| 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。 |
| 关键词: 高温缓凝剂,碾压砼,泵送砼,大体积砼,高气温施工,坍落度损失 |
| DOI： |
| 分类号:TV4 |
| 基金项目: |
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| High temperature retarding admixtures for in-situ construction in concrete engineering |
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Xu Hanfeng, Lu liyun, Hu Yuchu, Wu Shaozhang
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Nanjing Hydraulic Research Institute
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| Abstract: |
| 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. |
| Key words: high temperature retarding admixtures, roller compacted concrete, pumping concrete, mass concrete, high air temperature construction, slump loss |
