RAPID SET BACKFILL CONCRETE
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High Performance Rapid Setting Concrete for Fast Repairs
FP McCann’s Rapid Set Backfill Concrete is a premium blend of selected aggregates, cement, and additives designed for fast-setting, high-strength applications. Ideal for reinstating access covers, gullies, and thick section repairs, this product allows traffic after just two hours, ensuring minimal disruption and maximum efficiency.
Key Applications of Rapid Set Backfill Concrete
FP McCann Rapid Set Backfill Concrete is designed for fast, reliable reinstatement and repair work across a wide range of civil engineering and construction scenarios, including:
Access Cover Reinstatement
Perfect for quickly backfilling around manhole covers, inspection chambers and utility access points ensuring roads and pavements can reopen to traffic within hours.
Gulley & Drainage Repairs
Ideal for reinstating gullies and drainage systems where speed and durability are critical to prevent flooding and maintain integrity.
Thick Section Repairs
Suitable for repairing large voids or damaged concrete sections in highways, industrial floors and heavy duty surfaces.
Commercial Post Installation
Provides a strong, rapid setting base for securing posts, bollards, signage and street furniture in commercial and public spaces.
Emergency Road Repairs
When time is of the essence, Rapid Set Backfill Concrete allows for quick reinstatement of road surfaces minimizing traffic disruption.
Utility Trench Backfilling
Ensures fast and secure backfill for trenches after utility works reducing downtime and improving site safety.
Infrastructure Maintenance
Used in airports, railways and ports for urgent concrete repairs where operational continuity is essential.
Key Benefits of FP McCann Rapid Set Backfill Concrete
Choosing FP McCann Rapid Set Backfill Concrete offers multiple advantages for contractors, utility companies and infrastructure maintenance teams
Ultra Fast Setting Time
Open to traffic in as little as two hours, reducing downtime and improving project efficiency
High Early Strength
Achieves >20MPa compressive strength within 2 hours, ensuring immediate load bearing capability
Exceptional Long Term Durability
Reaches 50MPa at 28 days, providing a robust and reliable solution for heavy duty applications
Consistent Quality
Manufactured in a factory controlled environment, guaranteeing uniform performance and compliance with British and European standards
Ready to Use Convenience
Supplied in weather resistant, recyclable bags, making storage and handling simple and eco friendly.
Versatile Application Range
Suitable for layers from 20mm to 250mm, covering everything from small reinstatements to thick section repairs.
Chloride Free Formula
Safe for use around reinforcement and in sensitive environments, reducing corrosion risk.
Reduced Labour & Equipment Costs
Quick setting and easy mixing minimise time on site and eliminate the need for prolonged traffic management
Reliable Performance in Challenging Conditions
Designed to withstand exposure to drying winds and sunlight, ensuring a strong finish even in demanding environments.
How to Use FP McCann Rapid Set Backfill Concrete
Application Guidance
- When using this product, good site practice should always apply. FP McCann cannot be held responsible where workmanship has failed to meet the relevant European and British Standards.
- Cement based products will take longer to harden and set at lower temperatures, and should not be used below 5°C. Do not use in ground where frost is present.
- When site temperatures are below 10°C consider allowing extra time before opening to traffic, applying further loads etc.
- Exposure to drying winds and/or strong sunlight may result in rapid drying and cracking.
- All surfaces must be clean and free from all contamination. For best results, surfaces should be mechanically roughened.
- All surfaces should be saturated with clean water but free from standing water.
Mixing & Water Guidance
- FP McCann Rapid Set Backfill Concrete should be mixed using the correct amount of water by using a mechanical mixing method such as a slow speed drill and paddle.
- A 20kg bag of should be added carefully to between 2 and 3 litres of water depending on required workability. Typically, the addition of 2.5L of water per bag results in a slow flowing concrete.
- Mix product for a minimum of 3 minutes until a homogeneous consistency is achieved.
- Mixed material should be used within 5-10min of mixing. Mixed product will begin to set within 10-15min.
- Adding additional water or trying to revive a mix that has begun to go off will greatly reduce performance.
Application
- Immediately after mixing, trowel or pour the concrete into place over pre soaked substrate. This should be within 5min of mixing
- Gently tamp the concrete with a trowel or similar to ensure compaction.
- Exposed surfaces should be float finished, ensuring any voids are filled.
- When backfilling prior to resurfacing, it is generally recommended to finish the backfill not more than 40mm below the finished level and that a suitable tack coat is applied prior to the application of the surfacing material or FP McCann Easi Repair Permanent Cold Lay Surfacing Material.