Structural Performance of Cement-treated Base Layer by Incorporating Reclaimed Asphalt Material and Plastic Waste

IF 1 Q4 ENGINEERING, CIVIL

Jordan Journal of Civil Engineering Pub Date : 2023-04-01 DOI:10.14525/jjce.v17i2.08

A. Banerji, P. Topdar, A. Datta

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引用次数: 0

Abstract

The reuse of reclaimed asphalt material (RAM) and polyethylene terephthalate (PET) plastic waste is a reliable approach to limit the use of virgin aggregates for road construction and mitigate environmental challenges. This study highlights the structural performance of the cementitious base or cement-treated base (CTB) layer by incorporating reclaimed asphalt and plastic waste material. Structural compatibility of CTB layer with different proportions of RAM (20%, 45%, 70% and 95%), virgin aggregates and plastic waste (5%) is recognized by the moisture-density relationship, unconfined compressive, indirect tensile strength, flexural strength and California bearing ratio tests. In the current study, a ranking methodology is used to analyze the overall suitability of the cementitious base mix proportions using different laboratory test parameters. Furthermore, a finite element analysis using the ANSYS software is performed to investigate the effect of CTB layer on the pavement structural responses. Also, using the central public works department guidelines, a cost comparative study is provided. Experimental results showed that all the cementitious base mixes met the requirements for the unconfined compressive strength, except for the 95% and 70% RAM mixes. Therefore, 20%-45% of RAM can partially be used in the CTB layer to replace virgin aggregates partially. The finite element analysis results showed that CTB reduced fatigue strain by 57% and surface deformation by 47%. Moreover, it has been concluded that by utilizing a cementitious base with RAM, there is a 30% cost reduction. KEYWORDS: Reclaimed asphalt material, Cement-treated base, Polyethylene terephthalate, Finite element analysis, Unconfined compressive strength.

查看原文本刊更多论文

再生沥青材料与塑料废弃物复合水泥处理基层结构性能研究

再生沥青材料(RAM)和聚对苯二甲酸乙二醇酯(PET)塑料废物的再利用是一种可靠的方法，可以限制道路建设中原始骨料的使用，并减轻环境挑战。本研究通过加入再生沥青和塑料废料，重点研究了水泥基或水泥处理基(CTB)层的结构性能。通过湿密关系、无侧限抗压强度、间接抗拉强度、抗弯强度和California承载比试验，验证了不同RAM(20%、45%、70%和95%)、原生骨料和废塑料(5%)配比下CTB层的结构相容性。在本研究中，采用排序方法对不同实验室试验参数下胶凝基层配合比的总体适宜性进行了分析。在此基础上，利用ANSYS软件进行了有限元分析，研究了CTB层对路面结构响应的影响。此外，根据中央工务署的指引，进行成本比较研究。试验结果表明，除95%和70% RAM混合料外，其余胶凝基层均满足无侧限抗压强度要求。因此，20%-45%的RAM可以部分用于CTB层，以部分替换原始聚合。有限元分析结果表明，CTB使疲劳应变降低57%，表面变形降低47%。此外，已经得出结论，通过使用带有RAM的胶凝基，可以降低30%的成本。关键词:再生沥青材料，水泥处理基层，聚对苯二甲酸乙二醇酯，有限元分析，无侧限抗压强度

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Jordan Journal of Civil Engineering ENGINEERING, CIVIL-

CiteScore

2.10

自引率

27.30%

发文量

期刊介绍： I am very pleased and honored to be appointed as an Editor-in-Chief of the Jordan Journal of Civil Engineering which enjoys an excellent reputation, both locally and internationally. Since development is the essence of life, I hope to continue developing this distinguished Journal, building on the effort of all the Editors-in-Chief and Editorial Board Members as well as Advisory Boards of the Journal since its establishment about a decade ago. I will do my best to focus on publishing high quality diverse articles and move forward in the indexing issue of the Journal.