楼(地)面顺空心板板缝产生裂纹,严重的会引起渗漏,虽不危及建筑结构的安全,但影响房屋的正常使用和美观,用户意见较大,治理这种通病势在必行。一、开裂的原因1.预应力空心板和板缝现浇混凝土强度等级不同。2.板缝现浇混凝土的收缩是引起板缝开裂的主要原因。二、防治措施1.板缝混凝土浇筑 Floor (ground) faces hollow slab seam cracks, which can cause serious leakage. Although it does not endanger the safety of the building structure, it affects the normal use and aesthetics of the house. The user’s opinion is large, and it is imperative to treat this problem. . First, the cause of cracking 1.Prestressed hollow slab and slab seam in-situ concrete strength levels are different. 2. The shrinkage of cast-in-place concrete in slab seams is the main cause of cracks in slab seams. Second, control measures 1. Board seam concrete pouring