一、改善大体积砼约束条件1、防水层(滑动层)的做法及选择一般地下室防水采用双保险方式即砼自防水和外防水两种方式,外防水分刚性防水和柔性卷材防水、聚氨脂弹性涂料防水几大类。由于大体积砼底板在水化反应过程中核心区温度一般在70C°以上,砼表面温度在50C°左右,大体积砼 First, to improve the mass concrete constraints 1, the waterproof layer (sliding layer) approach and choice of the general basement waterproof double insurance means that the concrete self-waterproof and waterproof in two ways, the outer waterproof rigid waterproof and flexible membrane waterproof, poly Antibacterial waterproof polyurethane waterproof several categories. Due to the large volume of concrete floor in the hydration reaction core zone temperature is generally above 70C °, the concrete surface temperature is about 50C °, mass concrete