现浇混凝土绿化屋面板龄期应变、应力场的研究及工程应用

Research measures and engineering application to age of strain and stress field in cast-in-situ concrete green roof

种植屋面的现浇混凝土屋盖板不仅较常规楼面板承受更大的荷载集度,且对防渗、抗裂、抗酸性环境有特殊要求,根据对混凝土自收缩变形所得的试验研究成果,对初凝期应变的形成机理进行了综合阐述,并结合现浇屋面混凝土工程的施工提出主要对策。

The green roofs in cast-in-situ concrete slab not only have greater load intensity but also have more special requirements in impermeability,crack and acid resistance environments than normal slab.By analysis the experimental results of shrinkage of concrete deformation carried out by us and other researchers,comprehensive summarization of early stage strain mechanism of concrete was proposed,and some main countermeasures was given in construction cast concrete roof.