加气混凝土是一种具有轻质、保温、耐火等优良性能的建筑材料。但因抗拉与抗折强度较低,用做墙板或楼板时均配置钢筋。而钢筋在加气混凝土板材内需要一定厚度的保护层,因此使其板材的厚度都做成50毫米以上的。同时加气混凝土还存在表面硬度低和吸水性大的缺点,在一般使用上通常采用有机的或无机的表面复合层来改善这种性质。但是过去所采用的一 Aerated concrete is a kind of building material with light weight, heat preservation, fire resistance and other excellent properties. However, due to the low tensile strength and flexural strength, reinforcements are used when used as wall panels or floor slabs. The reinforcing steel needs a protective layer of a certain thickness in the aerated concrete sheet, so the thickness of the sheet is made to be 50 mm or more. At the same time, aerated concrete has the disadvantages of low surface hardness and large water absorption. In general use, organic or inorganic surface composite layers are often used to improve this property. But the one used in the past