Abstract
Flexible pavements and climate are interactive. Pavements are climate sensitive infrastructure, where climate can impact their deterioration rate, subsequent maintenance, and life-cycle costs. Meanwhile, climate mitigation measures are urgently needed to reduce the environmental impacts of pavements and related transportation on the macroclimate and microclimate. Current pavement design and life cycle management practices may need to be modified to adapt to changing climates and to reduce environmental impacts. This paper reports an extensive literature search on qualitative and quantitative pavement research related to climate change in recent years. The topics cover climate stressors, sensitivity of pavement performance to climatic factors, impacts of climate change on pavement systems, and, most importantly, discussions of climate change adaptation, mitigation, and their interactions. This paper is useful for those who aim to understand or research the climate resilience of flexible pavements.
Highlights
Evidence from previous studies has shown that the climate is changing
Indirect impacts are principally from demographic changes caused by climate-related migrations, and may include such factors as changes in vegetative shade due to growth differences resulting from climate change [6]
Li et al [49] developed a framework to assess the impact of climate change on flexible pavements and estimated calibration factors for modifying Mechanistic-Empirical Pavement Design Guide (MEPDG) performance predictions to account for climate change
Summary
Evidence from previous studies has shown that the climate is changing. For example, global surface temperature has increased 0.85 ◦C between 1880 and 2012, and the rate of change has become more rapid in the most recent decades. To answer these questions, this paper attempts to present a comprehensive literature review synthesizing the current understanding of the interactions between climate change and flexible pavement systems, in terms of climate adaptation and mitigation. This paper can serve as a “hitch-hiker’s guide” for agencies, road users, researchers, and practitioners to understand climate change adaptation and mitigation of flexible pavements from a systematic perspective. It serves as a synthesis of the existing knowledge regarding what is known and what is not known related to climate resilient and sustainable flexible pavements. Gaps in the current research are identified with recommended future research areas
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