自密实混凝土的力学性能试验

Mechanical property experiment of self-compacting concrete

为进一步了解自密实混凝土的力学性能,进行了自密实混凝土立方体抗压强度、棱柱体抗压强度、劈裂抗拉强度、弹性模量、抗折强度和应力-应变全曲线等基本力学性能试验,并在试验基础上,分析了各强度指标之间的相互关系,建立了棱柱体抗压强度、劈裂抗拉强度、弹性模量以及抗折强度与立方体抗压强度之间的关系式.结果表明:试验方法对自密实混凝土的抗压强度有较大影响;自密实混凝土应力-应变全曲线的计算曲线与试验曲线吻合良好.

In order to know the more information about the mechanical properties of self-compacting concrete, the cubic and prismatic compressive strength, the splitting tensile strength, modulus of elasticity, and complete stress-strain were tested. The relationship of all kind of strengths was analyzed. The approximate formulas among prismatic compressive, splitting tensile strength, elastic modulus, and flexure strength with cubic compressive strength were obtained based on the tests. The results showed that the compressive strength of the self-compacting concrete was influenced by the experimental method. The stress-strain curves of self-compacting concrete between calculated and tested results agreed well with each other.