人造硅酸盐骨料在混凝土中的有效弹性模量

摘要

Measure the elastic modulus of artificial silicate aggregate by simulation prism model canˊt reflect the stress condition in con-crete.The elastic modulus measured in this way is not equal to the effective elastic modulus.Modifier formula of elastic modulus can re-flect the real effective elastic modulus of artificial silicate aggregate in concrete. The effective elastic modulus of artificial silicate aggre-gate is closer to the elastic modulus of mortar. Artificial silicate aggregate and mortar have the same deformation when the concrete in compression. Artificial silicate aggregate under the three-dimensional pressure in concrete,and show stronger rigidity characteristic.%采用棱柱体模拟硅酸盐骨料测其弹性模量，并不能反映硅酸盐骨料在混凝土中的受力状态，测出的弹性模量不能真实反映硅酸盐骨料在混凝土中的“有效弹性模量”。对复合材料弹性模量上限公式进行修正，修正后的公式能较真实的计算出硅酸盐骨料混凝土的弹性模量值。采用外推法得壳层硅酸盐骨料的“有效弹性模量”与砂浆基体弹性模量较为接近，当硅酸盐骨料混凝土受压时，硅酸盐骨料与砂浆基体变形协调一致，硅酸盐骨料在混凝土中为三向受压的应力状态，在混凝土中表现出很强的刚性特征。