| 新型水下不分散混凝土的性能研究 |
| |
| 引用本文： | 周伟,林鲜,张长民,丁新龙.新型水下不分散混凝土的性能研究[J].大坝与安全,2005(6):39-43. |
| |
| 作者姓名： | 周伟 林鲜 张长民 丁新龙 |
| |
| 作者单位： | 中国石油集团工程技术研究院,天津,300451;中国石油集团工程技术研究院,天津,300451;中国石油集团工程技术研究院,天津,300451;中国石油集团工程技术研究院,天津,300451 |
| |
| 摘 要： | 对聚丙烯类和聚糖类絮凝剂配制的水下不分散混凝土进行了性能比较,结果表明聚糖类水下不分散混凝土基本克服聚丙烯类混凝土的缺点,其搅拌时间为75 s,混凝土动态和静态2h流动性基本无损失,28d水陆强度比在85%以上,胶凝材料在400～480kg/m3可满足20～30MPa的水下混凝土设计强度要求。
|
| 关 键 词： | 絮凝剂 水下不分散混凝土 搅拌时间 流动性损失 水陆强度比 |
| 文章编号： | 1671-1092(2005)06-0039-05 |
| 收稿时间： | 2005-08-26 |
| 修稿时间： | 2005年8月26日 |
Study on the performance of a new kind of non-dispersion underwater concrete |
| |
| ZHOU Wei,LIN Xian , ZHANG Chang-rain et al..Study on the performance of a new kind of non-dispersion underwater concrete[J].Large Dam & Safety,2005(6):39-43. |
| |
| Authors: | ZHOU Wei LIN Xian ZHANG Chang-rain |
| |
| Affiliation: | CNPC Research Institute of Engineering Technology |
| |
| Abstract: | The performance of underwater non-dispersion concrete admixed with polyacrylate and polysaccharides respectively are compared.It is shown that the shortcomings of concrete admixed with polyacrylate are basically overcome by substituting polysaccharides for polyacrylate.After blended 75s, there are no slump loss occurrence within 2h under dynamic or static states. The ratios of compressive strength cast in water and in the air exceed 85%. Cement of 400-480 kg/m^3 concrete would meet the needs of concrete with compressive strength of 20-30 MPa. |
| |
| Keywords: | agent underwater non-dispersion concrete time of mixing loss of fluidity ratios of compressive strength cast in water and in air |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
