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固废砂粉再生混凝土力学及耐久性能影响因素

Effect of mechanics and durability of recycled concrete with solid waste sand powder

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建筑垃圾如混凝土、玻璃和钢材等主要成分已有具体的回收方案,但再生利用过程中作为主要副产物的固废砂粉缺乏有效的回收利用途径.以量大面广的混凝土粉和废弃砖粉为对象,综述了固废砂粉物理、化学性质等因素对再生混凝土力学及耐久性能的影响.结果表明:固废砂粉颗粒的水化反应活性主要受微粉自身特性和配比设计控制;混凝土的水胶比、砂粉的置换比、再生微粉粒径、细度等参数显著影响着再生混凝土的力学及耐久性能.
A proposal has been put forward for a recycling scheme aimed at reusing the main components of construction waste,including concrete,glass,and steel.However,an effective method for recycling solid waste sand powder,which is the primary by-product in this process,is currently lacking.This paper provides a comprehensive review of the impact of physical and chemical properties of solid waste sand powder on both mechanical and durability aspects of recycled concrete.The results indicate:The hydration reaction activity of solid waste sand powder is mainly controlled by the characteristics and proportion design of micro-powder,and the water-binder ratio of concrete,the replacement ratio of sand powder,particle size and fineness of recycled fine powder significantly affect the mechanics and durability of recycled concrete.

construction wastesolid waste sand powderrecycled concretemechanical propertiesdurability

曹瑞雪

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中铁四局集团建筑工程有限公司,安徽 合肥 230031

建筑垃圾 固废砂粉 再生混凝土 力学性能 耐久性能

2025

山西建筑
山西省建筑科学研究院

山西建筑

影响因子:0.714
ISSN:1009-6825
年,卷(期):2025.51(3)