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机制砂的粉体需水量指数及其应用

WU Wenzhen SUN Jiangtao LI Zhitang SHANG Yixin ZHANG Wentao XU Wei SHEN Weiguo

硅酸盐通报2025，Vol.44Issue(12)：4368-4374,7.
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硅酸盐通报2025，Vol.44Issue(12)：4368-4374,7.DOI:10.16552/j.cnki.issn1001-1625.2025.0529

机制砂的粉体需水量指数及其应用

Powder Water Demand Index and Its Application of Manufactured Sand

WU Wenzhen 1SUN Jiangtao 1LI Zhitang 1SHANG Yixin 2ZHANG Wentao 1XU Wei 1SHEN Weiguo3

作者信息

  • 1. Poly Changda Engineering Co.,Ltd.,Guangzhou 545000,China
  • 2. School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China||State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China
  • 3. School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China||State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China||Xiangyang Key Laboratory of Comprehensive Utilization of Massive Solid Waste and Green Building Materials,Xiangyang 441022,China
  • 折叠

摘要

Abstract

In order to evaluate the water demand of powder in manufactured sand(MS)quantitatively,a powder water demand index(WDI)as well as its measurement and calculation method was proposed.The influence factors of the WDI of manufactured sand powder were explored,and the relationship between WDI and the workability and mechanical properties of concrete was investigated.The results indicate that the workability and mechanical properties of concrete decrease with the increase of WDI.The correlation coefficient between WDI and slump flow is 0.86,and the correlation coefficient between WDI and compressive strength is 0.88,indicating a good correlation.The manufactured sand mixed with different clay minerals has higher correlation between WDI and concrete workability,while the correlation with strength is slightly lower,therefore,the significant correlation between WDI of MS and MS concrete performance indicate WDI can be used as a classification indicator.Finally,the limitations and improvement technical routs of WDI formula are proposed.

关键词

机制砂/粉体/需水量指数/混凝土性能/相关系数

Key words

manufactured sand/powder/water demand index/concrete performance/correlation coefficient

分类

建筑与水利

引用本文复制引用

WU Wenzhen,SUN Jiangtao,LI Zhitang,SHANG Yixin,ZHANG Wentao,XU Wei,SHEN Weiguo..机制砂的粉体需水量指数及其应用[J].硅酸盐通报,2025,44(12):4368-4374,7.

基金项目

保利长大有限公司科技项目(202401hx0141) （202401hx0141）

"十三五"国家重点研发计划课题(2016YFB0303603) （2016YFB0303603）

硅酸盐通报

OA北大核心

1001-1625

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