在北美地区,建筑物使用的混凝土空心砌块外墙,绝大多数是清水墙砌体,即墙面上不再抹灰,最多表面喷涂一层涂料。因此,对于装饰砌块清水建筑外墙而言,砌块的抗渗性能显得非常重要!不过,最新版的美国ASTM C140M-15ae1《混凝土墙用砌块和其它块材的取样检验方法标准》中,仍然没有混凝土空心砌块(砖)抗渗性能的检测方法。实际上,美国人是让产品生产企业和设计、施工单位,一起来解决混凝土 In North America, the majority of concrete hollow block facades used in buildings are clear water masonry walls, that is, no plaster is applied to the walls and a maximum amount of paint is sprayed on the surface. Therefore, the impermeability of block is very important for the exterior wall of the decorative block water. However, the latest edition of ASTM C140M-15ae1 “Sampling and Testing Methods for Concrete Block Wall Blocks and Other Blocks” , There is still no concrete hollow block (brick) impermeability testing methods. In fact, Americans are to allow product manufacturers and design, construction units, together to solve the concrete