Five causes of sand formation in cement wall
There are many reasons for sand formation in cement walls, including unbalanced water-cement ratio, unreasonable gravel gradation, excessive vibration during construction, improper maintenance and improper control of calendering time.
Wall grinding solution
Aiming at the problem of sanding in different degrees, we provide three solutions: small area grinding, large area light grinding and large area regrinding. You can choose a suitable scheme according to the actual situation.
preventive measure
In order to avoid the sand problem of cement wall, we provide some preventive measures, including paying attention to water cement ratio, gravel classification, construction vibration, maintenance and calendering time.