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| 机制砂中石粉含量对混凝土抗渗性能的影响 | |
| 引用本文： | 李婷婷,王稷良,郑国荣,周明凯,李北星. 机制砂中石粉含量对混凝土抗渗性能的影响[J]. 混凝土, 2009, 0(3). DOI: 10.3969/j.issn.1002-3550.2009.03.011 |
| 作者姓名： | 李婷婷 王稷良 郑国荣 周明凯 李北星 |
| 作者单位： | 1. 武汉理工大学,硅酸盐工程中心教育部重点实验室,湖北,武汉,430070 2. 交通部公路科学研究院,北京,100088 3. 吉茶高速公路建设开发有限公司,湖南,湘西,416000 |
| 摘 要： | 随着天然砂的日益短缺,机制砂已成为建设用砂的重要来源,针对机制砂中石粉含量,目前各国标准最高限值存在较大差异.通过研究石粉含量对C30、C60、C80混凝土工作性、强度、抗渗性能的影响,得出了不同强度机制砂混凝土石粉含量最佳值,试验表明:低强混凝土的最佳石粉含量介于10%～15%之间,高强混凝土的最佳石粉含量介于7%～10%之间,而超高强机制砂混凝土的最佳石粉含量介于3%～5%之间. |
| 关 键 词： | 机制砂 石粉 抗渗性能 |
Effects of micro-fines on impermeability of manufactured-sand concrete |
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| LI Ting-ting,WANG Ji-liang,ZHENG Guo-rong,ZHOU Ming-kai,LI Bei-xing. Effects of micro-fines on impermeability of manufactured-sand concrete[J]. Concrete, 2009, 0(3). DOI: 10.3969/j.issn.1002-3550.2009.03.011 | |
| Authors: | LI Ting-ting WANG Ji-liang ZHENG Guo-rong ZHOU Ming-kai LI Bei-xing |
| Affiliation: | 1. Key Lab for Silicate Materials Science and Engineering of Ministry of Education;Wuhan University of Technology;Wuhan 430070;China;2. Research Institute of Highway;Ministry of Communication;Beijing 100088;3. Jicha Expressway Construction & Development Co.;Ltd.;Xiangxi 416000;China |
| Abstract: | With the growing shortage of natural sand,manufactured-sand become an important source of sand.According to the top limited con- tent of micro-fines in manufactured-sand,there are great differences in the standard of every country.The effects of the different content mi- cro-fines in manufactured-sand on the compressive strength,working performance,impermeability in different strength grade concrete are re- searched.The result shows that:Optimum content of micro-fines of low-strength concrete is within 10%~... |
| Keywords: | manufactured-sand micro-fines impermeability |
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