how to repair concrete driveway crack
1.About Henan Huineng:
Our company have rich professional experience.8 years public praise of sincerity service. Served more than 600
above county level high speed operating companies,highway administration bureau,road transport bureau,city
construction bureau,municipal companies,A large number of key projects of domestic and international. Our product
and service have been highly approved by many customers. The popularization and application of this technology
surely will improve road and bridge repair productivity. Solve traffic jams, achieve win-win of economic and
environment benefits.
2.How to repair concrete driveway crack?
1)Identifying: Select area need to be repaired.
2)Cleaning:Clean out crushed stone, dust etc cleanly within area need to be repaired by high pressure blower gun.
3)Washing:Thoroughly wash area need to be repaired cleanly by high pressure water gun,
It should rush mud out from operation surface when wash. .
4)Wetting: After wash cleanly by water,it should keep water in operation surface for a period time.
Fully wetting operation surface, until it is no longer seep water.
5)Cleaning: Clean water out from operation surface by high pressure blower gun.(If have water,it will seriously affect material adhesive property,compressive strength and beauty)
6)Adding water: Mix SC type concrete repair material and water then stir, effect is best when water added 17%-18%.
7)Mixing: It must fully stir evenly when stir by vertical mixer.
8)Paving:Pour mixed repair material to operation surface need repair, flattening by darby immediately
3.Testing data to repair concrete driveway crack:
Test items | Unit | Technical requirement | Test result | Individual conclusion | |
Setting time | Initial setting | Min | ≥20 | 25 | Meet requirement |
Final setting | ≤60 | 35 | |||
Compressive strength | 4h | Mpa | ≥20 | 33.0 | Meet requirement |
1d | ≥40 | 66.1 | |||
28d | ≥50 | 90.5 | |||
Pull strength | 28d | Mpa | ≥2.0 | 2.8 | Meet requirement |
Expansion rate | 28d | / | 0.00%-0.1% | 0.01% | Meet requirement |
4.Five big core technology to repair concrete driveway crack:
1)Beautiful,small color difference,Joint tightly after repair
2)Fast setting,1 hour open to traffic after repaired, reduce traffic jams.
3)High adhesion strength, high compressive & flexural. Good toughness
4)Impact resistance strength is more than 5 times of normal concrete.
5)Waterproof anti-freeze,heat expansion and cold contraction is nearly same. Service life is much longer.
