这里介绍一种用干硬性水泥砂浆处理灰顶裂缝的方法,此法操作简单,材料来源方便,效果也非常理想。1.首先沿裂缝把灰顶凿出一道宽40～50毫米的槽沟,槽沟深度根据灰顶厚度掌握,一般可控制在50～80毫米。槽沟应凿成“(?)”形或“△”形。然后将沟内的碎屑和粉末清除掉。 Here is a method for treating cracks on the top of the limestone with dry and hard cement mortar. This method is simple in operation, convenient in material source, and very effective. 1. First crack a gray 40 to 50 mm wide trench along the crack. The depth of the trench is controlled based on the thickness of the gray roof. Generally, it can be controlled at 50 to 80 mm. Grooves should be chiseled into “(?)” or “?” shapes. Then remove the debris and powder from the ditch.