UltraCrete QC10: Rapid Strength Concrete
About the product
UltraCrete QC10 is a rapid strength, fast set concrete designed for thick section repairs, haunching reinstatements, ironwork backfilling & commercial sign and post installation. Sets in 10–20 minutes and open to traffic in just 2 hours.
UltraCrete QC10: Rapid Strength Concrete available in a 25kg bag
Got a question about QC10? Download the technical datasheet (pdf) or see our comprehensive FAQs. Otherwise get in touch and we'll get back to you by email or phone as soon as we can. Or alternatively, call ☎️ 0330 122 1025 – we’re a small team, but happy to help. 😊✨
Calculate required quantity
UltraCrete QC10: Rapid Strength Concrete
See full delivery info →
For Highlands, Guernsey, Jersey, Isle of Man, and Isle of Wight – call 0330 122 1025.
See full delivery info →
For Highlands, Guernsey, Jersey, Isle of Man, and Isle of Wight – call 0330 122 1025.
How much you will need?
Technical information
- Workability: 5 – 10 minutes
- Set time: 10 – 20 minutes
- Depth: 30mm – 250mm
- 20N/mm² compressive strength in 2 hours
- Size: 25kg bag
- Cleaning: QC10 should be removed from tools and equipment with clean water immediately after use. Cured material can also be removed mechanically.
- Storage: Store in closed original packaging at temperatures between 5°C and 30°C. Avoid frost.
- Shelf life: 8 months from date of manufacture in sealed packaging. High temperatures and high humidity will reduce shelf life. The use of this product after the declared storage period may increase the risk of an allergic reaction.
How to prepare surfaces for QC10
All surfaces should be free from oil, grease, dust or any other visible contaminants before application.- Remove all loose particles and work on a sound substrate.
- Pre-soak the area with clean water prior to application to aid bond.
- Remove ponded water before applying the product).
How to mix QC10 Rapid Strength Concrete
- QC10 can be mixed mechanically or by hand.
- If by hand, ensure that the mixing is vigorous.
- Mix the inner bag containing the cement with the sand/aggregate.
- Add approximately 1 litre of water and mix thoroughly.
- Then, if required, add sufficient additional water until the required consistency is achieved to a maximum of 2 litres.
How to apply QC10 Rapid Strength Concrete
In conjunction with the HAPAS Approved UltraCrete Manhole Reinstatement System:- QC10 should be applied with a float 40mm below the required surface, then compacted to ensure no voids are evident. The final surface should be rough floated to achieve a level surface.
- Once the material has reached an initial set all vertical edges of the reinstatement, including the ironwork, should be sprayed with UltraCrete SCJ. This will prevent the ingress of water into the reinstatement.
- Ensure all vertical substrates are fully covered.
- Apply material over pre-soaked area within 4 minutes of mixing.
- Firm well into position by tamping or using a float.
- Clean any mixing equipment with water immediately after use.
About the product
UltraCrete QC10 is a rapid strength, fast set concrete designed for thick section repairs, haunching reinstatements, ironwork backfilling & commercial sign and post installation. Sets in 10–20 minutes and open to traffic in just 2 hours.
UltraCrete QC10: Rapid Strength Concrete available in a 25kg bag
Got a question about QC10? Download the technical datasheet (pdf) or see our comprehensive FAQs. Otherwise get in touch and we'll get back to you by email or phone as soon as we can. Or alternatively, call ☎️ 0330 122 1025 – we’re a small team, but happy to help. 😊✨
UltraCrete QC10: Rapid Strength Concrete
UltraCrete QC10 is one of the best rapid strength concretes on the market — an excellent example of a rapid set concrete that genuinely delivers where it counts. It's a product our customers consistently come back to tell us they're delighted with: fast workability, proven strength in hours, and a dependable HAPAS approval that's been in place since 2005.
Achieving 20N/mm² compressive strength in just 2 hours, suitable for thick section concrete repairs from 30mm to 250mm in a single pass, with a rapid set time of 10–20 minutes and open to traffic in 2 hours — QC10 is a professional-strength rapid setting concrete equally at home on manhole reinstatement, ironwork backfilling, haunching reinstatement, or commercial sign and post installation.
We're a small, family-run business — I'm Cleo, the owner, with over 25 years in the construction industry working with businesses including Tarmac and Instarmac. I work alongside a team of incredibly knowledgeable and caring individuals, and between us we've seen a lot of rapid set concretes come and go.
For manhole reinstatement concrete, ironwork backfill, haunching reinstatement concrete, highway repair, and rapid concrete for sign and post installation, QC10 is our go-to recommendation — simple to mix on site, fast to set, and trusted on everything from rapid concrete for road reinstatement to access frame backfill and barrier installation. For flowable applications, see QC10 F.
Who Uses UltraCrete QC10?
Highways Contractors & Local Authorities
QC10 is a staple for highways contractors and local authority works teams carrying out manhole reinstatements, haunching works and ironwork backfilling on roads and footways. HAPAS approved since 2005 and compliant with the UltraCrete Accredited Reinstatement Specification (UCARS), it gives inspectors and specifiers the confidence that reinstatements will perform.
Utilities & Telecoms Subcontractors
Gas, water, electricity and telecommunications contractors are among the biggest users of QC10. For utilities and telecoms subcontractors reinstating roads, footways and carriageways following duct and cable infrastructure installation, QC10 provides the rapid strength gain and early trafficking essential when working to tight reinstatement windows. Whether you’re carrying out fibre civils, telecoms reinstatement, duct installation or utility repair works, QC10 delivers the speed and strength performance required to keep sites compliant and open.
Facilities & Maintenance Contractors
Maintenance contractors working across retail parks, supermarkets, logistics sites and industrial estates use QC10 for rapid backfilling around ironwork, haunching and post installation where speed and minimal disruption are critical. It mixes on site with water only and is open to traffic in two hours.
