A comparative life cycle assessment and life cycle cost analysis of chemically stabilized gravel roads

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling Pub Date : 2025-04-23 DOI:10.1016/j.resconrec.2025.108334

Md Shafiqul Islam, Angela Farina, Bora Cetin, Annick Anctil

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Abstract

Gravel roads are prone to severe distress, resulting in high construction and maintenance costs. Chemical stabilization is a widely used method for enhancing the durability of gravel roads. However, the environmental and economic impact of stabilized roads is still unknown. This study compared the environmental and economic impacts of 1-km-double lane gravel road stabilized with CaCl₂, MgCl_2, and concentrated liquid (LS) to an untreated road, using life cycle assessment (LCA) and life cycle cost analysis (LCCA). Results showed that stabilized roads had lower carbon footprint and cost than untreated roads. The LS reduced the carbon footprint of gravel roads by 3.6 % and 19.3 % than CaCl₂ and MgCl₂ stabilizers, respectively. However, LCCA results showed that the CaCl₂ stabilizer provided savings 17 % higher than LS and 15 % higher than MgCl₂. The findings of this study will help guide transportation agency's choices for gravel roads, leading to a lower environmental impact and cost.

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化学稳定碎石路的生命周期比较评估和生命周期成本分析

砾石路面容易出现严重的破损，导致建设和维护成本高昂。化学稳定是一种广泛应用的提高碎石路面耐久性的方法。然而，稳定道路的环境和经济影响仍然未知。采用生命周期评估（LCA）和生命周期成本分析（LCCA），比较了CaCl2、MgCl2和浓缩液体（LS）稳定的1公里双车道砾石公路与未经处理的道路的环境和经济影响。结果表明，稳定道路的碳足迹和成本均低于未经处理的道路。与CaCl2和MgCl2稳定剂相比，LS的碳足迹分别减少了3.6%和19.3%。然而，LCCA结果表明，CaCl2稳定剂比LS高17%，比MgCl2高15%。本研究结果将有助于指导交通运输机构对砂石道路的选择，从而降低对环境的影响和成本。

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

Resources Conservation and Recycling 环境科学-工程：环境

CiteScore

22.90

自引率

6.10%

发文量

625

审稿时长

23 days

期刊介绍： The journal Resources, Conservation & Recycling welcomes contributions from research, which consider sustainable management and conservation of resources. The journal prioritizes understanding the transformation processes crucial for transitioning toward more sustainable production and consumption systems. It highlights technological, economic, institutional, and policy aspects related to specific resource management practices such as conservation, recycling, and resource substitution, as well as broader strategies like improving resource productivity and restructuring production and consumption patterns. Contributions may address regional, national, or international scales and can range from individual resources or technologies to entire sectors or systems. Authors are encouraged to explore scientific and methodological issues alongside practical, environmental, and economic implications. However, manuscripts focusing solely on laboratory experiments without discussing their broader implications will not be considered for publication in the journal.