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氯盐对碱激发矿渣净浆强度影响试验

程寅 黄新

程寅, 黄新. 氯盐对碱激发矿渣净浆强度影响试验[J]. 北京航空航天大学学报, 2015, 41(4): 693-700. doi: 10.13700/j.bh.1001-5965.2015.0072
引用本文: 程寅, 黄新. 氯盐对碱激发矿渣净浆强度影响试验[J]. 北京航空航天大学学报, 2015, 41(4): 693-700. doi: 10.13700/j.bh.1001-5965.2015.0072
CHENG Yin, HUANG Xin. Experiment of chloride effect on strength of alkali-activated slag paste[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(4): 693-700. doi: 10.13700/j.bh.1001-5965.2015.0072(in Chinese)
Citation: CHENG Yin, HUANG Xin. Experiment of chloride effect on strength of alkali-activated slag paste[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(4): 693-700. doi: 10.13700/j.bh.1001-5965.2015.0072(in Chinese)

氯盐对碱激发矿渣净浆强度影响试验

doi: 10.13700/j.bh.1001-5965.2015.0072
基金项目: 国家自然科学基金资助项目(50278007)
详细信息
    作者简介:

    程寅(1984—),男 ,浙江衢州人,博士生,306876662@qq.com

    通讯作者:

    黄新(1956—),男,北京人,教授,hx2000@buaa.edu.cn,主要研究方向为岩土工程化学与软土固化技术、软土地基处理原理预技术、水泥基复合材料.

  • 中图分类号: TU528.2

Experiment of chloride effect on strength of alkali-activated slag paste

  • 摘要: 通过对掺加氯化钠(NaCl)、氯化钙(CaCl2)的碱激发矿渣(KC)净浆的无侧限抗压强度试验,研究两种氯盐对KC净浆强度的影响规律,利用X射线衍射(XRD)、热重分析(TG-DTG)、液相离子测定、水化程度测定等测试手段,分析两种氯盐对KC净浆强度的作用机理.结果表明,随着NaCl掺量增加,KC净浆抗压强度提高;随着CaCl2掺量增加,KC净浆抗压强度基本不变.掺加NaCl与CaCl2的KC净浆中均生成含氯水化物水化氯铝酸钙(Fs,Friedel's salt),但Fs的生成对KC净浆强度无影响作用.掺加NaCl的KC净浆中氢氧化钠(NaOH)的生成是导致其强度增强的主要原因,混合物中NaOH的存在提高了KC净浆的液相碱度,促进矿渣水化的进一步发生,进而生成更多的水化硅酸钙(CSH)使KC净浆强度得到提高.

     

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出版历程
  • 收稿日期:  2015-02-03
  • 修回日期:  2015-03-01
  • 网络出版日期:  2015-04-20

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