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Effect of Metakaolin on the Physical Properties and Setting Time of High Performance Concrete

机译：偏高岭土对高性能混凝土物理性能和凝固时间的影响

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摘要

Kaolin native to Jilin Province was calcined at the constant temperature of 750℃ for 4 hours to obtain the high pozzolanic metakaolin(A_(12)Si_2O_7). The effects of metakaolin (MK) on the static flow expansion of cement paste and the workability and setting time of concrete were studied with the content of 0, 5%, 10% and 15% by weight of cementitious material. The test results show that: when the dosage of superplasticizer is 2% by weight of cementitious material, the setting time of concrete shortens obviously and the slump and expansion decrease with the raising of MK content. When 5% of cement is replaced by MK, the setting time of concrete shortens by 5%; the slump and the slump flow decrease by 5.5% and 4.4% respectively.
机译：将原产于吉林省的高岭土在750℃的恒温下煅烧4小时，得到高火山灰偏高岭土（A_（12）Si_2O_7）。研究了含量为0、5％，10％和15％（按胶凝材料计）的偏高岭土（MK）对水泥浆静流动膨胀以及混凝土的可加工性和凝结时间的影响。试验结果表明：当高效减水剂的用量为胶结材料的2％（重量）时，随着MK含量的增加，混凝土的凝结时间明显缩短，坍落度和膨胀率降低。当用MK代替5％的水泥时，凝结时间缩短了5％；坍落度和坍落度流量分别减少了5.5％和4.4％。

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  • 来源
  • 会议地点 Shanghai(CN)
  • 作者

    Baomin Wang; Hainan Ma; Ming Li; Yu Han;

  • 作者单位

    Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024 China;

    Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024 China;

    Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024 China;

    Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024 China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Kaolin; Metakaolin; Workability; Setting time;

    机译：高岭土;偏高岭土;可加工性；设定时间;

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