Review on thermal behavior of cool pavements

The increase in urban population worldwide has led to a significant increase in anthropogenic activities, and the replacement of vegetation with impervious pavements that have a dark surface and high thermal inertia which has contributed to the development of urban heat islands (UHIs). Since pavements represent an important fraction of urban areas, the use of cool pavements is considered an important strategy for reducing the effects of UHIs. This article offers an overview of recent research advances related to the use of several types of cool pavements to mitigate UHIs. The thermal behavior and the main factors that influence the cooling effect of these pavements were analyzed. The cooling performances of these pavements were compared with each other. Limitations and factors that affect their durability were identified. Further efforts are needed to address these limitations, which will be essential to effectively address the negative impacts of UHIs. The results show that the cooling performance of cool pavements can help reduce the temperature in urban environments. This study will serve as a basis for future developments in cool pavements and targets issues that need to be worked - especially for new technologies in this field.