混凝土结构冬期负温施工的关键及配套技术  

Key point and combined technology for concrete structure construction in winter

作　　者：黄明[1] 郑鑫 

机构地区：[1]辽宁科技大学建设监理中心,辽宁鞍山114044 [2]鞍山市建设工程招标管理站,辽宁鞍山114044

出　　处：《辽宁工程技术大学学报（自然科学版）》2008年第2期233-235,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：基金项目:辽宁省教育厅基金资助项目(2005-198)

摘　　要：针对冬季负温施工结构混凝土的期望有较好的耐久性要求,根据广义综合蓄热施工方法的最新成果,对复合防冻剂的构成及选择计算,不同负温环境条件下的保温要求及混凝土热拌初始温度、临界强度、临界成熟度等关键技术进行分析,并通过工程实例揭示了负温早强方法、措施和工频涡流、远红外加热等配套技术。In view of the expected better target of concrete structure construction in winter （ strength loss is zero in 90days, with good durable properties）, the paper explains the reason for the early time damages of concrete in winter and the influences on structure and mechanical properyies. According to the newest result of broad sense heat-keeping construction method, it analyses the following items such as the selection of complex frostproof materials, heatkeeping requirement under different conditions ,elementary temperature of concrete mixing ,critical intensity, critical maturity and etc., putting forward the fast strength method , measurement, line-frequency induction, and far-infrared heeting technologies.

关 键 词：膨胀应力 复合防冻剂 含水率 临界成熟度 耐久性 

分 类 号：TV315[水利工程—水工结构工程]