随着住房改革和经济的发展,人们纷纷乔迁新居,在兴奋之余,由于天棚普遍存在顺板缝方向的裂缝,有时甚至渗透漏水,时常给人带来烦恼和不安。据研究这种裂缝均发生在预制楼板拼接的缝上或预制楼板和现浇板的接缝上,有时是在工程竣工前就出现了,也有用户使用一段时间后出现的,一般情况是上下通裂。 With the housing reform and economic development, people have to move to new homes, in addition to the excitement, due to the prevalence of skylights along the cracks along the suture direction, and sometimes even leaks, often bring people to worry and anxiety. According to the study of such cracks are occurred in the prefabricated slab stitching seam or prefabricated floor and the joints of the cast-in-place board, sometimes before the completion of the project appeared, there are users to use after a period of time, the general situation is up and down crack.