| 等强度下混凝土组分对徐变性能的影响 |
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| 引用本文： | 何智海,钱春香,钱桂枫,孟凡利,程飞,高祥彪,庄园.等强度下混凝土组分对徐变性能的影响[J].功能材料,2011,42(5):925-927,932. |
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| 作者姓名： | 何智海 钱春香 钱桂枫 孟凡利 程飞 高祥彪 庄园 |
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| 作者单位： | 何智海,钱春香,高祥彪,庄园,HE Zhi-hai,QIAN Chun-xiang,GAO Xiang-biao,ZHUANG Yuan(东南大学,材料科学与工程学院,江苏,南京,211189);钱桂枫,孟凡利,程飞,QIAN Gui-feng,MENG Fan-li,CHENG Fei(沪杭客专股份有限公司,上海,200000) |
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| 基金项目： | 国家重点基础研究发展计划(973计划)资助项目，沪杭客运专线特大跨桥梁主梁混凝土材料收缩徐变控制与耐久性提升技术资助项目 |
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| 摘 要： | 采用自制的徐变加载装置,研究了聚乙烯醇(PVA)纤维、双掺粉煤灰和矿渣以及减缩剂对7d等强度混凝土徐变性能的影响规律,结合与混凝土同水胶比浆体的化合结合水量分析了其影响机理.结果表明,混凝土徐变系数发展较快,加载100d左右趋于稳定;减缩剂和双掺矿物掺合料均明显降低了混凝土的徐变系数,以掺减缩剂效果更好,450d值仅为...
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| 关 键 词： | 混凝土 徐变系数 化学结合水 减缩剂 等强度 |
Influence of concrete constituents on creep characteristics of concrete at same compressive strengths |
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| HE Zhi-hai,QIAN Chun-xiang,QIAN Gui-feng,MENG Fan-li,CHENG Fei,GAO Xiang-biao,ZHUANG Yuan.Influence of concrete constituents on creep characteristics of concrete at same compressive strengths[J].Journal of Functional Materials,2011,42(5):925-927,932. |
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| Authors: | HE Zhi-hai QIAN Chun-xiang QIAN Gui-feng MENG Fan-li CHENG Fei GAO Xiang-biao ZHUANG Yuan |
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| Affiliation: | HE Zhi-hai1,QIAN Chun-xiang1,QIAN Gui-feng2,MENG Fan-li2,CHENG Fei2,GAO Xiang-biao1,ZHUANG Yuan1(1.College of Materials Science and Engineering,Southeast University,Nanjing 211189,China,2.Shanghai-Hangzhou Passenger Dedicated Line Limited Company,Shanghai 200000,China) |
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| Abstract: | The influence law of polyvinyl alcohol(PVA) fiber,shrinkage reducing admixture(SRA) and the combined addition of fly ash and slag on creep characteristics of concrete with 7d same compressive strengths were studied by the self-made creep loading device and the influence mechanism were analyzed by testing chemically combined water of paste with same water-binder ratio with concrete.The results indicate that creep coefficients develop rapidly,becoming stable after 100d' loading;SRA and the combined addition o... |
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| Keywords: | concrete creep coefficient chemically combined water shrinkage reducing admixture same compressive strength |
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