| 不同形状尺寸C20混凝土试件抗压强度的关系 |
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| 引用本文： | 朱尔玉,杨威,王建海,林文泉. 不同形状尺寸C20混凝土试件抗压强度的关系[J]. 北京交通大学学报(自然科学版), 2005, 29(1): 1-3,13 |
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| 作者姓名： | 朱尔玉 杨威 王建海 林文泉 |
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| 作者单位： | 北京交通大学,土木建筑工程学院,北京,100044;北京市建设工程质量监督总站,北京,100055;华北电力大学,自动化系,北京,102226 |
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| 摘 要： | 通过大量试验分析了不同形状和不同尺寸混凝土试件抗压强度的相关关系.采用的混凝土试件的形状有立方体、圆柱体及棱柱体,混凝土小试件的横向尺寸为150 mm,大试件的横向尺寸为450 mm.全部试件采用统一配比、统一养护条件,统一试验龄期(约90 d)及统一加载条件来进行加载试验,混凝土强度等级为C20.通过试验发现它们的抗压强度具有较高的相关性.这种相关性可用统一的经验表达式来描述.
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| 关 键 词： | 全级配混凝土 湿筛混凝土 抗压强度 尺寸效应 形状效应 |
| 文章编号： | 1673-0291(2005)01-0001-03 |
Relationship of Compressive Strength of Specimens with Various Shapes and Sizes for C20 MPa Grade Concrete |
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| ZHU Er-yu,YANG Wei,WANG Jian-hai,LIN Weng-qiuan. Relationship of Compressive Strength of Specimens with Various Shapes and Sizes for C20 MPa Grade Concrete[J]. JOURNAL OF BEIJING JIAOTONG UNIVERSITY, 2005, 29(1): 1-3,13 |
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| Authors: | ZHU Er-yu YANG Wei WANG Jian-hai LIN Weng-qiuan |
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| Abstract: | Compressive strength of concrete specimens with different shapes and different sizes are experimentally studied. The shapes of the specimens included cube, column and prism, while maximum and minimum lateral dimensions are 450 mm and 150 mm respectively. All specimens are cast at the same mix proportion, cured under the same condition, and subjected to strength determination under the same loading condition at 90 days. The concrete grade is 20 MPa. The strength values of the specimens of various types are in good consistency. The relativity can be presented by a kind of experimental formula. |
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| Keywords: | fully graded aggregate concrete wet_screened aggregate concrete compressive strength size effect shape effect |
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