我们从多年的工程施工实践中观察到,粉煤灰加气混凝土砌块抹灰面起壳开裂的原因主要有三点:1.设计交代不清;2.施工操作不当;3.砌块本身湿胀、干缩。有些设计图纸一般只说明墙体采用加气混凝土砌块。对于砌筑砂浆、门窗洞框、电器、消防、储柜盒子边以及预埋木砖、暗管暗线、踢脚线等部位的构造要求和组砌方法,未作详细交代。由于粉煤灰加气混凝土砌块是由粉 We have observed from many years of construction practice that there are three main reasons for the cracking of fly ash aerated concrete blocks from the shell: 1. The design is unclear; 2. The construction is not performed properly; 3. The block itself is wet. Swelling and shrinking. Some design drawings generally only indicate that the wall uses aerated concrete blocks. For the masonry mortar, door and window frames, electrical appliances, fire protection, storage box side and built-in wooden brick, dark pipe dark line, baseboard and other parts of the construction requirements and methods of grouping, did not elaborate on. As the fly ash aerated concrete block is made of powder