高温缓凝剂在砼工程中的应用研究  

High temperature retarding admixtures for in-situ construction in concrete engineering

作　　者：徐汉丰[1] 鹿立云[1] 胡玉初[1] 吴绍章[1] 

机构地区：[1]南京水利科学研究院材料结构研究所

出　　处：《水利水运科学研究》1997年第4期366-372,共7页

摘　　要：本文结合道路、水利水电、桥梁工程施工实例研究新型高温缓凝剂（HR）的技术性能，结果表明采用高温缓凝剂可使当前碾压砼、泵送砼在高温下施工存在的层间结合问题、坍落度损失问题得到有效解决，取得良好的技术经济效果。Combined with construction examples in highway, hydraulic and bridge engineering,this paper studied the technical features of new type high temperature retarding admix-tures(HR). Research results revealed that the properties of interlayer bonding of roller compacted concrete, slump loss of pumping concrete in construction under high tempera- ture can be obviously improved by use of the high temperature retarder, and good technical and economic benefits had been obtained.

关 键 词：高温 缓凝剂 钢筋混凝土 

分 类 号：TU528.571[建筑科学—建筑技术科学] TU528.042