| 预制盾构高性能混凝土的研究和应用 |
| |
| 引用本文： | 李小红,卯战革. 预制盾构高性能混凝土的研究和应用[J]. 混凝土, 2009, 0(9). DOI: 10.3969/j.issn.1002-3550.2009.09.034 |
| |
| 作者姓名： | 李小红 卯战革 |
| |
| 作者单位： | 中国水利水电十一工程局有限公司中心实验室,河南三门陕,472000 |
| |
| 摘 要： | 结合南水北调中线穿黄II-A、II-B标工程预制盾构管片的施工,对配制管片高性能混凝土的原材料和配合比进行了优选.该配合比通过正交试验,对内掺掺合料的高性能混凝土配合比的多项指标进行了考查,确定出经济合理的配合比.依据该配合比配制的混凝土试验结果表明:混凝土强度达到了C50、拌合物易于浇捣、抗渗等级满足W12、抗冻等级满足F200,碱含量仅2.18 kg/m3;通过蒸养工艺的优化,有效提高了混凝土的早期强度,使8 h(含升、降温过程)蒸养强度达到20MPa以上,达到每天可以生产两批产品的效率.
|
| 关 键 词： | 盾构管片 高性能混凝土 配合比 蒸养工艺 |
Research and application of prefabricated shield high performance concrete |
| |
| LI Xiao-hong,MAO Zhan-ge. Research and application of prefabricated shield high performance concrete[J]. Concrete, 2009, 0(9). DOI: 10.3969/j.issn.1002-3550.2009.09.034 |
| |
| Authors: | LI Xiao-hong MAO Zhan-ge |
| |
| Affiliation: | Center Test Chamber;Chinese Water Conservation and Water Electricity 11 Construction Bureau Co.;Ltd.;Sanmenxia 472000;China |
| |
| Abstract: | Considering the prefabrication shield parts construction of median line of South-to-North Water Diversion Project crossed levels of II-A and II-B on Yellow River,the raw materials and mix ratio of high-performance concrete with tunneling are optimized.The mix ratio is verified by orthogonal experiments,checking various indexes of mix ratio for high-performance concrete with inner admixtures,identifying the economical and appropriate ratio.The results show: the various mixtures are poured and vibrated easily... |
| |
| Keywords: | shield tunneling high performance concrete mix ratio steam curing |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
