硫铝酸盐水泥-铝酸盐水泥-石膏三元复合体系配制超早强材料的研究.pdf

学兔兔 2013年第 7期 (总第 285期 ) 混 凝 土 理 论 研 究 Number 7 in 2013(Total No．285) Concrete THEORETICAL RESEARCH 硫铝酸盐水泥一铝酸盐水泥一石膏三元复合体系 配制超早强材料的研究 李宪军，毕兴锁，王芳芳 (山西省建筑科学研究院，山西 太原 030001) 摘 要：首次选用硫铝酸盐水泥一铝酸盐水泥一石膏三元复合体系辅以多种助剂成功研制出高性能超早强材料。对不同胶砂比 的五个配合比进行了较系统的研究，同时分析了高胶砂比配合比的微观结构。结果表明：该体系辅以多种助剂采用高胶砂比可以 配制出2h抗压强度达42．6MPa，28d抗压强度达92．3MPa，24h抗折强度达14．8MPa的超早强材料，后期强度不倒缩，90d抗压强 度达104．6MPa，且具有自身微膨胀功能；该体系后期SEM微观结构显示晶形生长完好、结构致密。 关键词：三元复合体系；高性能；超早强；晶体结构 中图分类号：TU528．01 文献标志码：A 文章编号： 1002—3550(20l3)07—0004—03 Study of super high．-early--strength grouting material mixed with ternary complex system of sulphoaluminate cement-aluminate cement-gypsum LIXianjun，BIXingsuo，WANGFangfang (ShanxiAcademyofBuildingResearch，Taiyuan030001，China) Abstract： Super high—early—s~ength grouting material was first produced using ternary complex system of sulphoaluminate cement，alu— minate cement and gypsum．The promoter action，formation mechanism and feasibility of early s~ength procoagulant component on the system were systematically studied from macroscopic and microscopic respects．The results showed that early strength procoagulant compo‘ nent played a key role in the temary complex system of sulphoaluminate cement，aluminate cement and gypsum，and early strength compo— nent acts as auxiliary promoter action．Super hi 一early—strength material suitable for different engineering needs could be made with the addtion of a variety of additives．The successful application of the system would expand t