硅酸盐学报2012，Vol.40Issue(11)：1564-1569,6.
镁添加剂对微生物水泥基材料力学性能的影响
Influence of Magnesium Additive on Mechanical Properties of Microbe Cementitious Material
摘要
Abstract
The influence of magnesium additive concentrations (i.e., 0.5, 1.5, 2.5, 3.5 mol/L and 4.5 mol/L) on the mechanical proper- ties of microbe cementitious material was investigated. In addition, the mineral composition produced by microbe and microstructure of microbe cementitious material was analyzed by X-ray diffraction and scanning electron microscopy. The results indicate that when the magnesium additive concentration is 2.5mol/L, the microbe cementitious material has the denser microstructure with the lower porosity. The compressive strength could be superior. When the magnesium additive concentration was rather low, the precipitated minerals induced by microbe in the microbe cementitious material were mainly calcite and Mg-calcite, and the morphology of pre- cipitated minerals appeared mainly cauliflower shape. However, the magnesium additive concentration is higher, the minerals were mainly monohydrocalcite and hydromagnesite, and the morphology was mainly ball cylindrical.关键词
微生物水泥基材料/镁添加剂/镁-方解石/菱镁矿/单水碳钙石Key words
microbe eementitous material/magnesium additive/magnesium-calcite/hydromagnesite/monohydrocalcite分类
建筑与水利引用本文复制引用
荣辉,钱春香,李龙志..镁添加剂对微生物水泥基材料力学性能的影响[J].硅酸盐学报,2012,40(11):1564-1569,6.基金项目
国家自然科学基金 （）
教育部博士点基金（200900-92110029）：江苏省普通高校研究生科研创新计划（CXZZ_0145）和东南大学优秀博士学位论文基金（YBJJ1127）资助项目. （）
