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Relationship of Compressive Strength of Specimens with Various Shapes and Sizes for C20 MPa Grade Concrete
Author(s): 
Pages: 1-3,13
Year: Issue:  1
Journal: JOURNAL OF BEIJING JIAOTONG UNIVERSITY

Keyword:  全级配混凝土湿筛混凝土抗压强度尺寸效应形状效应;
Abstract: 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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