人防地下室工程裂缝处理计划(国外英文资料).docVIP

人防地下室工程裂缝处理方案(国外英文资料) Dragon lake bay peoples basement concrete wall and crack repair plan I company of dragon bay (d d about the plot project) civil air defence basement project, completed the main body construction, basement basement outer backfill soil most has been completed; In the basement quality examination, a small amount of stop water screw was found on the wall of the underground wall, and the water was seepage in the root of the individual stop. The negative a layer in the basement in 2013 after the casting of the roof appeared a few not through crack, seeping in sewing parts when it rains, I company project department for meetings to study the causes of cracks and the treatment method for analysis. The formation of a crack 1, check the external walls of the main causes of water seeping in screw, premature template removed after concrete pouring, demolition of concrete strength is too low, when the water stop screw grip of small, as the templates work when dismantle the screw tapping, vibration, create a loose screw inside the concrete part of, eventually lead to water penetration. The main reason for the cracks in the roof of the basement is that the concrete is larger than the water and the concrete shrinks. The plastic film covered by concrete panels is not fixed with other materials, and the wind blows and the soldiers are not able to keep the water in time. After the construction of concrete is finished, it is too early for the upper part of the construction to be piled up. From the cracking time, this part belongs to the early formation of the cracks, and through continuous observation for many times, nearly a month of roof fracture basically stable, no trends continue to expand. The treatment of cracks The strength of concrete meets the design requirement, to ensure the durability of the house, to prevent corrosion of roof steel and to close the cracks. The sealing materials are made of cement slurry (42.5 R early and regular Portland cement, 107