Specialist Installation & Groundworks Contractors
QC10 is widely used by specialist groundworks and installation contractors who need to excavate through existing driveways, roads, car parks and paved surfaces to install power, controls, drainage or ducting — and then reinstate quickly. This includes:
- Electric gate and access-control installers — installation of electric gates and access systems can involve cutting into existing driveways, access roads and paved areas for power cables, control wiring, ducts and drainage. QC10 provides rapid backfill strength for post and frame foundations following surface reinstatement.
- EV charging contractors — groundworks for EV charging points frequently require trenches and cable routes across car parks, driveways and other paved areas. QC10 provides a fast-set backfill where foundations and duct housings require concrete support.
- Street lighting and electrical contractors — installation and maintenance of lighting columns, power supplies and underground cabling requires excavations in roads and footways. QC10 is suitable for backfilling around column bases and haunching.
- Security, CCTV and ANPR contractors — external CCTV, ANPR cameras, barriers and security systems require underground power and data cabling with associated surface excavations. QC10 provides rapid concrete backfill for equipment bases and duct routes.
- Barrier, bollard and automatic-door installers — traffic barriers, rising bollards and access-control equipment require concrete foundations and electrical connections. QC10 delivers the rapid strength gain needed to commission equipment quickly.
- Solar and renewable-energy contractors — larger commercial solar installations involve underground cable routes and electrical infrastructure across existing paved areas. QC10 is suitable for backfilling around cable ducts and equipment bases.
- Drainage and water contractors — drainage repairs, connections and service installations frequently involve cutting into roads, footways, driveways and car parks. QC10 provides rapid backfill concrete for drainage structures and reinstatements.
Homeowners & Private Road Users
QC10 is also suitable for domestic applications including backfilling around gate posts, fence posts and sign installations on driveways, shared access roads and private estate roads. If you’re unsure whether QC10 is the right product for your application, contact us or call 0330 122 1025 — we’re always happy to help.
Features & Benefits
- HAPAS approved since 2005 (BBA/HAPAS)
- 20N/mm² compressive strength in 2 hours
- Rapid set: 10–20 minutes
- Open to traffic in 2 hours
- Shrinkage compensated
- Contains special cements and graded aggregate
- Simply add water on site to form a high-strength concrete
- Suitable for applications from 30mm – 250mm in one pass
- Can be bulked out in certain applications (may affect performance)
- Approved for use on the London Underground and Overground
- NBS Source registered for ease of specification
- UltraCrete Accredited Reinstatement Specification (UCARS) product
Applications
QC10 rapid strength concrete is ideal for:
- Manhole reinstatement and access cover backfill
- Ironwork backfilling and access frame backfill
- Haunching reinstatement concrete
- Thick section concrete repair (30–250mm)
- Highway reinstatement concrete and road repair
- Rapid concrete for sign, post, fence and barrier installation
- EV charging point foundations and bollard installation
- Electric gate and access-control post foundations
- Utility and telecoms reinstatement following duct installation
- Drainage structure backfill and haunching
UltraCrete Approved Manhole Reinstatement System
QC10 is part of the UltraCrete Approved Manhole Reinstatement System — a complete range of HAPAS-approved products for roads, footways and carriageways. The full system includes:
| Product | Use |
|---|---|
| UltraCrete M45 | Rapid strength bedding mortar |
| UltraCrete M60 | Rapid strength bedding mortar |
| UltraCrete M60 F | Fibre-reinforced bedding mortar |
| UltraCrete M90 | High strength bedding mortar |
| UltraCrete QC10 | Rapid strength concrete (this product) |
| UltraCrete QC10 F | Rapid set flowable concrete |
| UltraCrete SCJ Seal & Tack Coat | Seal & tack coat for reinstatement edges |
| UltraCrete IRR 6mm | Instant road repair — 6mm aggregate |
| UltraCrete IRR 10mm | Instant road repair — 10mm aggregate |
| UltraCrete Tough Patch Rapid | Rapid surface repair |
| UltraCrete Enviro Mastic | Joint sealant |
| Instaband ECO | Thermoplastic overbanding tape |
Frequently Asked Questions about UltraCrete QC10
I'm Cleo, owner of The Paving Experts, with over 25 years in the construction industry working with businesses including Tarmac and Instarmac. I work alongside a small team of incredibly knowledgeable and caring individuals who share the same passion for getting it right. The FAQ answers below come from the questions we're asked every single day.
What is UltraCrete QC10?
UltraCrete QC10 is a rapid strength concrete designed for thick-section repairs, haunching reinstatements, ironwork backfilling and commercial sign and post installation. It is supplied in 25kg bags and requires only the addition of water on site.
What is QC10 rapid strength concrete used for?
QC10 is used for thick-section concrete repairs, haunching reinstatements, backfilling around highway ironwork and installing commercial signs, posts, fences and barriers. It is suitable for applications between 30mm and 250mm deep in one pass.
How quickly does UltraCrete QC10 set?
QC10 has a set time of approximately 10–20 minutes, depending on site conditions. Its workability is approximately 5–10 minutes, so the material should be mixed and placed promptly.
How long before QC10 can be trafficked?
UltraCrete QC10 can be opened to traffic after approximately two hours. It achieves a compressive strength of 20N/mm² in two hours.
Can QC10 be used for manhole reinstatement?
Yes. QC10 can be used as the backfill concrete within an UltraCrete ironwork/manhole reinstatement system. It is designed for backfilling around ironwork and access frames as part of the reinstatement process.
Can QC10 be used for backfilling around ironwork?
Yes. Ironwork backfilling is one of the principal applications for QC10. It provides rapid strength gain, allowing reinstatement work to progress quickly while providing the required support around the ironwork.
