火力发电厂输煤系统地下防水混凝土应用较多,其混凝土用量相当于主厂房一台机基础的混凝土用量,且防水面积较大。以往防水混凝土一般用在结构外侧作防水层、再作保护层。同时考虑到防水层局部防水性能不稳定等因素,常采用抗渗混凝土 S_6加强防水。明矾石膨胀剂是在搅拌混凝土时掺入混凝土中,它与 The underground coal-water-repellent concrete of coal-fired power plant is widely used, and the amount of concrete is equivalent to the amount of concrete used in the main building of a machine foundation, and the waterproof area is larger. In the past, waterproof concrete was generally used on the outside of the structure as a waterproof layer and then as a protective layer. At the same time taking into account the partial waterproof performance of the waterproof layer is not stable and other factors, often impermeability concrete S_6 to strengthen the waterproof. Alumite expander is mixed with concrete when mixing concrete. It is