硅酸盐通报2026，Vol.45Issue(8)：2782-2793,12.DOI:10.16552/j.cnki.issn1001-1625.2026.0154
钼尾矿生态型超高性能混凝土性能及综合效益研究
Performance and Comprehensive Benefit of Eco-Friendly Ultra-High Performance Concrete with Molybdenum Tailings
摘要
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.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Key words
molybdenum tailing/ultra-high performance concrete(UHPC)/workability/mechanical property/pore structure/comprehensive benefit分类
建筑与水利引用本文复制引用
冯俊杰,李毅霄,马艳,耿圣涵,申星月,严少洋,王新武,刘琦..钼尾矿生态型超高性能混凝土性能及综合效益研究[J].硅酸盐通报,2026,45(8):2782-2793,12.基金项目
国家自然科学基金(12402430) （12402430）
河南省自然科学基金(242300420350) （242300420350）
河南省科技攻关项目(252102321151) （252102321151）
河南省高等学校重点科研项目计划(25A560020,26A410008,26B410003) （25A560020,26A410008,26B410003）
河南省大学生创新创业训练计划(202411070016) （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) （长安大学）
洛阳市科技计划项目(2401051B) （2401051B）
洛阳理工学院教育教学改革研究项目(2025JYZD-09) （2025JYZD-09）
