EXPERIMENTAL STUDY ON THE SIZE EFFECT OF CONCRETE UNIAXIAL COMPRESSIVE BEHAVIOR
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摘要: 采用刚性辅助架法获得混凝土棱柱体试件的单轴受压应力-应变全曲线。通过对试验结果进行回归分析,得到不同强度等级、不同尺寸试件单轴受压性能之间的关系。对混凝土棱柱体试件单轴受压性能的尺寸效应进行系统研究,重点分析混凝土强度等级对混凝土棱柱体受压的峰值应力、应变、极限应变及弹性模量等尺寸效应的影响,并对这些力学性能参数的尺寸效应系数提出建议。Abstract: The complete stress-strain curves of concrete prism specimens were obtained by the rigid supporttechnique. The compressive behaviors of concrete prisms with different strength levels and specimen sizes wereanalyzed. Based on the test results, the size effect of several mechanical parameters including concrete prismaticcompressive strength, peak strain, ultimate strain and elastic modulus was investigated. Also the size conversionfactor of these mechanical parameters was proposed.
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Key words:
- concrete /
- uniaxial compressive behavior /
- size effect
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