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施工中经常遇到水泥砂浆和白灰砂浆抹面起鼓裂缝的问题,并且水泥砂浆抹面比白灰砂浆更容易起鼓裂缝,这是什么原因呢?
In construction, cement mortar and white-gray mortar are often used to crack the surface of drums, and cement mortar is more likely to cause cracks in drums than white mortar. What is the reason?