低密度聚乙烯废料细骨料混凝土和砂浆的力学性能研究  

Study on the Mechanical Properties of Low Density Polyethylene Waste Fine Aggregate Concrete and Mortar

作　　者：玉小冰[1] YU Xiao-bing(Hunan Vocational College of Engineering,Changsha 410151,China)

机构地区：[1]湖南工程职业技术学院,湖南长沙410151

出　　处：《塑料科技》2020年第8期60-63,共4页Plastics Science and Technology

基　　金：湖南省高等学校科学研究项目“砌筑用高性能商品砂浆应用研究”(NO.10C0108)。

摘　　要：以低密度聚乙烯(LDPE)塑料颗粒作为部分细骨料的砂浆和混凝土,并研究其力学性质,分析了LDPE细骨料对砂浆或混凝土力学性质的影响。结果表明:LDPE塑料颗粒部分替代砂浆和混凝土中的细骨料,会降低砂浆或混凝土试件的干密度、抗压强度以及劈裂抗拉强度;随着抗压强度的增加,劈裂抗拉强度也增加,但增加速率逐渐降低;同时,在砂浆或混凝土中添加LDPE废塑料颗粒,可以节省天然骨料。The low-density polyethylene(LDPE)plastic particles are used as part of the fine aggregate mortar and concrete,and its mechanical properties are studied,and the influence of LDPE fine aggregate on the mechanical properties of mortar or concrete is analyzed.The results show that LDPE plastic particles partially replace the fine aggregates in mortar and concrete,which will reduce the dry density,compressive strength and split tensile strength of mortar or concrete specimens;with the increase in compressive strength,the splitting tensile strength also increases,but the rate of increase gradually decreases;at the same time,adding LDPE waste plastic particles to mortar or concrete can save natural aggregates.

关 键 词：低密度聚乙烯 混凝土 砂浆 干密度 抗压强度 劈裂抗拉强度 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]