EXPERIMENTAL RESEARCH ON THE CUBIC STRENGTH OF RECYCLED COARSE AGGREGATE CONCRETE

摘要

In order to investigate the cubic strength of recycled aggregate concrete (RAC),33 specimens were designed. Waste electric pole concrete (Used 50 years,and cubic strength is C30) crushed as recycled coarse aggregates,33 recycled aggregate concrete cubic specimens(150 mm×150mm×150 mm) are mixed in 11 kinds of different recycled coarse aggregates replacement percentage,every kind has 3 specimens. And the replacement percentages recycled coarse aggregate from 0 to 100%,the increment is 10%. The failure patterns and loading-displacement curve can be obtained using an electro-hydraulic servo test machine. Based on the experimental results,the stress-strain relationship curve of different recycled coarse aggregates replacement percentage RAC specimens are analyzed. Research results shows that with the increasing of recycled coarse aggregates replacement percentage,the cubic strength of RAC have slight enhancements; the shape of stress-strain relationship curve is similar between RAC and normal aggregate concrete.