Mechanical Properties of Unbound Limestone Aggregates Replaced by Recycled Glass Aggregate for Pavement in Canada/Quebec

IF 1.1 4区工程技术 Q3 ENGINEERING, CIVIL

Canadian Journal of Civil Engineering Pub Date : 2023-11-06 DOI:10.1139/cjce-2023-0158

Sahar Mohsenian Hadad Amlashi, Michel Vaillancourt, Alan Carter, Jean-Pascal Bilodeau, Elmira Khaksar Najafi, Reyhaneh Rahbar-Rastegar

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Abstract

This study investigated the use of recycled glass aggregate (RG) as unbound base/subbase material. The experimental tests included compaction, Los Angeles (LA), Micro-Deval, and California bearing ratio (CBR) tests. In this regard, fine proportion of course limestone aggregate (MG20) was replaced by RG with size ranging from 0 to 5 mm based on volumetric method. Adding RG to the coarse aggregate improved durability in wet conditions, which is more representative of the field condition of Canada/Quebec, but decreased in dry conditions. CBR values decreased with increasing RG inclusion, but all blends with 0-100% RG in the fine fraction of MG20 met minimum requirements for unbound granular layers in Quebec. A simple model predicting the resilient modulus values of these materials based on CBR values at different stress levels was suggested. This equation estimates Mr values of various aggregate-RG blends under a wide range of mean stress based on their CBR values.

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加拿大/魁北克路面用再生玻璃骨料替代未粘结石灰石骨料的力学性能

本研究探讨了利用再生玻璃骨料(RG)作为游离基/亚基材料。试验试验包括压实试验、洛杉矶试验、微压试验和加州承载比试验。为此，采用体积法将细粒级石灰石骨料(MG20)替换为粒径为0 ~ 5mm的RG。在粗骨料中添加RG提高了湿条件下的耐久性，这更能代表加拿大/魁北克的现场条件，但在干燥条件下则降低了耐久性。CBR值随RG含量的增加而降低，但MG20细组分中RG含量为0 ~ 100%的混合物均满足魁北克地区无束缚颗粒层的最低要求。提出了一种基于CBR值预测不同应力水平下这些材料弹性模量的简单模型。该方程根据其CBR值估计了各种aggregate-RG共混物在大范围平均应力下的Mr值。

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

Canadian Journal of Civil Engineering 工程技术-工程：土木

CiteScore

3.00

自引率

7.10%

发文量

105

审稿时长

14 months

期刊介绍： The Canadian Journal of Civil Engineering is the official journal of the Canadian Society for Civil Engineering. It contains articles on environmental engineering, hydrotechnical engineering, structural engineering, construction engineering, engineering mechanics, engineering materials, and history of civil engineering. Contributors include recognized researchers and practitioners in industry, government, and academia. New developments in engineering design and construction are also featured.