Basic Mechanical Properties of Recycled Coarse Aggregate Self-compacting Concrete

被引：0

作者：

Liu Q. ^{[1
]}

Han F. ^{[1
]}

Yu G. ^{[1
,2
]}

Xu P. ^{[1
]}

机构：

[1] College of Architectural and Civil Engineering, Xinjiang University, Urumqi

[2] Civil Engineering College, Qingdao Technological University, Qingdao

来源：

Jianzhu Cailiao Xuebao/Journal of Building Materials | 2020年 / 23卷 / 05期

关键词：

Constitutive equation; Cubic compressive strength; Recycled coarse aggregate; Self-compacting concrete; Splitting tensile strength; Stress-strain curve;

D O I：

10.3969/j.issn.1007-9629.2020.05.009

中图分类号：

学科分类号：

摘要：

Through the working performance, cubic compressive strength, splitting tensile strength, axial compressive strength and stress-strain tests of recycled coarse aggregate self-compacting concrete(RCASCC), the changes of working performance and basic mechanical properties under different replacement rates of recycled coarse aggregate were analyzed. The stress-strain constitutive equation of the RCASCC was put forward. The results show that with the increase of replacement rate of recycled coarse aggregate, the working performance of RCASCC becomes worse, but still can meet the current standard requirements; with the increase of replacement rate, the cubic compressive strength, axial compressive strength and splitting tensile strength of RCASCC are generally decreased, but when the replacement rate is 50%, the cubic compressive strength and axial compressive strength are higher than that for the replacement rate is 25%; the compressive strength of RCASCC shows a nonlinear growth trend with the increase of age. The conversion relations between the axial compressive strength, splitting tensile strength and cubic compressive strength of RCASCC and those of ordinary concrete is in agreement, the stress-strain constitutive equation of RCASCC is similar to the single-axis compression constitutive equation of ordinary concrete. © 2020, Editorial Department of Journal of Building Materials. All right reserved.

引用

页码：1053 / 1060

页数：7

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