土壤固化应用中废弃混凝土再生微粉的研究进展  

Research progress of recycled micro-powder from waste concrete in soil curing application

作　　者：陈炳旭 曹万智[1,2] 刘东升 刘赟 吕龙 郭浩翔 CHEN Bingxu;CAO Wanzhi;LIU Dongsheng;LIU Yun;LYU Long;GUO Haoxiang(College of Civil Engineering,Northwest University for Nationalities,Lanzhou 730124,China;Key Laboratory of Green Engineering Materials and Low-carbon Construction,Lanzhou 730124,China)

机构地区：[1]西北民族大学土木工程学院,甘肃兰州730124 [2]甘肃省绿色工程材料与低碳建造重点实验室,甘肃兰州730124

出　　处：《新型建筑材料》2025年第4期115-120,共6页New Building Materials

基　　金：中央高校双碳技术创新研究专项(31920240056);甘肃省教育厅高校科研创新平台重大培育项目(2024CXPT-19);西北民族大学引进人才科研项目(xbmuyjrc2023019);中央高校基本科研业务费专项资金资助项目(31920240127)。

摘　　要：废弃混凝土经破碎、球磨、筛分可制得再生骨料,但在上述过程中会产生大量再生微粉。再生微粉主要由老旧水泥石组成,经机械研磨、煅烧或化学激发,具有一定的胶凝性。因此,再生微粉可以单掺或与水泥复掺以替代或部分替代水泥用于土壤固化。研究了再生微粉在固化土与低强度填筑土中的应用,梳理了其对力学性能及耐久性的影响,以期为废弃混凝土再生微粉在固化土与填筑土中的资源化利用提供参考。Waste concrete can be transformed into recycled aggregate through processes such as crushing,ball milling,and screening.However,these processes generate a significant amount of recycled micro-powder.This micro-powder primarily consists of old cement stones that,when mechanically ground,calcined,or chemically stimulated,exhibit certain cementitious properties.Conse原quently,recycled micro-powder can be utilized either on its own or in combination with cement to replace,or partially replace,ce原ment in soil curing applications.This paper explores the application of recycled micro-powder in cured soil and low-strength filler soil,examining the changes in mechanical properties and durability.The aim is to provide insights that can inform the resourceful utilization of recycled micro-powder derived from waste concrete in the context of cured soil and filler soil.

关 键 词：废弃混凝土 再生微粉 机械研磨 热活化 化学激发 

分 类 号：TU528[建筑科学—建筑技术科学]