What depth can UltraCrete QC10 be applied at?
QC10 is suitable for applications from 30mm to 250mm in one pass.
What strength does QC10 achieve?
UltraCrete QC10 achieves a compressive strength of 20N/mm² after two hours.
Can QC10 be used for haunching?
Yes. QC10 is specifically designed for haunching reinstatements, making it suitable where a rapid-strength concrete is required around highway ironwork and other structures.
Can QC10 be used for posts, signs and barriers?
Yes. QC10 can be used for commercial sign and post installation, fencing and barrier erection. Instarmac also highlights its use where rapid strength gain is required for heavyweight fencing and signs.
How do you mix UltraCrete QC10?
QC10 can be mixed by hand or mechanically. The cement is mixed with the required sand/aggregate and approximately one litre of water initially, with additional water added gradually if required. It is important not to over-water the product, as excessive water can slow strength gain and reduce compressive strength.
How much water does QC10 need?
The initial mixing guidance is approximately one litre of water, with additional water added gradually if required to achieve the correct consistency. The exact requirement can vary depending on the moisture content of the aggregate. QC10 should not be over-watered.
Can QC10 be used for thick-section concrete repairs?
Yes. Thick-section concrete repair is one of the intended applications for QC10, alongside haunching, ironwork backfilling and post/sign installation. It can be applied from 30mm to 250mm in one pass.
What is the difference between QC10 and QC10 F?
QC10 is a rapid strength concrete for thick-section repairs, haunching, ironwork backfilling and post/sign installation, while QC10 F is a rapid-set, fibre-modified flowable concrete primarily designed for backfilling around manhole frames and gullies. QC10 F can be opened to traffic in approximately 90 minutes, compared with two hours for QC10.
What is the difference between QC10 and Post Fix?
Both are rapid-strength concretes, but QC10 has a higher strength gain than UltraCrete Post Fix and is therefore more suitable for backfilling around ironwork. Instarmac also identifies QC10 as suitable for heavyweight fencing and sign installation.
For technical support, specification help, or bulk pricing, contact our team or call 0330 122 1025 — we’re a small, family-run business and always happy to help.
- Brand: Instarmac
- SKU: TPE-ULTQC10BAG
- Weight: 25.0 kg / 55.12 lb
Delivery & Returns Info
Our delivery charges are calculated based on the size and weight of your order. When you add items to your basket, the delivery charges are displayed. Small orders are distributed via courier; larger orders via Pallet Network. Collection is available from our Tamworth depot by request (contact us first to arrange on 0330 122 1025).
Please note, there is a slight surcharge for areas that are outside of our locality, charges calculated at checkout.
| Weight and size | Next Working Day* Order before 1PM (excl. VAT) |
Standard 3-5 Working Day (excl. VAT) |
|---|---|---|
| 0-13KG (1 small bag/tub) |
£14.00 | £9.00 |
| 13.01-25KG (1 large bag/tub) |
£16.00 | £10.00 |
| 25.01-50KG (2 bags/tubs) |
£26.00 | £19.00 |
| 50.01-75KG (3 bags/tubs) |
£36.00 | £28.00 |
| 75.01-100KG (4-5 bags/tubs) |
£46.00 | £37.00 |
| 100.01-249KG (6-9 bags/tubs) |
£60.00 | £45.00 |
| 249.01-750KG (10 bags plus) |
£68.00 | £48.00 |
| 750.01KG plus (30 bags plus) |
£75.00 | £55.00 |
| Full Pallets (56 bags/52 tubs) |
£88.00 | Free of charge |
| Next Working Day delivery (Premium 1-2 Working Day Service) | +avg. £5-10 Extra. Click here for prices |
|---|---|
| Scotland Delivery Service (Deliveries into some parts of Scotland can take 8-10 working days) | Click here for prices |
| Local Delivery & Click & Collect: | Email: orders@thepavingexperts.co.uk |
Delivery Information
- Prices apply to mainland England and Wales. Scottish delivery slight surcharge.
- Orders are packed and dispatched Monday–Friday (excluding weekends & public holidays).
Next Working Day Delivery
- Order before 1PM → same-day dispatch.
- Order after 1PM or on weekends/bank holidays → next working day dispatch.
- You'll receive tracking updates via email/SMS if you provide your details.
Delivery Examples
- Mon before 1PM → Packed Mon, delivered Tue.
- Mon after 1PM → Packed Tues delivered Wed.
- Fri before 1PM → Packed Fri, delivered Mon.
- Fri after 1PM/weekend → Packed Mon, delivered Tues (or Wed after a bank holiday).
- Standard Service: 3–5 working days.
Notes
- Occasional delays due to manufacturing, supply, or courier issues may happen, but we'll keep you informed.
Returns, cancel up to 14 days from date of delivery. Product to be returned in the same condition & packaging. No returns for cementitious & perishable products. You are responsible for the cost of returning goods to The Paving Experts, 20% admin restock fee applies. Need further info, click here.
For further detailed delivery information click here →
For any advice; technical, product, stock or quantity needed, call our team on 0330 122 1025.
Please see our FAQs for more information.
UltraCrete QC10: Rapid Strength Concrete
UltraCrete QC10 is one of the best rapid strength concretes on the market — an excellent example of a rapid set concrete that genuinely delivers where it counts. It's a product our customers consistently come back to tell us they're delighted with: fast workability, proven strength in hours, and a dependable HAPAS approval that's been in place since 2005.
Achieving 20N/mm² compressive strength in just 2 hours, suitable for thick section concrete repairs from 30mm to 250mm in a single pass, with a rapid set time of 10–20 minutes and open to traffic in 2 hours — QC10 is a professional-strength rapid setting concrete equally at home on manhole reinstatement, ironwork backfilling, haunching reinstatement, or commercial sign and post installation.
