Use of building-related construction and demolition wastes in highway embankment: Laboratory and field evaluations
Use of building-related construction and demolition wastes in highway embankment: Laboratory and field evaluations
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公路路堤中与建筑相关的建筑和拆除废物的利用：实验室和现场评估
DOI：
10.1016/j.jclepro.2019.05.182
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发表时间：
2019-09
影响因子：
11.1
通讯作者：
Yuqing Zhang
中科院分区：
文献类型：
--
作者：
Junhui Zhang;Fan Gu;Yuqing Zhang
本文旨在评估回收的建筑相关的建筑和拆除（C&D）废物在公路路堤使用的可行性。首先，阐述了建筑和拆卸废物的回收利用，其中涉及手工和机械分类过程。根据其级配和阿太堡极限，将回收的C&D废物分类为优良的路堤材料。对回收的建筑废弃物进行了理化成分分析，其理化成分均符合国家标准DB 41/T 1193的要求。随后，进行了室内三轴试验，测定了再生建筑垃圾的回弹模量和永久变形。为了比较，一种类型的路堤粘土也在这项研究中进行了评估。三轴试验结果表明，再生建筑垃圾具有应力依赖性和湿度敏感性。现有的弹性模量和永久变形模型被发现能够准确地预测这些特性的回收材料。与路堤粘性土相比，再生建筑废弃物具有更高的回弹模量和更低的累积永久变形。这表明，再生垃圾替代粘土可以提高结构能力，减少车辙损伤。此外，与粘土相比，再生材料的回弹模量和永久变形的水分敏感性较小。这一特性将有利于在炎热和潮湿地区使用回收的建筑和拆卸废物。最后，在G95北京首都圈环线高速公路上进行了现场工程建设，100%利用再生建筑废弃物填筑路堤。路堤应用被发现使用更多的再生材料比其他潜在的应用，如沥青混合料，水泥混凝土，基层和底基层。本文还阐述了利用再生建筑垃圾修筑路堤的实践。采用轻量化弯沉仪原位测试路堤回弹模量。结果表明，再生建筑废弃物的结构承载力明显高于粘土。
This paper aimed at assessing the feasibility of using the recycled building-related construction and demolition (C&D) wastes in highway embankment. First, the recycling of C&D wastes was elaborated, which involved both the manual and mechanical sorting processes. The recycled C&D wastes were classified as an excellent embankment material according to their gradation and Atterberg limits. The physical and chemical composition of recycled C&D wastes were also investigated, which all met the requirements of DB 41/T 1193 in Chinese Standard. Subsequently, the laboratory triaxial tests were conducted to measure the resilient modulus and permanent deformation of recycled C&D wastes. For comparison, one type of embankment clay soil was also evaluated in this study. The triaxial test results indicated that the recycled C&D wastes exhibited stress-dependent and moisture-sensitive characteristics. The existing resilient modulus and permanent deformation models were found to be capable of accurately predicting these characteristics for recycled material. Compared to the embankment clay soil, the recycled C&D wastes had much higher resilient moduli and lower accumulated permanent deformation. This demonstrated that the substitution of recycled wastes for clay soil would improve the structural capacity and reduce rutting damage. Moreover, compared to the clay soil, the recycled material had less moisture sensitivity to resilient modulus and permanent deformation. This characteristic would be beneficial for use of recycled C&D waste in a hot and humid area. Finally, a field project was constructed on G95 Beijing Capital Area Loop Expressway, which utilized 100% recycled C&D wastes to fill embankment. The embankment application were found to utilize much more recycled materials than other potential applications such as asphalt mixture, cement concrete, and base and subbase. The practices of construction of embankment containing recycled C&D wastes were also elaborated in this study. The lightweight deflectometer was used to measure the in-situ resilient moduli of embankment. The measured results indicated that the recycled C&D wastes had significantly higher structural capacity than the clay soil.
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影响因子：
11.1
作者：
B. Gómez-Meijide;I. Pérez;A. R. Pasandín
通讯作者：
B. Gómez-Meijide;I. Pérez;A. R. Pasandín
DOI：
10.1061/(asce)mt.1943-5533.0001147
发表时间：
2015-06-01
影响因子：
3.2
作者：
Gu, Fan;Sahin, Hakan;Lytton, Robert L.
通讯作者：
Lytton, Robert L.
DOI：
10.1061/(asce)mt.1943-5533.0001555
发表时间：
2016-08-01
影响因子：
3.2
作者：
Gu, Fan;Zhang, Yuqing;Lytton, Robert L.
通讯作者：
Lytton, Robert L.
影响因子：
7.4
作者：
Zhu, Jiqing;Wu, Shaopeng;Wang, Dongming
通讯作者：
Wang, Dongming
影响因子：
8.1
作者：
Kartam, N;Al-Mutairi, N;Al-Humoud, J
通讯作者：
Al-Humoud, J