| 骨料粒径对混凝土热膨胀性能的影响 |
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| 引用本文： | 钱春香,朱晨峰. 骨料粒径对混凝土热膨胀性能的影响[J]. 硅酸盐学报, 2009, 37(1) |
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| 作者姓名： | 钱春香 朱晨峰 |
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| 作者单位： | 东南大学材料科学与工程学院,南京,211189 |
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| 基金项目： | 国家自然科学基金，教育部新世纪优秀人才支持计划 |
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| 摘 要： | 混凝土中,骨料的性质很大程度影响着混凝土的热膨胀性能.研究了骨料粒径对混凝土热膨胀系数的影响.结果表明:对于密实度高,粗骨料粒径大于20 mm的混凝土,随着粒径的增加混凝土的热膨胀系数降低;对于低坍落度,骨料粒径小于20 mm的混凝土,随着骨料粒径的增加混凝土的热膨胀系数增加:混凝土热膨胀系数受粗骨料热膨胀性能的影响较大,低热膨胀系数的骨料配制的混凝土热膨胀系数较低.石灰石混凝土的热膨胀系数小于花岗岩混凝土和玄武岩混凝土,大理岩混凝土的热膨胀系数小于砂岩混凝土.
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| 关 键 词： | 骨料粒径 骨料种类 混凝土 热膨胀系数 |
INFLUENCE OF AGGREGATE SIZE ON THERMAL EXPANSION PROPERTY OF CONCRETE |
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| QIAN Chunxiang,ZHU Chenfeng. INFLUENCE OF AGGREGATE SIZE ON THERMAL EXPANSION PROPERTY OF CONCRETE[J]. Journal of The Chinese Ceramic Society, 2009, 37(1) |
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| Authors: | QIAN Chunxiang ZHU Chenfeng |
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| Affiliation: | School of Materials Science and Engineering;Southeast University;Nanjing 211189;China |
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| Abstract: | The properties of aggregates have a strong effect on the coefficient of the thermal expansion property of concrete.The in- fluence of aggregate size on the coefficient of thermal expansion(CTE)of concrete was studied.And the conclusions can be drawn as follows.For the concrete of high density and aggregate size larger than 20 ram,the CTE decreases with the increase of aggregate size. For concrete of small slump and aggregate size smaller than 20 mm,the CTE increases with the increase of aggregate size.The C... |
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| Keywords: | aggregate size aggregate type concrete coefficient of thermal expansion |
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