欢迎访问《硅酸盐通报》官方网站,今天是

硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (4): 1248-1255.DOI: 10.16552/j.cnki.issn1001-1625.2025.0878

• 资源综合利用 • 上一篇    下一篇

黄河细砂对泡沫轻质土性能的影响

韩磊1(), 曹红星1, 任家芳1, 郭志翔2,3, 宋普涛2,3(), 王晶2,3, 冷发光2,3   

  1. 1.聊城市交通发展有限公司,聊城 252000
    2.中国建筑科学研究院有限公司,北京 100013
    3.建研建材有限公司,北京 100013
  • 收稿日期:2025-09-01 修订日期:2025-10-21 出版日期:2026-04-20 发布日期:2026-05-14
  • 通信作者: 宋普涛,正高级工程师。E-mail:song-pu-tao@163.com
  • 作者简介:韩磊(1979—),男,高级工程师。主要从事公路桥梁施工管理工作。E-mail:761036154@qq.com
  • 基金资助:
    “十四五”国家重点研发计划课题(2023YFC3807305);山东省企业技术创新项目(202361400028)

Influence of Yellow River Fine Sand on Performance of Foamed Lightweight Soil

HAN Lei1(), CAO Hongxing1, REN Jiafang1, GUO Zhixiang2,3, SONG Putao2,3(), WANG Jing2,3, LENG Faguang2,3   

  1. 1.Liaocheng Traffic Development Co. ,Ltd. ,Liaocheng 252000,China
    2.China Academy of Building Research Co. ,Ltd. ,Beijing 100013,China
    3.CABR Institute of Building Materials Co. ,Ltd. ,Beijing 100013,China
  • Received:2025-09-01 Revised:2025-10-21 Published:2026-04-20 Online:2026-05-14

摘要:

黄河中下游流域存在丰富的黄河细砂资源,将其作为细骨料配制泡沫轻质土,可在一定程度上缓解河道淤积问题。本文通过流动度、湿密度、抗压强度、收缩性能、吸水率、X射线衍射分析和扫描电子显微镜等性能测试,系统研究了不同掺量的黄河细砂对泡沫轻质土宏观性能、水化产物和微观结构的影响。结果表明:20%(质量分数)掺量的黄河细砂可以起到微集料效应,提高泡沫轻质土的力学性能并降低吸水率;当黄河细砂掺量继续增加时,大量矿物掺合料被替代导致火山灰反应减弱,C-S-H凝胶等水化产物减少,同时孔隙数量增多、孔径细化,微观结构逐渐趋于疏松,导致泡沫轻质土性能变差;此外,黄河细砂可发挥骨架抑制作用,泡沫轻质土自收缩率随着黄河细砂掺量增加而逐渐减小。

关键词: 黄河细砂, 泡沫轻质土, 自收缩率, 微集料效应, 宏观性能, 微观结构

Abstract:

The middle and lower reaches of the Yellow River basin possess abundant Yellow River fine sand resources.Using it as fine aggregate to prepare foamed lightweight soil can alleviate the problem of river channel siltation to a certain extent. This paper systematically studied the effects of different content of Yellow River fine sand on the macroscopic properties, hydration products, and microstructure of foamed lightweight soil through performance tests including fluidity, wet density, compressive strength, shrinkage performance, water absorption rate, X-ray diffraction analysis, and scanning electron microscopy. The results show that 20% (mass fraction) content of Yellow River fine sand can exert a micro-aggregate effect, improving the mechanical properties of foamed lightweight soil and reducing water absorption rate. When the content of Yellow River fine sand continues to increase, a large content of mineral admixtures are replaced, leading to a weakened pozzolanic reaction, a decrease in hydration products such as C-S-H gel, the number of pores increases and pore sizes refine. The microstructure gradually tends to become loose, and the performance of foamed lightweight soil deteriorates. In addition, Yellow River fine sand can act as a skeleton inhibition role, and the self-shrinkage rate of foamed lightweight soil gradually decreases with the increase of Yellow River fine sand content.

Key words: Yellow River fine sand, foamed lightweight soil, self shrinkage rate, micro-aggregate effect, macroscopic property, microstructure

中图分类号: