Mastermix Rapid Repair
Fast-Setting, Long-Lasting Concrete Repair
Rapid Repair is a high-performance, fast-setting compound designed for concrete and masonry restoration. It sets in just 17 minutes, achieves early compressive strength, and provides a smooth, trowelable finish with excellent adhesion and water-repellent properties. With a design life exceeding 50 years, Rapid Repair delivers a durable, long-term solution where speed and strength matter.
Key features:
- Fast Setting: Sets in 17 minutes at 16°C
- Strength Development: 20 MPa in 2 hours, 36 MPa in 24 hours, 45 MPa in 28 days
- Versatile Applications: water treatment plants (fresh, grey, black water), water storage tanks and reservoirs,
domestic and industrial flooring, including rendering plants, manholes and concrete structure repairs - Depth Suitability: 10mm to 100mm (use reinforcement for >25mm)
- Durability: Design life >50 years
- Conforms to: NZ3112 (Compressive strength testing), NZS4210:2001 (Masonry construction standard)
HEALTH AND SAFETY
Rapid Repair is cement-based and free from aggressive additives.
Avoid excessive skin, eye contact, and swallowing.
Freshly mixed product may cause skin irritation.
Wear suitable clothing when using this product.
In the event of contact with skin or eyes, rinse thoroughly with water.
If swallowed drink plenty of water, do not induce vomiting, and seek medical advice.
MIXING AND APPLICATION
The area to be coated must be thoroughly clean and free from grease, oil and loose material; it can be damp, but not wet.
Mix 130mls of clean water to 1kg of Rapid Repair, mix thoroughly to an even consistency and apply with a trowel and float to the desired finish.Only mix the amount required to effect the repair and do not leave the product standing. Once the product has been placed and ‘finished off’ do not rework it as the effectiveness of the finished product may be compromised. Under normal ambient conditions it will set in 17 minutes, from mixing, and will be fully cured in 24 hours.
Rapid Repair is suitable for repairs 10mm to 100mm in depth and should be always placed in one layer.
Where depths exceed 25mm wire reinforcing should be used. If a ‘feather edge’ is required Multi-Cote should be used as a primer coat.
Disclaimer: Technical details and recommendations are based on our best knowledge and experience. The user must ensure suitability for the specific project before application, and is fully responsible for the product’s use and its consequences.
WARRANTY
Warranties may be offered, subject to project assessment and application by a MasterMix-approved applicator.
TECHNICAL DATA
| Compressive Strength | • 20 MPa in 2hrs • 36 MPa in 24 hours • 45 MPa in 28 days |
| Floor Load Capacity (max) | 40 MPa |
| Waterproof | Yes, from time of set |
| Set Time | 17minutes @ 16°C |
| Application Temperature | 7°C to 25°C |
| Shelf Life | 3 months (cool & dry storage) |
| Design Life | Tested and verified for 50+ years |
PAST PROJECT UTILISING RAPID REPAIR
