建筑垃圾再生骨料强化研究综述

A Review of Strengthening Research on Recycled Aggregate of Construction and Demolition Debris

建筑物的拆除、建设等过程均会产生大量的建筑垃圾,将其加工为再生骨料循环用于工程建设中,对于环境保护和资源综合利用均具有重要的意义。但再生骨料存在表观密度低、吸水率和压碎值高等性能缺陷,严重阻碍了再生骨料的推广应用。砂浆分离和砂浆增强是目前最常用的再生骨料性能提升手段。为更好地理解再生骨料强化技术,围绕砂浆分离和砂浆增强两方面分别介绍了常见的强化方法,并对比了各方法的优缺点。相关结论将为今后再生骨料的强化研究提供参考。

The process of demolition and construction of buildings would produce a large amount of construction and demolition debris.processing the construction and demolition debris into recycled aggregates for engineering construction is of great significance to environmental protection and comprehensive utilization of resources.However,recycled aggregates have some performance defects such as low apparent density,high water absorption and high crushing value,which seriously hinder the wide use of recycled aggregates.Mortar separation and mortar reinforcement are currently the most commonly used measures to improve the performance of recycled aggregates.In order to better understand the strengthening techniques of recycled aggregates,the common strengthening methods around mortar separation and mortar enhancement were introduced in this research,and the advantages and disadvantages of each method were compared.The relevant conclusions would provide a reference for future research on the strengthening of recycled aggregates.