摘要
Abstract
In order to analyze the correlation between the mechanical properties of concrete and the replacement rate of recycled aggregate,five kinds of concrete with different replacement rates of recycled aggregate(0,30%,50%,70%and 100%)were studied in this paper,and the compressive strength,folding strength,peak strain and slump of each group of concrete were compared.The results show that the slump,elastic modulus and splitting tensile strength of concrete decrease with the increase of regenerated aggregate substitution rate.The compressive strength of concrete fluctuates with the change of regenerated coarse aggregate substitution rate,but does not show an obvious upward or downward trend.There is no obvious difference of Poisson's ratio between the concrete specimens prepared under different coarse aggregate substitution rates.The flexural strength of concrete will change with the replacement rate of recycled aggregate,but it does not increase or decrease,but the flexural compression ratio will increase with the increase of the replacement rate of recycled aggregate.关键词
再生骨料/再生混凝土/力学性能/取代率/坍落度Key words
Recycled aggregate/Recycled concrete/Mechanical properties/Substitution rate/Slump分类
建筑与水利
