一、概况当前,预制空心楼板已逐渐被现浇钢筋混凝土楼板所代替,结构整体性越来越好,但是现浇楼板的裂缝也成了较为普遍的质量通病。二、工程实例某住宅小区,大部分为砖混结构住宅,毛石基础,现浇楼板厚度大部分为100m m,钢筋采用HPB235。混凝土强度等级为C20。当住户入住,经一个 I. Overview At present, the prefabricated hollow floor has been gradually replaced by cast-in-place reinforced concrete floor, the overall structural integrity is better, but the cracks in cast-in-place floor has become more common quality problems. Second, the project example A residential area, most of the masonry-style residential buildings, stone base, most of the thickness of cast-in-situ floor is 100m m, reinforced with HPB235. Concrete strength grade C20. When tenants stay, after one