近二十年混凝土冬施技术的最新进展  

The latest advances of technology about concrete construction in winter nearly twenty years

作　　者：张彤[1] 田帅[1] 陈鸿雁 周云麟 

机构地区：[1]辽宁科技大学,辽宁鞍山114051 [2]冀东水泥吉林公司,吉林吉林132002 [3]台安中威企远混凝土公司,辽宁鞍山114039

出　　处：《混凝土》2013年第9期40-42,共3页Concrete

基　　金：辽宁省教育厅科学研究项目(L2012097);校级教改项目

摘　　要：近二十年来对冬施混凝土冻害预防,广义综合蓄热施工方法、第三代减水剂—聚羧酸钠(PCE)问世、临界成熟度理论、复合防冻剂以及负温下混凝土施工关键、配套技术等成果不断涌现,促进了冬施技术的发展进步。通过对各种冬施方法的技术经济分析比较,为不同条件下的混凝土冬施方法的选择提供依据。Nearly twenty years, freezing damage prevention of concrete construction in winter, construction methods of generalized inte grated heat storage, the third generation of water-reducing agent（Poly carboxylic acid sodium）, the theory of critical maturation degree, composite antifreeze, the key and matching technology of concrete construction under negative temperature and so on are all emerging con- stantly.Development progress of winter construction technology is promoted.All kinds of technology and economic about construction methods in winter are compared.The selection basis of concrete construction methods in winter is provided for different conditions.

关 键 词：膨胀应力 聚羧酸钠 复合防冻剂 耐久性 

分 类 号：TU528.01[建筑科学—建筑技术科学]