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采用埋空心管楼板可使房屋空间扩大,而且隔音效果好,因此,应用前景看好。但此项技术尚处在开发阶段,一些地方的楼板拆模后,在沿空心管方向的底部出现不同程度的裂纹。一、产生原因1.此类楼板的混凝土设计强度等级均大干C30,最高有C50的,由于混凝土强度高,所用水泥的强度等级高,水泥用量也大,导致混
The use of hollow floor can make the expansion of housing space, and good sound insulation, therefore, the application prospects. However, this technology is still in the development stage. Some floors have different degrees of cracks at the bottom along the direction of the hollow pipe after the floor is disassembled. First, the causes 1. Such concrete floor design strength levels are large C30, the highest C50, due to the high strength of concrete, cement used in the high grade, the amount of cement is also large, leading to mixed