We're a small, family-run business — I'm Cleo, the owner, with over 25 years in the construction industry working with businesses including Tarmac and Instarmac. I work alongside a team of incredibly knowledgeable and caring individuals, and between us we've seen a lot of rapid set concretes come and go.
For manhole reinstatement concrete, ironwork backfill, haunching reinstatement concrete, highway repair, and rapid concrete for sign and post installation, QC10 is our go-to recommendation — simple to mix on site, fast to set, and trusted on everything from rapid concrete for road reinstatement to access frame backfill and barrier installation. For flowable applications, see QC10 F.
Who Uses UltraCrete QC10?
Highways Contractors & Local Authorities
QC10 is a staple for highways contractors and local authority works teams carrying out manhole reinstatements, haunching works and ironwork backfilling on roads and footways. HAPAS approved since 2005 and compliant with the UltraCrete Accredited Reinstatement Specification (UCARS), it gives inspectors and specifiers the confidence that reinstatements will perform.
Utilities & Telecoms Subcontractors
Gas, water, electricity and telecommunications contractors are among the biggest users of QC10. For utilities and telecoms subcontractors reinstating roads, footways and carriageways following duct and cable infrastructure installation, QC10 provides the rapid strength gain and early trafficking essential when working to tight reinstatement windows. Whether you’re carrying out fibre civils, telecoms reinstatement, duct installation or utility repair works, QC10 delivers the speed and strength performance required to keep sites compliant and open.
Facilities & Maintenance Contractors
Maintenance contractors working across retail parks, supermarkets, logistics sites and industrial estates use QC10 for rapid backfilling around ironwork, haunching and post installation where speed and minimal disruption are critical. It mixes on site with water only and is open to traffic in two hours.
Specialist Installation & Groundworks Contractors
QC10 is widely used by specialist groundworks and installation contractors who need to excavate through existing driveways, roads, car parks and paved surfaces to install power, controls, drainage or ducting — and then reinstate quickly. This includes:
- Electric gate and access-control installers — installation of electric gates and access systems can involve cutting into existing driveways, access roads and paved areas for power cables, control wiring, ducts and drainage. QC10 provides rapid backfill strength for post and frame foundations following surface reinstatement.
- EV charging contractors — groundworks for EV charging points frequently require trenches and cable routes across car parks, driveways and other paved areas. QC10 provides a fast-set backfill where foundations and duct housings require concrete support.
- Street lighting and electrical contractors — installation and maintenance of lighting columns, power supplies and underground cabling requires excavations in roads and footways. QC10 is suitable for backfilling around column bases and haunching.
- Security, CCTV and ANPR contractors — external CCTV, ANPR cameras, barriers and security systems require underground power and data cabling with associated surface excavations. QC10 provides rapid concrete backfill for equipment bases and duct routes.
- Barrier, bollard and automatic-door installers — traffic barriers, rising bollards and access-control equipment require concrete foundations and electrical connections. QC10 delivers the rapid strength gain needed to commission equipment quickly.
- Solar and renewable-energy contractors — larger commercial solar installations involve underground cable routes and electrical infrastructure across existing paved areas. QC10 is suitable for backfilling around cable ducts and equipment bases.
- Drainage and water contractors — drainage repairs, connections and service installations frequently involve cutting into roads, footways, driveways and car parks. QC10 provides rapid backfill concrete for drainage structures and reinstatements.
Homeowners & Private Road Users
QC10 is also suitable for domestic applications including backfilling around gate posts, fence posts and sign installations on driveways, shared access roads and private estate roads. If you’re unsure whether QC10 is the right product for your application, contact us or call 0330 122 1025 — we’re always happy to help.
Features & Benefits
- HAPAS approved since 2005 (BBA/HAPAS)
- 20N/mm² compressive strength in 2 hours
- Rapid set: 10–20 minutes
- Open to traffic in 2 hours
- Shrinkage compensated
- Contains special cements and graded aggregate
- Simply add water on site to form a high-strength concrete
- Suitable for applications from 30mm – 250mm in one pass
- Can be bulked out in certain applications (may affect performance)
- Approved for use on the London Underground and Overground
- NBS Source registered for ease of specification
- UltraCrete Accredited Reinstatement Specification (UCARS) product
Applications
QC10 rapid strength concrete is ideal for:
- Manhole reinstatement and access cover backfill
- Ironwork backfilling and access frame backfill
- Haunching reinstatement concrete
- Thick section concrete repair (30–250mm)
- Highway reinstatement concrete and road repair
- Rapid concrete for sign, post, fence and barrier installation
- EV charging point foundations and bollard installation
- Electric gate and access-control post foundations
- Utility and telecoms reinstatement following duct installation
- Drainage structure backfill and haunching
UltraCrete Approved Manhole Reinstatement System
QC10 is part of the UltraCrete Approved Manhole Reinstatement System — a complete range of HAPAS-approved products for roads, footways and carriageways. The full system includes:
| Product | Use |
|---|---|
| UltraCrete M45 | Rapid strength bedding mortar |
| UltraCrete M60 | Rapid strength bedding mortar |
| UltraCrete M60 F | Fibre-reinforced bedding mortar |
| UltraCrete M90 | High strength bedding mortar |
| UltraCrete QC10 | Rapid strength concrete (this product) |
| UltraCrete QC10 F | Rapid set flowable concrete |
| UltraCrete SCJ Seal & Tack Coat | Seal & tack coat for reinstatement edges |
| UltraCrete IRR 6mm | Instant road repair — 6mm aggregate |
| UltraCrete IRR 10mm | Instant road repair — 10mm aggregate |
| UltraCrete Tough Patch Rapid | Rapid surface repair |
| UltraCrete Enviro Mastic | Joint sealant |
| Instaband ECO | Thermoplastic overbanding tape |
Frequently Asked Questions about UltraCrete QC10
I'm Cleo, owner of The Paving Experts, with over 25 years in the construction industry working with businesses including Tarmac and Instarmac. I work alongside a small team of incredibly knowledgeable and caring individuals who share the same passion for getting it right. The FAQ answers below come from the questions we're asked every single day.
