无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ
环境·健康·安全

硅灰、偏高岭土对矿渣-粉煤灰微珠胶凝材料性能的影响

  • 刘应强 ,
  • 呙润华 ,
  • 刘喜杰
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  • 1.新疆大学建筑工程学院,新疆 乌鲁木齐 830000
    2.清华大学土木工程系
刘应强(1994— ),男,硕士,研究方向为道路结构及快速修补材料;E-mail:958442483@qq.com

收稿日期: 2021-08-31

  网络出版日期: 2022-06-22

基金资助

交通基础设施全自动数据采集及智能分析平台建设(20203910013)

Influence of silica fume and metakaolin on properties of slag?fly ash microbead cementitious materials

  • Yingqiang LIU ,
  • Runhua GUO ,
  • Xijie LIU
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  • 1.School of Civil Engineering, Xinjiang University, Urumqi 830000, China
    2.Department of Civil Engineering, Tsinghua University

Received date: 2021-08-31

  Online published: 2022-06-22

摘要

首先通过改变粉煤灰微珠掺量,确定满足快速修补要求的矿渣-粉煤灰微珠胶凝材料基体的最佳配比,再调节偏高岭土、硅灰掺量,研究其对复合胶凝材料凝结时间、力学性能和水化机理的影响。研究发现,偏高岭土对凝结时间的改变较硅灰更敏感。通过化学结合水测试,分析了不同硅灰和偏高岭土掺量对矿渣-粉煤灰微珠胶凝材料水化反应程度影响的原因。力学实验结果表明:矿渣-粉煤灰微珠胶凝基体复合掺加5%硅灰(质量分数)+15%偏高岭土(质量分数),试块2 h抗压强度为11.5 MPa、28 d抗压强度达到75.2 MPa,且呈现缓慢递增的趋势。

本文引用格式

刘应强 , 呙润华 , 刘喜杰 . 硅灰、偏高岭土对矿渣-粉煤灰微珠胶凝材料性能的影响[J]. 无机盐工业, 2022 , 54(6) : 102 -108 . DOI: 10.19964/j.issn.1006-4990.2021-0529

Abstract

Firstly,the optimum ratio of slag?fly ash microbead cementitious material matrix meeting the requirements of rapid repair was determined by changing the content of fly ash microbead,and then the content of metakaolin and silica fume was adjusted to study its influence on the setting time,mechanical properties and hydration mechanism of composite cementitious materials.It was found that metakaolin was more sensitive to the change of setting time than silica fume.The influence of different silica fume and metakaolin content on the hydration reaction degree of slag?fly ash microbead cementitious material was analyzed by chemical bound water test.The mechanical test results showed that the compressive strength of the test block was 11.5 MPa in 2 h and 75.2 MPa in 28 days with the composite of slag?fly ash microbead cementitious matrix and 5% silica fume(mass fraction)+15% metakaolin(mass fraction).

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