建筑垃圾再生料在路基工程中的应用综述

将建筑垃圾再生料用于道路工程建设，是发展绿色低碳交通的具体举措。然而由于再生料成分复杂，在荷载和温度湿度等外界环境的作用下，易发生颗粒破碎，导致再生料的性能不稳定。因此，再生料路基与传统路基也存在明显差异。从建筑垃圾再生料用于路基修筑时的物理力学性能，再生料路基典型工程应用，再生料路基的环保性和经济性等三方面对现有研究成果进行了回顾和梳理。发现目前关于再生料路基的服役性能预估及调控的研究还比较匮乏，少有路基体中污染物对周边环境的影响分析，建议开展此类研究，以便于推进建筑垃圾在路基工程中更为广泛和安全可靠的应用。

Application of Recycled Aggregates from Construction and Demoliton Waste in Subgrade Engineering: A Review

Recycling construction and demolition waste (CDW) into subgrade fillers is an effective way to develop green and low-carbon transportation. Because the composition of CDW is complicated with significant variability, under the action of an external load, temperature, and humidity, particle breakage occurs easily in CDW recycled aggregates, making the properties of CDW unstable. Thus, CDW subgrades differ significantly from traditional subgrades. This study mainly reviews existing research results from the following scopes:basic properties of CDW recycled aggregates used as subgrade fillers, typical CDW subgrade engineering projects, and the environmental impact and economics of CDW subgrades. Little research has been conducted on the prediction and control of the durability of the CDW subgrade, and the analysis of the influence of pollutants in CDW subgrades on the surrounding environment is limited. More such studies should be carried out to accelerate safe and wide use of CDW subgrade engineering.