What is UltraCrete QC10?
UltraCrete QC10 is a rapid strength concrete designed for thick-section repairs, haunching reinstatements, ironwork backfilling and commercial sign and post installation. It is supplied in 25kg bags and requires only the addition of water on site.
What is QC10 rapid strength concrete used for?
QC10 is used for thick-section concrete repairs, haunching reinstatements, backfilling around highway ironwork and installing commercial signs, posts, fences and barriers. It is suitable for applications between 30mm and 250mm deep in one pass.
How quickly does UltraCrete QC10 set?
QC10 has a set time of approximately 10–20 minutes, depending on site conditions. Its workability is approximately 5–10 minutes, so the material should be mixed and placed promptly.
How long before QC10 can be trafficked?
UltraCrete QC10 can be opened to traffic after approximately two hours. It achieves a compressive strength of 20N/mm² in two hours.
Can QC10 be used for manhole reinstatement?
Yes. QC10 can be used as the backfill concrete within an UltraCrete ironwork/manhole reinstatement system. It is designed for backfilling around ironwork and access frames as part of the reinstatement process.
Can QC10 be used for backfilling around ironwork?
Yes. Ironwork backfilling is one of the principal applications for QC10. It provides rapid strength gain, allowing reinstatement work to progress quickly while providing the required support around the ironwork.
What depth can UltraCrete QC10 be applied at?
QC10 is suitable for applications from 30mm to 250mm in one pass.
What strength does QC10 achieve?
UltraCrete QC10 achieves a compressive strength of 20N/mm² after two hours.
Can QC10 be used for haunching?
Yes. QC10 is specifically designed for haunching reinstatements, making it suitable where a rapid-strength concrete is required around highway ironwork and other structures.
Can QC10 be used for posts, signs and barriers?
Yes. QC10 can be used for commercial sign and post installation, fencing and barrier erection. Instarmac also highlights its use where rapid strength gain is required for heavyweight fencing and signs.
How do you mix UltraCrete QC10?
QC10 can be mixed by hand or mechanically. The cement is mixed with the required sand/aggregate and approximately one litre of water initially, with additional water added gradually if required. It is important not to over-water the product, as excessive water can slow strength gain and reduce compressive strength.
How much water does QC10 need?
The initial mixing guidance is approximately one litre of water, with additional water added gradually if required to achieve the correct consistency. The exact requirement can vary depending on the moisture content of the aggregate. QC10 should not be over-watered.
Can QC10 be used for thick-section concrete repairs?
Yes. Thick-section concrete repair is one of the intended applications for QC10, alongside haunching, ironwork backfilling and post/sign installation. It can be applied from 30mm to 250mm in one pass.
What is the difference between QC10 and QC10 F?
QC10 is a rapid strength concrete for thick-section repairs, haunching, ironwork backfilling and post/sign installation, while QC10 F is a rapid-set, fibre-modified flowable concrete primarily designed for backfilling around manhole frames and gullies. QC10 F can be opened to traffic in approximately 90 minutes, compared with two hours for QC10.
What is the difference between QC10 and Post Fix?
Both are rapid-strength concretes, but QC10 has a higher strength gain than UltraCrete Post Fix and is therefore more suitable for backfilling around ironwork. Instarmac also identifies QC10 as suitable for heavyweight fencing and sign installation.
For technical support, specification help, or bulk pricing, contact our team or call 0330 122 1025 — we’re a small, family-run business and always happy to help.
Technical information
- Workability: 5 – 10 minutes
- Set time: 10 – 20 minutes
- Depth: 30mm – 250mm
- 20N/mm² compressive strength in 2 hours
- Size: 25kg bag
- Cleaning: QC10 should be removed from tools and equipment with clean water immediately after use. Cured material can also be removed mechanically.
- Storage: Store in closed original packaging at temperatures between 5°C and 30°C. Avoid frost.
- Shelf life: 8 months from date of manufacture in sealed packaging. High temperatures and high humidity will reduce shelf life. The use of this product after the declared storage period may increase the risk of an allergic reaction.
How to prepare surfaces for QC10
All surfaces should be free from oil, grease, dust or any other visible contaminants before application.- Remove all loose particles and work on a sound substrate.
- Pre-soak the area with clean water prior to application to aid bond.
- Remove ponded water before applying the product).
How to mix QC10 Rapid Strength Concrete
- QC10 can be mixed mechanically or by hand.
- If by hand, ensure that the mixing is vigorous.
- Mix the inner bag containing the cement with the sand/aggregate.
- Add approximately 1 litre of water and mix thoroughly.
- Then, if required, add sufficient additional water until the required consistency is achieved to a maximum of 2 litres.
How to apply QC10 Rapid Strength Concrete
In conjunction with the HAPAS Approved UltraCrete Manhole Reinstatement System:- QC10 should be applied with a float 40mm below the required surface, then compacted to ensure no voids are evident. The final surface should be rough floated to achieve a level surface.
- Once the material has reached an initial set all vertical edges of the reinstatement, including the ironwork, should be sprayed with UltraCrete SCJ. This will prevent the ingress of water into the reinstatement.
- Ensure all vertical substrates are fully covered.
- Apply material over pre-soaked area within 4 minutes of mixing.
- Firm well into position by tamping or using a float.
- Clean any mixing equipment with water immediately after use.
Delivery & Returns Info
Our delivery charges are calculated based on the size and weight of your order. When you add items to your basket, the delivery charges are displayed. Small orders are distributed via courier; larger orders via Pallet Network. Collection is available from our Tamworth depot by request (contact us first to arrange on 0330 122 1025).
