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硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (8): 2782-2793.DOI: 10.16552/j.cnki.issn1001-1625.2026.0154

• 资源综合利用 • 上一篇    下一篇

钼尾矿生态型超高性能混凝土性能及综合效益研究

冯俊杰1,2(), 李毅霄1, 马艳3, 耿圣涵4, 申星月1, 严少洋1,2, 王新武1,4(), 刘琦1,2()   

  1. 1.洛阳理工学院智能建造与土木工程学院,洛阳 471023
    2.洛阳理工学院河南省绿色建筑材料制造与智能装备重点实验室,洛阳 471023
    3.洛阳市政建设集团有限公司,洛阳 471023
    4.河南科技大学土木建筑学院,洛阳 471023
  • 收稿日期:2026-02-13 修订日期:2026-03-23 出版日期:2026-08-15 发布日期:2026-09-01
  • 通信作者: 王新武,博士,教授。E-mail:lywxw518@163.com
    刘琦,博士,讲师。E-mail:liuqi@lit.edu.cn
  • 作者简介:冯俊杰(1987—),男,博士,讲师。主要从事绿色混凝土材料的研究。E-mail:junjiefeng@lit.edu.cn
  • 基金资助:
    国家自然科学基金(12402430);河南省自然科学基金(242300420350);河南省科技攻关项目(252102321151);河南省高等学校重点科研项目计划(25A560020);河南省高等学校重点科研项目计划(26A410008);河南省高等学校重点科研项目计划(26B410003);河南省大学生创新创业训练计划(202411070016);西安市城镇低碳建设重点实验室(长安大学)开放基金资助(300102285505);洛阳市科技计划项目(2401051B);洛阳理工学院教育教学改革研究项目(2025JYZD-09)

Performance and Comprehensive Benefit of Eco-Friendly Ultra-High Performance Concrete with Molybdenum Tailings

FENG Junjie1,2(), LI Yixiao1, MA Yan3, GENG Shenghan4, SHEN Xingyue1, YAN Shaoyang1,2, WANG Xinwu1,4(), LIU Qi1,2()   

  1. 1.School of Intelligent Construction and Civil Engineering,Luoyang Institute of Science and Technology,Luoyang 471023,China
    2.Henan Key Laboratory of Green Building Materials Manufacturing and Intelligent Equipment,Luoyang Institute of Science and Technology,Luoyang 471023,China
    3.Luoyang Municipal Group Corporation Co. ,Ltd. ,Luoyang 471023,China
    4.School of Civil and Architecture,Henan University of Science and Technology,Luoyang 471023,China
  • Received:2026-02-13 Revised:2026-03-23 Published:2026-08-15 Online:2026-09-01

摘要:

针对超高性能混凝土(UHPC)生产过程中存在的高碳排放和高能耗问题,提出钼尾矿粉-砂协同利用策略,旨在实现钼尾矿全组分高值化利用。基于颗粒最紧密堆积理论和湿堆积密度法优化配合比,采用机械活化钼尾矿粉替代胶凝材料、钼尾矿砂替代石英砂,制备钼尾矿生态型UHPC,并探究其性能与综合效益。结果表明,单掺钼尾矿粉不超过30%(质量分数)或钼尾矿砂不超过75%(质量分数)时,UHPC兼具良好的工作性能、较高的抗压强度和致密的孔结构。当复掺20%(质量分数)钼尾矿粉与75%(质量分数)钼尾矿砂时,生态型UHPC坍落扩展度为585 mm,满足施工流动性要求;抗压强度为154.8 MPa,较基准组(未掺钼尾矿)提高3.1%;钼尾矿资源化利用率达48.8%;单位体积单位强度下的碳排放、能耗和成本较基准组分别降低17.5%、14.9%和30.6%。研究结果可为UHPC低碳制备与钼尾矿高值化转化提供参考。

关键词: 钼尾矿, 超高性能混凝土, 工作性能, 力学性能, 孔结构, 综合效益

Abstract:

To address the prominent issues of high carbon emissions and high energy consumption in the production of ultra-high performance concrete (UHPC), this study proposed a synergistic utilization strategy for molybdenum tailings powder and sand, aiming to realize the high-value utilization of all components of molybdenum tailings. The mix proportion of UHPC was optimized based on the particle closest packing theory and wet packing density method. Eco-friendly UHPC was prepared by substituting cementitious materials with mechanically activated molybdenum tailings powder and quartz sand with molybdenum tailings sand, and the performance and comprehensive benefit of UHPC were studied. The results indicate that UHPC exhibits favorable workability, high compressive strength and a dense pore structure when the replacement rate of molybdenum tailings powder is no more than 30% (mass fraction) or that of molybdenum tailings sand is no more than 75% (mass fraction). The eco-friendly UHPC prepared with 20% (mass fraction) molybdenum tailings powder and 75% (mass fraction) molybdenum tailings sand exhibits a slump flow of 585 mm, meeting the workability requirements for construction. Its compressive strength reaches 154.8 MPa, an increase of 3.1% compared with that of the reference group (without molybdenum tailings). The resource utilization rate of molybdenum tailings attains 48.8%, and the carbon emissions, energy consumption and material costs per unit strength per unit volume are reduced by 17.5%, 14.9% and 30.6% respectively relative to the reference group. This study provides references for the low-carbon preparation of UHPC and the high-value conversion of molybdenum tailings.

Key words: molybdenum tailing, ultra-high performance concrete (UHPC), workability, mechanical property, pore structure, comprehensive benefit

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