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Climate change impacts on asphalt road pavement construction and maintenance: An economic life cycle assessment of adaptation measures in the State of Virginia, United States
Journal of Industrial Ecology ( IF 5.9 ) Pub Date : 2019-08-20 , DOI: 10.1111/jiec.12936
Yaning Qiao 1 , Joao Santos 2 , Anne M.K. Stoner 3 , Gerardo Flinstch 4
Affiliation  

Pavement design and management practices must be adapted in response to future climate change. While many studies have attempted to identify different methods to adapt pavements to future climate conditions, the potential economic impacts of the adaptations still remain largely unquantified. This study presents the results of a comprehensive life‐cycle cost analysis (LCCA) aimed at quantifying the potential economic impacts of a climate adaptation method, in which an upgraded asphalt binder (Performance Grade PG 76‐22) is used in the construction and maintenance of flexible pavement sections in lieu of the original binder (PG 70‐22) for improved resistance against high temperatures. For each of three major Virginia Department of Transportation (VDOT) districts with different climates, three case studies consisting of typical interstate, primary, and secondary pavement sections were considered. The LCCA accounted for the costs incurred during the mixture's production, maintenance, and use phases of the pavement life cycle by explicitly considering future climate projections, pavement life‐cycle performance, maintenance effects, and work zone user delays. The study concludes that pavements using the upgraded binder not only perform better over time but are also economically advantageous compared to those with the original binder under the conditions of the anticipated future climate conditions (2020–2039).

中文翻译:

气候变化对沥青路面的建设和维护的影响:美国弗吉尼亚州适应措施的经济生命周期评估

路面设计和管理实践必须适应未来的气候变化。尽管许多研究试图确定使路面适应未来气候条件的不同方法,但这种适应措施的潜在经济影响仍在很大程度上未被量化。这项研究提出了旨在量化气候适应方法潜在经济影响的全面生命周期成本分析(LCCA)的结果,其中在建筑和维护中使用了升级的沥青粘合剂(性能等级PG 76-22)代替原始粘合剂(PG 70-22)来铺设柔性路面部分,以提高抗高温性。对于气候不同的弗吉尼亚州交通运输部(VDOT)的三个主要地区,每个地区都进行了三个案例研究,包括典型的州际,主要,以及次要人行道部分。LCCA通过明确考虑未来的气候预测,路面生命周期性能,维护效果和工作区用户延误,来解决混合物生命周期的生产,维护和使用阶段所产生的成本。研究得出的结论是,在预期的未来气候条件(2020-2039年)下,与使用原始粘结剂的路面相比,使用升级粘结剂的路面不仅在时间上表现更好,而且在经济上也更具优势。维护效果以及工作区用户的延迟。研究得出的结论是,在预期的未来气候条件(2020-2039年)下,与使用原始粘结剂的路面相比,使用升级粘结剂的路面不仅在时间上表现更好,而且在经济上也更具优势。维护效果以及工作区用户的延迟。研究得出的结论是,在预期的未来气候条件(2020-2039年)下,与使用原始粘结剂的路面相比,使用升级粘结剂的路面不仅在时间上表现更好,而且在经济上也更具优势。
更新日期:2019-08-20
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