Please note, there is a slight surcharge for areas that are outside of our locality, charges calculated at checkout.
| Weight and size | Next Working Day* Order before 1PM (excl. VAT) |
Standard 3-5 Working Day (excl. VAT) |
|---|---|---|
| 0-13KG (1 small bag/tub) |
£14.00 | £9.00 |
| 13.01-25KG (1 large bag/tub) |
£16.00 | £10.00 |
| 25.01-50KG (2 bags/tubs) |
£26.00 | £19.00 |
| 50.01-75KG (3 bags/tubs) |
£36.00 | £28.00 |
| 75.01-100KG (4-5 bags/tubs) |
£46.00 | £37.00 |
| 100.01-249KG (6-9 bags/tubs) |
£60.00 | £45.00 |
| 249.01-750KG (10 bags plus) |
£68.00 | £48.00 |
| 750.01KG plus (30 bags plus) |
£75.00 | £55.00 |
| Full Pallets (56 bags/52 tubs) |
£88.00 | Free of charge |
| Next Working Day delivery (Premium 1-2 Working Day Service) | +avg. £5-10 Extra. Click here for prices |
|---|---|
| Scotland Delivery Service (Deliveries into some parts of Scotland can take 8-10 working days) | Click here for prices |
| Local Delivery & Click & Collect: | Email: orders@thepavingexperts.co.uk |
Delivery Information
- Prices apply to mainland England and Wales. Scottish delivery slight surcharge.
- Orders are packed and dispatched Monday–Friday (excluding weekends & public holidays).
Next Working Day Delivery
- Order before 1PM → same-day dispatch.
- Order after 1PM or on weekends/bank holidays → next working day dispatch.
- You'll receive tracking updates via email/SMS if you provide your details.
Delivery Examples
- Mon before 1PM → Packed Mon, delivered Tue.
- Mon after 1PM → Packed Tues delivered Wed.
- Fri before 1PM → Packed Fri, delivered Mon.
- Fri after 1PM/weekend → Packed Mon, delivered Tues (or Wed after a bank holiday).
- Standard Service: 3–5 working days.
Notes
- Occasional delays due to manufacturing, supply, or courier issues may happen, but we'll keep you informed.
Returns, cancel up to 14 days from date of delivery. Product to be returned in the same condition & packaging. No returns for cementitious & perishable products. You are responsible for the cost of returning goods to The Paving Experts, 20% admin restock fee applies. Need further info, click here.
For further detailed delivery information click here →
UltraCrete QC10: Rapid Strength Concrete
UltraCrete QC10 is one of the best rapid strength concretes on the market — an excellent example of a rapid set concrete that genuinely delivers where it counts. It's a product our customers consistently come back to tell us they're delighted with: fast workability, proven strength in hours, and a dependable HAPAS approval that's been in place since 2005.
Achieving 20N/mm² compressive strength in just 2 hours, suitable for thick section concrete repairs from 30mm to 250mm in a single pass, with a rapid set time of 10–20 minutes and open to traffic in 2 hours — QC10 is a professional-strength rapid setting concrete equally at home on manhole reinstatement, ironwork backfilling, haunching reinstatement, or commercial sign and post installation.
We're a small, family-run business — I'm Cleo, the owner, with over 25 years in the construction industry working with businesses including Tarmac and Instarmac. I work alongside a team of incredibly knowledgeable and caring individuals, and between us we've seen a lot of rapid set concretes come and go.
For manhole reinstatement concrete, ironwork backfill, haunching reinstatement concrete, highway repair, and rapid concrete for sign and post installation, QC10 is our go-to recommendation — simple to mix on site, fast to set, and trusted on everything from rapid concrete for road reinstatement to access frame backfill and barrier installation. For flowable applications, see QC10 F.
Who Uses UltraCrete QC10?
Highways Contractors & Local Authorities
QC10 is a staple for highways contractors and local authority works teams carrying out manhole reinstatements, haunching works and ironwork backfilling on roads and footways. HAPAS approved since 2005 and compliant with the UltraCrete Accredited Reinstatement Specification (UCARS), it gives inspectors and specifiers the confidence that reinstatements will perform.
Utilities & Telecoms Subcontractors
Gas, water, electricity and telecommunications contractors are among the biggest users of QC10. For utilities and telecoms subcontractors reinstating roads, footways and carriageways following duct and cable infrastructure installation, QC10 provides the rapid strength gain and early trafficking essential when working to tight reinstatement windows. Whether you’re carrying out fibre civils, telecoms reinstatement, duct installation or utility repair works, QC10 delivers the speed and strength performance required to keep sites compliant and open.
Facilities & Maintenance Contractors
Maintenance contractors working across retail parks, supermarkets, logistics sites and industrial estates use QC10 for rapid backfilling around ironwork, haunching and post installation where speed and minimal disruption are critical. It mixes on site with water only and is open to traffic in two hours.
Specialist Installation & Groundworks Contractors
QC10 is widely used by specialist groundworks and installation contractors who need to excavate through existing driveways, roads, car parks and paved surfaces to install power, controls, drainage or ducting — and then reinstate quickly. This includes:
- Electric gate and access-control installers — installation of electric gates and access systems can involve cutting into existing driveways, access roads and paved areas for power cables, control wiring, ducts and drainage. QC10 provides rapid backfill strength for post and frame foundations following surface reinstatement.
- EV charging contractors — groundworks for EV charging points frequently require trenches and cable routes across car parks, driveways and other paved areas. QC10 provides a fast-set backfill where foundations and duct housings require concrete support.
- Street lighting and electrical contractors — installation and maintenance of lighting columns, power supplies and underground cabling requires excavations in roads and footways. QC10 is suitable for backfilling around column bases and haunching.
