糯扎渡大坝心墙垫层混凝土温控施工技术

糯扎渡大坝心墙区垫层混凝土面积大，厚度小，为簿壁混凝土，其现场施工通道少，心墙两侧岸坡比较陡，模板安装、混凝土入仓困难，同时糯扎渡地区天气炎热，昼夜温差大，防裂难度高。本文将通过工程实际对垫层混凝土裂缝产生成因及施工防裂技术进行分析研究

Construction technology for temperature control of bedding concrete for core-wall in Nuozhadu Dam

The area of bedding concrete for the core-wall in Nuozhadu Dam is large with a thin thickness,and then is a kind of thin-wall concrete;for which the for mwork erection and concrete placement are difficult due to few passages in the construction site and more steep slopes on both the banks of the core-wall,furthermore,the anti-cracking of the concrete is quite difficult as the weather therein is quite torrid with a large temperature difference between day and night.The causations of the cracking of the beddi...