不同形状尺寸C20混凝土试件抗压强度的关系  

Relationship of Compressive Strength of Specimens with Various Shapes and Sizes for C20 MPa Grade Concrete

作　　者：朱尔玉[1] 杨威 王建海[3] 林文泉[1] 

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]北京市建设工程质量监督总站,北京100055 [3]华北电力大学自动化系,北京102226

出　　处：《北京交通大学学报》2005年第1期1-3,13,共4页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家自然科学基金资助项目(59379408)

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150mm,大试件的横向尺寸为450mm.全部试件采用统一配比、统一养护条件,统一试验龄期(约90d)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.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.

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 

分 类 号：TU528.36[建筑科学—建筑技术科学]