- Security, CCTV and ANPR contractors — external CCTV, ANPR cameras, barriers and security systems require underground power and data cabling with associated surface excavations. QC10 provides rapid concrete backfill for equipment bases and duct routes.
- Barrier, bollard and automatic-door installers — traffic barriers, rising bollards and access-control equipment require concrete foundations and electrical connections. QC10 delivers the rapid strength gain needed to commission equipment quickly.
- Solar and renewable-energy contractors — larger commercial solar installations involve underground cable routes and electrical infrastructure across existing paved areas. QC10 is suitable for backfilling around cable ducts and equipment bases.
- Drainage and water contractors — drainage repairs, connections and service installations frequently involve cutting into roads, footways, driveways and car parks. QC10 provides rapid backfill concrete for drainage structures and reinstatements.
Homeowners & Private Road Users
QC10 is also suitable for domestic applications including backfilling around gate posts, fence posts and sign installations on driveways, shared access roads and private estate roads. If you’re unsure whether QC10 is the right product for your application, contact us or call 0330 122 1025 — we’re always happy to help.
Features & Benefits
- HAPAS approved since 2005 (BBA/HAPAS)
- 20N/mm² compressive strength in 2 hours
- Rapid set: 10–20 minutes
- Open to traffic in 2 hours
- Shrinkage compensated
- Contains special cements and graded aggregate
- Simply add water on site to form a high-strength concrete
- Suitable for applications from 30mm – 250mm in one pass
- Can be bulked out in certain applications (may affect performance)
- Approved for use on the London Underground and Overground
- NBS Source registered for ease of specification
- UltraCrete Accredited Reinstatement Specification (UCARS) product
Applications
QC10 rapid strength concrete is ideal for:
- Manhole reinstatement and access cover backfill
- Ironwork backfilling and access frame backfill
- Haunching reinstatement concrete
- Thick section concrete repair (30–250mm)
- Highway reinstatement concrete and road repair
- Rapid concrete for sign, post, fence and barrier installation
- EV charging point foundations and bollard installation
- Electric gate and access-control post foundations
- Utility and telecoms reinstatement following duct installation
- Drainage structure backfill and haunching
UltraCrete Approved Manhole Reinstatement System
QC10 is part of the UltraCrete Approved Manhole Reinstatement System — a complete range of HAPAS-approved products for roads, footways and carriageways. The full system includes:
| Product | Use |
|---|---|
| UltraCrete M45 | Rapid strength bedding mortar |
| UltraCrete M60 | Rapid strength bedding mortar |
| UltraCrete M60 F | Fibre-reinforced bedding mortar |
| UltraCrete M90 | High strength bedding mortar |
| UltraCrete QC10 | Rapid strength concrete (this product) |
| UltraCrete QC10 F | Rapid set flowable concrete |
| UltraCrete SCJ Seal & Tack Coat | Seal & tack coat for reinstatement edges |
| UltraCrete IRR 6mm | Instant road repair — 6mm aggregate |
| UltraCrete IRR 10mm | Instant road repair — 10mm aggregate |
| UltraCrete Tough Patch Rapid | Rapid surface repair |
| UltraCrete Enviro Mastic | Joint sealant |
| Instaband ECO | Thermoplastic overbanding tape |
Frequently Asked Questions about UltraCrete QC10
I'm Cleo, owner of The Paving Experts, with over 25 years in the construction industry working with businesses including Tarmac and Instarmac. I work alongside a small team of incredibly knowledgeable and caring individuals who share the same passion for getting it right. The FAQ answers below come from the questions we're asked every single day.
What is UltraCrete QC10?
UltraCrete QC10 is a rapid strength concrete designed for thick-section repairs, haunching reinstatements, ironwork backfilling and commercial sign and post installation. It is supplied in 25kg bags and requires only the addition of water on site.
What is QC10 rapid strength concrete used for?
QC10 is used for thick-section concrete repairs, haunching reinstatements, backfilling around highway ironwork and installing commercial signs, posts, fences and barriers. It is suitable for applications between 30mm and 250mm deep in one pass.
How quickly does UltraCrete QC10 set?
QC10 has a set time of approximately 10–20 minutes, depending on site conditions. Its workability is approximately 5–10 minutes, so the material should be mixed and placed promptly.
How long before QC10 can be trafficked?
UltraCrete QC10 can be opened to traffic after approximately two hours. It achieves a compressive strength of 20N/mm² in two hours.
Can QC10 be used for manhole reinstatement?
Yes. QC10 can be used as the backfill concrete within an UltraCrete ironwork/manhole reinstatement system. It is designed for backfilling around ironwork and access frames as part of the reinstatement process.
Can QC10 be used for backfilling around ironwork?
Yes. Ironwork backfilling is one of the principal applications for QC10. It provides rapid strength gain, allowing reinstatement work to progress quickly while providing the required support around the ironwork.
What depth can UltraCrete QC10 be applied at?
QC10 is suitable for applications from 30mm to 250mm in one pass.
What strength does QC10 achieve?
UltraCrete QC10 achieves a compressive strength of 20N/mm² after two hours.
Can QC10 be used for haunching?
Yes. QC10 is specifically designed for haunching reinstatements, making it suitable where a rapid-strength concrete is required around highway ironwork and other structures.
Can QC10 be used for posts, signs and barriers?
Yes. QC10 can be used for commercial sign and post installation, fencing and barrier erection. Instarmac also highlights its use where rapid strength gain is required for heavyweight fencing and signs.
How do you mix UltraCrete QC10?
QC10 can be mixed by hand or mechanically. The cement is mixed with the required sand/aggregate and approximately one litre of water initially, with additional water added gradually if required. It is important not to over-water the product, as excessive water can slow strength gain and reduce compressive strength.
How much water does QC10 need?
