新型墙体材料包括砖类、小型空心砌块类、泡沫砌块类、墙板类和蒸压加气混凝土砌块类等五大品种。它们在强度、干缩、吸水性和保水性、表面强度和粗糙程度、砂浆粘附力等方面与普通粘土砖差异很大 ,如收缩值 :粘土砖为０～０．２‰ ,混凝土空心砌块为０．３７‰ ,中型粉煤灰硅 New wall materials, including brick, small hollow block, foam blocks, wall panels and autoclaved aerated concrete block five categories. They are very different from common clay brick in terms of strength, shrinkage, water absorption and water retention, surface strength and roughness, mortar adhesion and other aspects, such as shrinkage values: clay brick is 0 ~ 0.2 ‰, concrete hollow masonry Block 0.37 ‰, medium fly ash silicon