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硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (1): 202-211.DOI: 10.16552/j.cnki.issn1001-1625.2025.0738

• 资源综合利用 • 上一篇    下一篇

细粒式磷渣在公路基层中的应用研究

蔡银1,2(), 李睿1(), 包天鹏1,2   

  1. 1.昆明理工大学建筑工程学院土木工程系,昆明 650500
    2.云南省交发咨询有限公司,昆明 650000
  • 收稿日期:2025-07-25 修订日期:2025-09-09 出版日期:2026-01-20 发布日期:2026-02-10
  • 通信作者: 李 睿,博士,教授。E-mail:liruiking@kust.edu.cn
  • 作者简介:蔡 银(1998—),男,硕士研究生。主要从事桥梁设计与加固、道路材料开发与应用的研究。E-mail:20232210047@stu.kust.edu.cn
  • 基金资助:
    云南建投路面工程有限公司(路面工程事业部)科技计划项目(YNJT-LM-KT202402)

Application of Fine-Grained Phosphorus Slag in Highway Base

CAI Yin1,2(), LI Rui1(), BAO Tianpeng1,2   

  1. 1. Department of Civil Engineering,Faculty of Civil Engineering and Mechanics,Kunming University of Science and Technology,Kunming 650500,China
    2. Yunnan Jiaofa Consulting Co. ,Ltd. ,Kunming 650000,China
  • Received:2025-07-25 Revised:2025-09-09 Published:2026-01-20 Online:2026-02-10

摘要:

为了推进磷渣的高值化利用,改善公路基层的力学性能与路用性能,本文以细粒式磷渣替代部分碎石集料制备公路基层混合料,全面分析了混合料的无侧限抗压强度、抗压回弹模量、水稳定性及抗裂性能的影响因素。结果表明,水泥剂量、磷渣掺量、养护龄期对混合料的无侧限抗压强度与抗压回弹模量具有显著影响,混合料的无侧限抗压强度、抗压回弹模量均随磷渣掺量的提高而有所减小。混合料的水稳定性随着磷渣掺量的提高先增加后降低,当磷渣掺量为25%(质量分数)时,混合料的水稳系数达到93%。与未掺磷渣的对照组相比,随着磷渣掺量的提高,试件早期干缩应变与干缩系数较大,但后期干缩应变与干缩系数较小,混合料的抗裂性能有所改善。对磷渣在云南省某二级公路进行了公路基层材料的工程应用,公路的检测合格率为100%,验证了磷渣在公路基层材料中应用的可行性。

关键词: 公路基层, 磷渣掺量, 水稳定性, 抗裂性能, 工程应用

Abstract:

To promote the high-value utilization of phosphorus slag, improve the mechanical properties and road performance of highway base, this paper used fine-grained phosphorus slag to replace part of the gravel aggregate to prepare a highway base mixture. The factors affecting the unconfined compressive strength, compressive resilient modulus, water stability, and crack resistance of the mixture were comprehensively analyzed. The results show that the cement dosage, phosphorus slag dosage, and curing age have a significant effect on the unconfined compressive strength and compressive resilient modulus of the mixture. The unconfined compressive strength and compressive resilient modulus of the mixture decrease with the increase of phosphorus slag dosage. The water stability of the mixture increases first and then decreases with the increase of phosphorus slag dosage. When the phosphorus slag dosage is 25% (mass fraction), the water stability coefficient of the mixture reaches 93%. Compared with the control group without phosphorus slag, with the increase of phosphorus slag dosage, the early dry shrinkage strain and dry shrinkage coefficient of the specimens are larger, but the later dry shrinkage strain and dry shrinkage coefficient are smaller, which improves the crack resistance of the mixture. The engineering application of phosphorus slag in the highway base material of a secondary road in Yunnan Province was carried out. The qualified rate of the highway is 100%, which verifies the feasibility of the application of phosphorus slag in the highway base material.

Key words: highway base, phosphorus slag dosage, water stability, crack resistance, engineering application

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