再生EPS颗粒对混凝土强度的影响  

Effect of recycled EPS particles on the strength of concrete properties

作　　者：吴继囡 齐美丽 王超群 许志鹏 王铭涛 王彦敏 WU Jinan;QI Meili;WANG Chaoqun;XU Zhipeng;WANG Mingtao;WANG Yanmin(School of Transportation Civil Engineering,Shandong Jiaotong University,Shandong Jinan 250357 China)

机构地区：[1]山东交通学院交通土建工程学院,山东济南250357

出　　处：《山东交通科技》2023年第5期44-47,共4页

摘　　要：围绕再生EPS颗粒对C40混凝土抗压强度的影响开展了试验研究,采用两种不同直径的再生EPS颗粒(0.3~0.5mm和0.5~0.8mm)分别制备三种孔隙率立方体试件(3%、5%、8%)。探究了再生EPS颗粒在不同直径、孔隙率和养护龄期条件下对C40混凝土试件强度的影响。试验结果表明,掺入EPS颗粒的C40混凝土结构随颗粒直径的增加强度损失增加,28 d养护的C40混凝土强度损失平均高于7d养护龄期。A systematic experimental study was carried out on the effect of recycled EPS particles on the strength of C40 concrete,and two different diameters of recycled EPS particles(0.3~0.5 mm and 0.5~0.8 mm)were used to prefabricate three porosity cube specimens(3%,5%and 8%).The influence of recycled EPS particles on the strength of C40 concrete specimens under different porosity,particle diameter and curing ages conditions was explored.With the increase of particle diameter,the strength loss of C40 concrete structure incorporated with EPS particles increased,and the strength loss of C40 concrete in 28 days curing was higher than that of 7 days curing on average.

关 键 词：EPS颗粒 混凝土强度 微观孔结构 孔隙率 养护龄期 立方体试件 

分 类 号：TU560.253[建筑科学—建筑技术科学]