碱激发锰渣矿渣胶凝材料的力学性能及水化过程研究  

Research on the Mechanical Property and Hydration Process of Alkali-activated Manganese Slag and Slag Cementitious Materials

作　　者：宋旭艳[1] 杨末丽 韩静云[1] 郜志海[1] 

机构地区：[1]苏州科技学院土木工程学院,215011 [2]上海中技桩业股份有限公司,200434

出　　处：《混凝土与水泥制品》2010年第3期9-12,共4页China Concrete and Cement Products

基　　金：国家"十一五"科技支撑计划合作项目(Z1201);苏州科技学院科研基金指令性项目

摘　　要：利用基于水玻璃形成的复合碱组分SN和少量硅酸盐水泥共同激发锰渣-矿渣体系,制备出碱激发胶凝材料,并对该胶凝材料的力学性能及水化过程进行了探讨。结果表明:水化3～7d内是该碱激发胶凝材料中锰渣与矿渣的适应性由劣向好转变的关键。水化初期(3d前),随着矿渣替代锰渣量增加,碱激发胶凝材料中生成水化产物的程度变慢,抗压强度降低;水化7d后,碱激发锰渣-矿渣胶凝材料中随着矿渣替代量的增加,石英(SiO2)被剥蚀解体量增多,体系的溶解-聚合程度逐渐提高,水化产物逐渐增多,化学结合水量逐渐增大,抗压强度逐渐提高。With manganese slag and slag activated by compound alkali based on water glass and a little cement,alkali-activated cementitious materials can be made.And the mechanical property and hydration process of alkali-activated manganese slag and slag cementitious materials are studied.The results show that： at hydration age of 3d^7d,the adaptability of manganese slag and slag in alkali-activated cementitious materials can change from the poor to the better.With the percentage of slag increasing,which is instead of manganese slag in alkali-activated cementitious materials,at early age of hydration（before 3d）,more slowly the degree of hydration products generated may be and the lower compressive strength can be.After 7d,disintegration and erosion of quartz act greatly,and the degree of solution and combination in the system can gradually increase,and hydration products can be on the increase,and the amount of chemically combined water can increase gradually,and compressive strength of alkali-activated manganese slag and slag cementitious materials can gradually rise.

关 键 词：锰渣 碱激发 力学强度 化学结合水量 水化过程 

分 类 号：TQ172.72[化学工程—水泥工业]