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An improved pavement maintenance optimization methodology: Integrating LCA and LCCA

机译：改进的路面养护优化方法：整合LCA和LCCA

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摘要

Environmental damage cost (EDC) is traditionally ignored in the pavement cost evaluation. This study used a combined life cycle assessment-life cycle cost analysis (LCA-LCCA) model to optimize the pavement maintenance plans with the incorporation of EDC. The paper introduced a comprehensive LCA methodology in pavement field, estimated the marginal damage costs of various air pollutants, and developed an algorithm to link LCA model and LCCA model. A case study of three overlay systems, Portland cement concrete (PCC) overlay, hot mix asphalt (HMA) overlay, and crack, seat, and overlay (CSOL), was presented. The findings through the study include: the EDC occupies a significant portion of the overall costs; the developed LCA-LCCA model is effective in reducing both the energy consumption/greenhouse gas emission ranging from 8.2% to 12.3% and the overall costs ranging from 5.9% to 10.2% for the three overlay designs, respectively; it is reasonable to expect smaller environmental burdens and less overall costs for the PCC and CSOL options as opposed to the HMA option although comparisons of the former two are indeterminate due to the great uncertainties in the usage module.
机译：传统上，在路面成本评估中会忽略环境破坏成本（EDC）。这项研究使用了生命周期评估-生命周期成本分析（LCA-LCCA）组合模型，通过结合EDC来优化路面养护计划。本文介绍了一种在路面领域使用的综合性LCA方法，估算了各种空气污染物的边际破坏成本，并开发了一种将LCA模型与LCCA模型联系起来的算法。提出了三种覆盖系统的案例研究：波特兰水泥混凝土（PCC）覆盖层，热拌沥青（HMA）覆盖层，裂缝，支座和覆盖层（CSOL）。通过研究得出的结果包括：EDC占总成本的很大一部分；所开发的LCA-LCCA模型可以有效地将三种覆盖设计的能耗/温室气体排放量分别降低8.2％至12.3％和总成本从5.9％至10.2％；与HMA选项相比，PCC和CSOL选项的环境负担较小且总体成本较低，这是合理的，尽管由于使用模块存在很大的不确定性，因此前两种方法的比较不确定。

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  • 来源
    《Transportation Research》 |2013年第9期|1-11|共11页
  • 作者

    Bin Yu; Qing Lu; Jian Xu;

  • 作者单位

    School of Transportation, Southeast University, Nanjing, Jinagsu, 210096, China;

    Civil and Environmental Engineering, University of South Florida, 4202 E. 11 Fowler Avenue, Tampa, FL 33620, United States;

    School of Transportation, Southeast University, Nanjing, Jinagsu, 210096, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    LCA; LCCA; EDC; Pavement overlay system; Optimization;

    机译：LCA;LCCA;EDC;路面覆盖系统;优化;

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