concrete driveway large potholes repair
1.what caused concrete driveway large potholes?
2.how to repair concrete driveway large potholes?
Repair process:
Identifying→Marking out→Joint-cutting→Chiseling→Washing→Mixing material→
Repairing→Joint-cutting→ 3.How about repair effect? Curing→Open to traffic
3.How about repair effect?
4.Testing data of 28 days:
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 |
5.Benefit analysis:
SC type concrete repair material have super strong compressive strength,
adhesion strength and durability.Rapid,efficient repair to disease area.after completed repair,
1 h can open to traffic. Compared with cement road paving asphalt, this method have 4 big advantage:
1)Can save some money of repairing in earlier stage.
2)Repair service life is long
3)Road bearing capacity is high
4)Adhesion force is far more than asphalt, save time and labour in later period maintenance,
don't need repair again and again.
