Bridge Expansion Joint Concrete Repair Products
There are many damages on bridge expansion joint concrete,
such as: cracks, potholes, broken,exposed reinforcing bar etc.
Detailed repair solution:
1: which kind repair material is best for expansion joint concrete broken?
Huineng brand QM type concrete repair material is very suitable for repair expansion joint concrete cracks, potholes,
broken, exposed reinforcing bar,edge failure etc damages. rapid setting, 1 hour open to traffic.
2: why QM type concrete repair material is suitable?
1)1h open to traffic:
Fast with strength,2h compressive strength ≥33Mpa, 2h flexural strength ≥5Mpa,
Fully meet bridge rapid repairing,reduce traffic congestion.
2)Bonding tightly: No break and fall off from normal concrete under heavy load.
3)High strength: Compressive and flexural strength in late period, both reach 2-3 times of normal concrete. Compressive strength:1d≥60Mpa, 28d≥80Mpa,Flexural strength ≥10Mpa.
4)Good toughness:Impact resistance strength is 8-10 times of normal concrete
impact resistance strength
5)No drying cracks in repaired area and original concrete
6)Good match:Heat expansion and cold contraction coefficient is nearly same with original concrete.
7)Small color difference: Color of repaired area is close to original concrete.
8)Fast repair:
Just need chisel damage area accurately,produce less waste, high efficiency, road closed time is short.
3: what is the testing data?
Test items | Unit | Technical requirement | Test result | Individual conclusion | |
Setting time | Initial setting | Min | ≥20 | 25 | Meet requirement |
Final setting | ≤60 | 35 | |||
Compressive strength | 2h | Mpa | ≥20 | 33.0 | Meet requirement |
1d | ≥40 | 66.1 | |||
28d | ≥50 | 90.5 | |||
Flexural strength | 2h | ≥4 | 5.5 | Meet requirement | |
1d | ≥6 | 10.5 | |||
28d | ≥8 | 13.5 | |||
Pulling strength | 28d | Mpa | ≥2.0 | 2.8 | Meet requirement |
Expansion rate | 28d | / | 0.00%-0.1% | 0.01% | Meet requirement |
4:What is the repair process? Very easy, just 7 steps as below:
