高温季节大体积混凝土温度裂缝施工控制技术  

Construction Control Technique Temperature Cracks on Mass Concrete for Base Plate in the Hot Season

作　　者：姚贤华[1] 盖占方[1] 赵顺波[1] 

机构地区：[1]华北水利水电学院,河南郑州450011

出　　处：《华北水利水电学院学报》2012年第5期24-27,34,共5页North China Institute of Water Conservancy and Hydroelectric Power

基　　金：河南省水工结构与材料工程重点学科开放实验室建设项目(豫教高[2009]222号);郑州市科技领军人才培育计划项目(096SYJH23105)

摘　　要：结合工程实际,采用"双掺"技术降低混凝土的水化热,安装冷却水管降低混凝土中心温升值,并对大体积混凝土施工中的难点进行了论述.在原材料选用、优化混凝土配合比设计、控制混凝土拌合物温度、改善混凝土浇注质量、温度监控及养护等方面采取有效的技术措施,较好地控制了大体积混凝土裂缝的产生.Through the practice, the double-mixture technique is adopted to lower the hydration heat of concrete, the cooling water pipes are installed to reduce the temperature rise of the concrete center, and then the difficulties during the construction of mass con- crete are discussed. And some effective methods are applied to control the cracks, including raw material choice and quality control, optimizing mix proportion, controlling the temperature of mixture, improving pouring quality and monitoring temperature and conserva- tion and so on.

关 键 词：大体积混凝土 配合比设计 温差 浇注质量 温度监控 

分 类 号：TU755.7[建筑科学—建筑技术科学]