The initial mixing guidance is approximately one litre of water, with additional water added gradually if required to achieve the correct consistency. The exact requirement can vary depending on the moisture content of the aggregate. QC10 should not be over-watered.
Can QC10 be used for thick-section concrete repairs?
Yes. Thick-section concrete repair is one of the intended applications for QC10, alongside haunching, ironwork backfilling and post/sign installation. It can be applied from 30mm to 250mm in one pass.
What is the difference between QC10 and QC10 F?
QC10 is a rapid strength concrete for thick-section repairs, haunching, ironwork backfilling and post/sign installation, while QC10 F is a rapid-set, fibre-modified flowable concrete primarily designed for backfilling around manhole frames and gullies. QC10 F can be opened to traffic in approximately 90 minutes, compared with two hours for QC10.
What is the difference between QC10 and Post Fix?
Both are rapid-strength concretes, but QC10 has a higher strength gain than UltraCrete Post Fix and is therefore more suitable for backfilling around ironwork. Instarmac also identifies QC10 as suitable for heavyweight fencing and sign installation.
For technical support, specification help, or bulk pricing, contact our team or call 0330 122 1025 — we’re a small, family-run business and always happy to help.
Technical information
- Workability: 5 – 10 minutes
- Set time: 10 – 20 minutes
- Depth: 30mm – 250mm
- 20N/mm² compressive strength in 2 hours
- Size: 25kg bag
- Cleaning: QC10 should be removed from tools and equipment with clean water immediately after use. Cured material can also be removed mechanically.
- Storage: Store in closed original packaging at temperatures between 5°C and 30°C. Avoid frost.
- Shelf life: 8 months from date of manufacture in sealed packaging. High temperatures and high humidity will reduce shelf life. The use of this product after the declared storage period may increase the risk of an allergic reaction.
Delivery & Returns Info
Our delivery charges are calculated based on the size and weight of your order. When you add items to your basket, the delivery charges are displayed. Small orders are distributed via courier; larger orders via Pallet Network. Collection is available from our Tamworth depot by request (contact us first to arrange on 0330 122 1025).
Please note, there is a slight surcharge for areas that are outside of our locality, charges calculated at checkout.
| Weight and size | Next Working Day* Order before 1PM (excl. VAT) |
Standard 3-5 Working Day (excl. VAT) |
|---|---|---|
| 0-13KG (1 small bag/tub) |
£14.00 | £9.00 |
| 13.01-25KG (1 large bag/tub) |
£16.00 | £10.00 |
| 25.01-50KG (2 bags/tubs) |
£26.00 | £19.00 |
| 50.01-75KG (3 bags/tubs) |
£36.00 | £28.00 |
| 75.01-100KG (4-5 bags/tubs) |
£46.00 | £37.00 |
| 100.01-249KG (6-9 bags/tubs) |
£60.00 | £45.00 |
| 249.01-750KG (10 bags plus) |
£68.00 | £48.00 |
| 750.01KG plus (30 bags plus) |
£75.00 | £55.00 |
| Full Pallets (56 bags/52 tubs) |
£88.00 | Free of charge |
| Next Working Day delivery (Premium 1-2 Working Day Service) | +avg. £5-10 Extra. Click here for prices |
|---|---|
| Scotland Delivery Service (Deliveries into some parts of Scotland can take 8-10 working days) | Click here for prices |
| Local Delivery & Click & Collect: | Email: orders@thepavingexperts.co.uk |
Delivery Information
- Prices apply to mainland England and Wales. Scottish delivery slight surcharge.
- Orders are packed and dispatched Monday–Friday (excluding weekends & public holidays).
Next Working Day Delivery
- Order before 1PM → same-day dispatch.
- Order after 1PM or on weekends/bank holidays → next working day dispatch.
- You'll receive tracking updates via email/SMS if you provide your details.
Delivery Examples
- Mon before 1PM → Packed Mon, delivered Tue.
- Mon after 1PM → Packed Tues delivered Wed.
- Fri before 1PM → Packed Fri, delivered Mon.
- Fri after 1PM/weekend → Packed Mon, delivered Tues (or Wed after a bank holiday).
- Standard Service: 3–5 working days.
Notes
- Occasional delays due to manufacturing, supply, or courier issues may happen, but we'll keep you informed.
Returns, cancel up to 14 days from date of delivery. Product to be returned in the same condition & packaging. No returns for cementitious & perishable products. You are responsible for the cost of returning goods to The Paving Experts, 20% admin restock fee applies. Need further info, click here.
For further detailed delivery information click here →
How to prepare surfaces for QC10
All surfaces should be free from oil, grease, dust or any other visible contaminants before application.- Remove all loose particles and work on a sound substrate.
- Pre-soak the area with clean water prior to application to aid bond.
- Remove ponded water before applying the product).
How to mix QC10 Rapid Strength Concrete
- QC10 can be mixed mechanically or by hand.
- If by hand, ensure that the mixing is vigorous.
- Mix the inner bag containing the cement with the sand/aggregate.
- Add approximately 1 litre of water and mix thoroughly.
- Then, if required, add sufficient additional water until the required consistency is achieved to a maximum of 2 litres.
How to apply QC10 Rapid Strength Concrete
In conjunction with the HAPAS Approved UltraCrete Manhole Reinstatement System:- QC10 should be applied with a float 40mm below the required surface, then compacted to ensure no voids are evident. The final surface should be rough floated to achieve a level surface.
- Once the material has reached an initial set all vertical edges of the reinstatement, including the ironwork, should be sprayed with UltraCrete SCJ. This will prevent the ingress of water into the reinstatement.
- Ensure all vertical substrates are fully covered.
- Apply material over pre-soaked area within 4 minutes of mixing.
- Firm well into position by tamping or using a float.
- Clean any mixing equipment with water immediately after use.