C-F-S-H/PCE纳米晶核对矿粉水泥水化和力学性能的影响
作者:
作者单位:

武汉理工大学 硅酸盐建筑材料国家重点实验室,湖北 武汉 430070

作者简介:

秦子豪(1999—),男,甘肃金昌人,武汉理工大学硕士生. E-mail: 317523@whut.edu.cn

通讯作者:

胡传林(1985—),男,河南商丘人,武汉理工大学研究员,博士生导师,博士. E-mail: chuanlin@whut.edu.cn

中图分类号:

TU528.35

基金项目:

湖北省重点研发计划项目(2023BCB083);非金属材料创 新中心创新基金资助项目(2023TDA1-1)


Impact of C-F-S-H/PCE Nanocomposites on Hydration and Mechanical Properties of Slag Cement
Author:
Affiliation:

State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • | |
  • 文章评论
    摘要:

    研究了水化铁硅酸钙/聚羧酸减水剂(C-F-S-H/PCE)纳米晶核对矿粉水泥水化和力学性能的影响.采用力学性能测试、等温量热分析、X射线衍射仪和压汞法测试了大矿粉掺量(50%、70%、90%)矿粉水泥的抗压强度、水化放热、水化产物和孔隙率.结果表明:C-F-S-H/PCE纳米晶核的掺入能够显著提升矿粉水泥的抗压强度,50%矿粉掺量的矿粉水泥1 d强度提升60%;C-F-S-H/PCE纳米晶核对矿粉水泥的水化反应具有调控作用,通过加速水泥的早期水化及氢氧化钙的形成激发了矿粉反应活性,从而推动了矿粉反应的持续进行.

    Abstract:

    The influence of calcium-ferrite-silicate-hydrates/polycarboxylate ether (C-F-S-H/PCE) nanocomposites on the hydration and mechanical properties of slag cement were investigated. Various methods including mechanical property testing, isothermal calorimetry, X-ray diffraction, and mercury intrusion porosimeter were employed to investigate the compressive strength, hydration, and microstructure of the cement blended with large slag levels (50%, 70%, 90%). The results reveal that the C-F-S-H/PCE nanocomposites significantly enhance the compressive strength of slag cement. The 1 day compressive strength of slag cement with 50% slag content is increased by 60%. C-F-S-H/PCE nanocomposites have a regulatary effect on the hydration reaction of slag cement. By accelerating the early hydration of cement and the formation of calcium hydroxide, the reactivity of the slag is stimulated, thus promoting its continuous reaction.

    表 1 原材料的化学组成Table 1 Chemical compositions(by mass) of raw materials
    表 2 C-F-S-H/PCE纳米晶核配合比Table 2 Mix proportions of C-F-S-H/PCE nanocomposites
    图1 GGBFS的XRD图谱Fig.1 XRD pattern of GGBFS
    图2 试样1、3、28 d 抗压强度Fig.2 Compressive strength of samples at 1, 3, 28 d
    图3 试样72 h水化放热曲线及累计放热量曲线Fig.3 Hydration heat flow curves and cumulative heat release curves of samples within 72 h
    图4 1 d龄期时试样的XRD图谱Fig.4 XRD patterns of samples at 1 d
    图5 1 d龄期时试样中的CH含量Fig.5 Content of CH in samples at 1 d
    图6 1 d龄期时试样的累计孔径曲线及孔径分布曲线Fig.6 Cumulative aperture curves and pore size distribution curves of samples at 1 d
    表 3 试验配合比Table 3 Mix proportions of experiment
    参考文献
    相似文献
    引证文献
引用本文

秦子豪,董烨民,胡传林.C-F-S-H/PCE纳米晶核对矿粉水泥水化和力学性能的影响[J].建筑材料学报,2024,27(11):969-976

复制
分享
文章指标
  • 点击次数:156
  • 下载次数: 117
  • HTML阅读次数: 5
  • 引用次数: 0
历史
  • 收稿日期:2023-12-12
  • 最后修改日期:2024-04-01
  • 在线发布日期: 2024-12-10
文章二维码