微生物水泥基材料抗冻性和抗冲刷性  

Performance of microbe cementitious materials

作　　者：荣辉[1] 钱春香[1] 王欣[1] 

机构地区：[1]东南大学材料科学与工程学院,南京211189

出　　处：《功能材料》2014年第11期11091-11095,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51072035);教育部博士点基金资助项目(20090092110029);江苏省普通高校研究生科研创新计划资助项目(CXZZ_0145);东南大学优秀博士学位论文基金资助项目(YBJJ1127;YBPY1208);<科技导报>博士生创新研究资助计划资助项目(kjdb2011001)

摘　　要：利用微生物水泥成功胶结高为50 cm,直径为5 cm的圆柱体砂柱。分别对其距离注射口不同位置处的砂柱进行抗压强度、冻融循环以及冲刷性实验。实验结果表明,微生物水泥砂柱随着远离菌液注射口,其抗压强度不断降低;微生物水泥胶结距离注射口0～30 cm处的砂柱抗冻性好,而超过30 cm,则抗冻性较差;微生物水泥胶结的50 cm高砂柱经0.5 h冲刷后,其不同部位均具有较好抗冲刷性。The sandstone,which was 50 cm of height,5 cm of diameter,was cemented successfully by microbe cement.The compressive strength,the freeze-thaw cycle and water wash resistance of bio-sandstone under different positions distance from the injection ports are analyzed,respectively. The results showed that the compressive strength of bio-sandstone as far away from the bacteria injection ports are all decreased. The bio-sandstone of 0-30 cm distance from injection port has good freeze-thaw resistance,however,it has poor freeze-thaw resistance when the distance as far away from the injection port was over 30 cm. The different positions of bio-sandstone that was cemented by microbe cement after 0. 5 h water wash are all good wash water resistance.

关 键 词：微生物水泥 抗冻性 抗冲刷性 抗压强度 

分 类 号：TU525[建筑科学—建筑技术科学]