水利水电技术2018，Vol.49Issue(5)：193-198,6.DOI:10.13928/j.cnki.wrahe.2018.05.028
不同粒径再生粗骨料混凝土单轴受压应力-应变关系试验研究
Experimental study on stress-strain relationship of recycled coarse aggregate concrete with different particle size under uniaxial compression
摘要
Abstract
The influence from the coarse aggregate particle size on the mechanical property of the recycled concrete is studied herein,so as to provide a reference and basis for reasonably selecting the particle size of the recycled coarse aggregate and its replacement rate.Taking the particle size of the recycled coarse aggregate and its replacement rate as the variables,the secondary aggregate grading concrete samples with different replacement rates are made by the recycled aggregates within the particle range of 5 ～ 20 mm,20 ～ 30 mm and 5 ～ 30 mm,and then the mechanical properties of the recycled concretes with different recycled coarse aggregates and replacement rates are analyzed with the relevant uniaxial compression experiments.The experiment result shows that the elastic modulus of the recycled concrete decreases along with the increase of the replacement rate.Under the same replacement rate,the compressive strength of the secondary aggregate grading concrete with the particle size of the recycled coarse aggregate of 5 ～ 30 mm is higher than that of the secondary aggregate grading concrete with the particle size of the recycled coarse aggregate of 5 ～ 20 mm or 20 ～ 30 mm,while the influence from the particle size of the recycled coarse aggregate of 20 ～ 30 mm on the compressive strength of the secondary aggregate grading concrete is the largest.The compressive strength of the secondary aggregate grading concrete is the largest when its recycled aggregate is replaced through full gradation with the replacement rate of 30％.关键词
再生混凝土/再生粗骨料粒径/单轴受压试验/应力-应变全曲线Key words
recycled concrete/particle size of recycled coarse aggregate/uniaxial compression experiment/complete stress-strain carve分类
建筑与水利引用本文复制引用
王瑞骏,赵叶,缑彦强,许萍..不同粒径再生粗骨料混凝土单轴受压应力-应变关系试验研究[J].水利水电技术,2018,49(5):193-198,6.基金项目
陕西省教育厅重点实验室科研计划项目(17JS092) （17JS092）
国家自然科学基金项目(50779051) （50779051）
