| 孔结构对水泥混凝土抗冻性的影响 |
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| 引用本文： | 罗玲,温勇,秦拥军. 孔结构对水泥混凝土抗冻性的影响[J]. 山西建筑, 2011, 37(27): 114-115 |
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| 作者姓名： | 罗玲 温勇 秦拥军 |
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| 作者单位： | 新疆大学建筑工程学院,新疆乌鲁木齐,830047 |
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| 基金项目： | 新疆大学青年科学基金项目(项目编号:070314) |
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| 摘 要： | 用压汞法和扫描电子显微镜研究了冻融循环作用下硬化水泥浆体和混凝土宏观与细观结构的变化。结果表明,冻融以后硬化水泥浆体和混凝土中砂浆的孔隙率,特别是大于50 nm的毛细孔体积和微裂纹增加较多,导致硬化水泥浆体由密实结构向松散结构发展,最后导致粗骨料与砂浆分离。
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| 关 键 词： | 硬化水泥浆体 混凝土 冻融 孔结构 |
On influence of pore structure on frost resistance of cement concrete |
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| LUO Ling WEN Yong QIN Yong-jun. On influence of pore structure on frost resistance of cement concrete[J]. Shanxi Architecture, 2011, 37(27): 114-115 |
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| Authors: | LUO Ling WEN Yong QIN Yong-jun |
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| Affiliation: | LUO Ling WEN Yong QIN Yong-jun |
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| Abstract: | The paper researches the hardened cement paste and the macrostructure and microstructure of concrete by adopting the pressure pumping method and the scanning election microscope,proves by the results that the porosity of hardened cement paste and mortar of concrete increased and especially the capillary pores volume,which are larger than 50 nm,and the microcracks also increased,indicates this can lead to the hardened cement paste will turn from the compression structure to loose structure,and finally the se... |
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| Keywords: | hardened cement paste concrete freeze-thaw pore structure |
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