CRTS III型轨道填充层自密实混凝土砂率的研究
CRTS III형궤도전충층자밀실혼응토사솔적연구
Research on sand ratio of SCC in CRTS III type track system
  • 万方数据
    中国建材科技 중국건재과기
    CHINA BUILDING MATERIALS SCIENCE & TECHNOLOGY
    2012年 5期 52-55 ,共4页

    顾海朋%李固华%曾晓辉%程健强

    고해붕%리고화%증효휘%정건강

    自密实混凝土%填充层%砂率 自密實混凝土%填充層%砂率
    자밀실혼응토%전충층%사솔
    SCC%the packing layer%sand ratio
    自密实混凝土(SCC)作为填充层已经运用在CRTSIII型轨道中,但是在使用过程中其工作性能还不能完全达到要求,尤其是它的工作性.本文通过不同砂率下自密实混凝土的拌合试验,主要研究了砂率对其工作性的影响.试验结果表明,当砂率太小时,自密实混凝土的工作性很差,而且会出现离析和泌水现象;而当砂率太大时,混凝土的工作性也不好,但是不会产生离析.砂率的最佳范围为0.56到0.58之间.
    자밀실혼응토(SCC)작위전충층이경운용재CRTSIII형궤도중,단시재사용과정중기공작성능환불능완전체도요구,우기시타적공작성.본문통과불동사솔하자밀실혼응토적반합시험,주요연구료사솔대기공작성적영향.시험결과표명,당사솔태소시,자밀실혼응토적공작성흔차,이차회출현리석화비수현상;이당사솔태대시,혼응토적공작성야불호,단시불회산생리석.사솔적최가범위위0.56도0.58지간.
    @@@@Self-compacting concrete (SCC) has been used in CRTS (China Railway Track System) III type track, but its performances especially the workability can’t meet all requirements in the usage of SCC yet.This paper primary researched the influence of sand ratio on its performance through preparing SCC of different sand ratio.Test results show that when sand ratio is too small,the fluidity of SCC will be bad and the concrete will generate segregation and weeping.If sand ratio is too great, the workability of SCC will not be good either,but segregation will not occur again.The optimum range of sand ratio is 0.56 to 0.58.
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