污泥渗水砖的制备研究

污泥渗水砖的制备研究第2卷�第12期环境工程学报Vo.l2,No.122008年12月ChineseJournalofEnvironmentalEngineeringDec.2008污泥渗水砖的制备研究于衍真�管丽攀�赵春辉�冯�岩(济南大学土木建筑学院,济南250022)摘�要�结合压制成型和传统的烧结砖工艺,实验以城市生活污泥、黄河淤泥、煤矸石及砂为原料,制备渗水铺地砖。通过正交试验得到最优工艺参数为w(黄河淤泥)�w(煤矸石)�w(污泥)�w(砂)=33%�22%�15%�30%、成型压力为20MPa、烧结温度为1100�、保温时间为1.5h,骨料砂的粒径为1~2mm。制备的成品抗压强度为21.8MPa,渗水系数为1�03�10-2cm/s。并对成型压力及烧结温度对渗水砖抗压强度及渗水系数的影响进行了讨论。关键词�污泥�抗压强度�渗水系数中图分类号�X705��文献标识码�A��文章编号�1673�9108(2008)12�1691�04InvestigationonproducingwaterpermeablebrickswithsludgeYuYanzhen�GuanLipan�ZhaoChunhui�FengYan(SchoolofCivilEngineeringandArchitecture,JinanUniversity,Jinan250022)Abstract�Basedontakingshapeinpressureandtraditionalfiredbricksprocess,waterpermeablebrickswereproducedwithmunicipalsewagesludge,YellowRiversludge,coalgangueandsandwhichusedincoarseaggregate.Throughorthogonaltestandrangeanalysis,itwasconcludedthat15%sludge,33%YellowRiversludge,22%coalgangueand30%sandingrainsizeof1~2mmunderamoldingpressureof20MPaandasinteringconditionof1100�for1.5hcouldgenerateabrickwithacomp