生态混凝土在治理重金属污染岩质边坡中的应用  

Application of ecological concrete in governance rock slope with heavy metal pollution

作　　者：程峰[1,2] 王星华[1] 莫时雄[2] 郭尚其[2] 胡乔帆[2] 

机构地区：[1]中国有色桂林矿产地质研究院有限公司,广西桂林541004 [2]中南大学土建学院,湖南长沙410083

出　　处：《矿产与地质》2016年第1期127-131,共5页Mineral Resources and Geology

基　　金：湖南省科技厅重点支持项目(04SK2008);高等学校博士学科点专项科研基金(20120162110023)资助

摘　　要：通过配合比试验研究了生态混凝土的性能指标并进行了工程应用。在不同级配条件下,对5种试样进行抗压强度与植物生长试验。强度试验结果表明:当生态混凝土原料(减水剂:沸石:水:水泥:石灰石)的配合比为1∶16∶19∶60∶235时,抗压强度满足护坡强度要求;植物生长试验结果表明:当容重为1.89g/cm3,孔隙率为29.1%,吸水率为3.2%时,是护坡植物最优的生长条件;在治理重金属污染岩质边坡工程的应用表明,生态混凝土能有效吸附岩体中的重金属元素,具有良好的护坡与绿化功能。The performance indicators of ecological concrete was studied by mixing proportion test and applied to engineering. Under the condition of different graduation, compressive strength test and plant growth test were done with 5 kinds of specimen compressive strength test showed that the compressive strength meet re quirements of slope protection strength when the mix proportion of ecological concrete （water reducing agent： zeolite： water： cement： limestone） was 1 ： 16 ： 19 ： 60 ： 235,plant growth test showed that the growing conditions of slope protection plant was optimal. When the bulk density was 1.89g/cm3 , porosity was 29. 1%, bibulous rate was 3. 2%. The application of engineering showed that ecological concrete can adsorb heavy metal elements in rock mass effectively and has good slope protection and greening function.

关 键 词：重金属污染 岩质边坡 配合比 护坡强度 生长条件 

分 类 号：U417.2[交通运输工程—道路与铁道工程]