The phenomenon: When removing the formwork, concrete surface there are small cracks,development does not follow directions would like bird feet. Cause: No new concrete pouring should face when sunlight to the water evaporates too quickly, precast concrete shrinkage cracks. Repair remedies: Use water cement and plaster, then covered with sacks of watering, maintenance. If the crack grew to wide chisel and then plastered or concrete spray small high grade gravel.
đang được dịch, vui lòng đợi..
