With the smooth implementation of the national housing reform policy, the multi floors house of the brick and concrete structure has put into operation in a large scale, and in a series of quality problems appear correspondingly too, such as the cast-in-place board crack. 随着国家房改政策的顺利实施,砖混结构的多层住宅大面积投入使用,一系列质量问题也相应出现,比如现浇板裂缝。