| 尾矿砂石混凝土的干缩性能研究 |
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| 引用本文： | 封孝信,蔡基伟,柴红俊,宋裕增.尾矿砂石混凝土的干缩性能研究[J].商品混凝土,2009(8). |
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| 作者姓名： | 封孝信 蔡基伟 柴红俊 宋裕增 |
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| 作者单位： | 河北理工大学材料学院河北省无机非金属材料实验室;唐山建设集团有限责任公司混凝土施工分公司;唐山市建设工程质量监督检测站; |
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| 摘 要： | 分别以铁尾矿砂和铁尾矿石代替天然砂和普通碎石配制了C30和C60两个强度等级的混凝土。测定了试件在自然养护条件下的干燥收缩率。结果表明,不论是C30等级,还是C60等级,尾矿砂石混凝土的干燥收缩率均小于天然砂石混凝土的收缩率。不论是天然砂石混凝土,还是尾矿砂石混凝土,C60强度等级的混凝土的干燥收缩率均大于C30强度等级的混凝土。
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| 关 键 词： | 混凝土 铁尾矿砂 铁尾矿石 干燥收缩 |
Investigation of drying shrinkage of concrete prepared with iron mine tailings |
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| Feng Xiaoxin,Cai Jiwei,Chai Hongjun,Song Yuzeng.Investigation of drying shrinkage of concrete prepared with iron mine tailings[J].Ready-mixed Concrete,2009(8). |
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| Authors: | Feng Xiaoxin Cai Jiwei Chai Hongjun Song Yuzeng |
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| Affiliation: | 1.Hebei Province Key Laboratory of Inorganic Nonmetallic Materials;College of Materials Science and Engineering;Hebei Polytechnic University;Tangshan 063009;2.Division of Ready-mixed Concrete;Tangshan Construction Group Ltd.Co.;Tangshan 063000;3Tangshan Station for Quality Supervision and Measurement of Architectural Engineering;Tangshan 063000 |
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| Abstract: | Concretes of C30 and C60 were prepared with iron mine tailings as fine aggregate and coarse aggregate and with natural sand and common crushed stone separately.The drying shrinkage of concretes cured under the natural condition in the laboratory was tested.The results showed that whether C30 or C60 the shrinkage of concrete prepared with iron mine tailings was a little smaller than that of concrete with natural sand and common crushed stone.It was also found that whether the concrete with iron mine tailings... |
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| Keywords: | concrete aggregates iron mine tailings drying shrinkage |
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