特种水泥与石膏复合体系关键技术的研究.pdfVIP

学兔兔 中国科技核心期刊 斩 建赡 特种水泥与石膏复合体系关键技术的研究 毕兴锁，李宪军，王芳芳 (山西省建筑科学研究院，山西 太原 030001) 摘要：首次提出以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灌浆材料，并从宏观、微观两方面较系统地研究 了早强促凝组分对该体系的促进作用、形成机理和可行性。结果表明：早强促凝组分对该体系起关键促进作用，早强组分起辅助作 用；在早强促凝组分的促进作用下，该体系浆体2h抗压强度可达33．2MPa、抗折强度可达 11．0MPa，后期强度稳步增长；经实践该 体系辅以多种助剂和石英砂可配制出2h抗压强度达40MPa以上的超早强材料。该体系的成功应用拓展了超早强材料的使用范 围。 关键词：硫铝酸盐水泥；铝酸盐水泥；石膏：三元复合体系；早强促凝；超早强 中图分类号：TQ177 文献标识码：B 文章编号：1001—702X(2013)05—0058—04 Study ofkey technique in thecomplex system ofspecialcementand gypsum BlXingsuo，LIXianjun，WANGFangfang (ShanxiAcademyofBuildingResearch，Taiyuan030001，Shanxi，China) Abstract：Superhigh-early-strengthgroutingmaterialwasfirstproducedusingternarycomplexsystem of sulphoaluminatece— ment，aluminatecementandgypsum．Thepromoteraction，formationmechanism andfeasibilityoferaly strength procoagulantcom— ponenton the system were systematically studied from macroscopic nad microscopic respects．Th e results show thateraly strength procoagulantcomponentanderalystrengthcomponentrespectivelyplaykeypromoternadauxiliary roleon thesystem．Thecom— pressive strength of2h isup to 33．2MPa，fracture strength reaches 11．0MPa，and the late strength steadily increasesunderthe promoteraction of eralystrengthprocoagulantcomponent．Superhigh—eraly—strengthmaterialcallbeproducedbyaddingavariety ofadditivesandquartzsnad，and thecompressive strength of2h can reachmorethna 40MPa．Th esuccessfulapplication ofhte system willexpand theusernageofsuperhigh—eraly—strengthmateria1． Key words：sulphoaluminate cement；aluminate cement；gypsum；ternary complex system；eraly strength procoagulnat；super high—early—