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A comparative life cycle assessment (LCA), life cycle cost analysis (LCCA), mechanical and long-term leaching evaluation of road pavement structures containing multiple secondary materials
Journal of Cleaner Production ( IF 11.1 ) Pub Date : 2024-05-06 , DOI: 10.1016/j.jclepro.2024.142484
Mehrdad Asadi Azadgoleh , Mohammad Mahdi Mohammadi , Hessam AzariJafari , Joao Santos , Arman Ahmadi , Mohammad Zia Alavi , Pooyan Ayar

Oil-Based Drill Cuttings (OBDC) are one of the hazardous wastes of the oil and gas industry. In this study, Reclaimed Asphalt Pavement (RAP), OBDC and Fly Ash (FA) geopolymer were used in Cold Central Plant Recycling (CCPR) mixtures. The dynamic modulus test was used to appraise the viscoelastic properties of CCPR mixtures. The Toxicity Characteristic Leaching Procedure (TCLP) test was also utilized to investigate the long-term contaminants leaching. In addition, a cradle-to-grave Life Cycle Assessment (LCA) and Life Cycle Cost Analysis (LCCA) were conducted to evaluate the potential environmental burdens and economic costs of pavement structures containing CCPR mixtures. Moreover, Multi-Criteria Decision-Making (MCDM) analysis using four different methods was performed to determine the optimal sample. The results revealed that the recycling of OBDC and RAP in stabilized CCPR mixtures with FA geopolymer can improve the viscoelastic properties and prevent the leaching of contaminants from these waste materials. Furthermore, recycling of the mentioned waste materials in CCPR mixtures has caused a significant reduction in global warming, acidification, eutrophication, smog, respiratory effects, Human toxicity, ecotoxicity, and cumulative energy demand up to 41%, 36.6%, 73%, 43%, 47%, 34%, 73%, and 13%, respectively. Additionally, using CCPR mixtures containing the OBCD, RAP, and FA geopolymer in the pavement structure has led to economic benefits of up to 31% compared to the conventional pavement system.

中文翻译:

包含多种次级材料的道路路面结构的比较生命周期评估(LCA)、生命周期成本分析(LCCA)、机械和长期浸出评估

油基钻屑(OBDC)是石油和天然气行业的危险废物之一。在这项研究中,再生沥青路面 (RAP)、OBDC 和粉煤灰 (FA) 地质聚合物被用于冷中央工厂回收 (CCPR) 混合物。动态模量测试用于评价 CCPR 混合物的粘弹性能。毒性特征浸出程序(TCLP)测试也用于研究长期污染物浸出。此外,还进行了从摇篮到坟墓的生命周期评估(LCA)和生命周期成本分析(LCCA),以评估含有 CCPR 混合物的路面结构的潜在环境负担和经济成本。此外,使用四种不同方法进行多标准决策(MCDM)分析以确定最佳样本。结果表明,在稳定的 CCPR 混合物中与 FA 地质聚合物回收 OBDC 和 RAP 可以改善粘弹性,并防止污染物从这些废料中浸出。此外,回收 CCPR 混合物中提到的废料已使全球变暖、酸化、富营养化、烟雾、呼吸系统影响、人体毒性、生态毒性和累积能源需求显着减少达 41%、36.6%、73%、43分别为 %、47%、34%、73% 和 13%。此外,在路面结构中使用含有 OBCD、RAP 和 FA 地质聚合物的 CCPR 混合物,与传统路面系统相比,经济效益高达 31%。
更新日期:2024-05-06
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