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Cool Pavements: State of the Art and New Technologies

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Department of Environmental Engineering, University of Patras, 30100 Agrinio, Greece
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Department of Chemical Engineering, University of Western Macedonia, 50100 Kozani, Greece
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School of Production Engineering & Management, Technical University of Crete, 73100 Chania, Greece
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Department of Mechanical Engineering, University of Western Macedonia, 50100 Kozani, Greece
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Department of International and European Studies, University of Piraeus, 18534 Piraeus, Greece
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Sustainability Research Centre, University of the Sunshine Coast, Maroochydore, QLD 4558, Australia
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Institute of Marine Resources, Faculty of Science, Technology and Environment, The University of the South Pacific, Suva, Fiji
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Department of Mechanical Engineering & Aeronautics, University of Patras, 26504 Patras, Greece
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Authors to whom correspondence should be addressed.
Academic Editor: Vincenzo Costanzo
Sustainability 2022, 14(9), 5159; https://doi.org/10.3390/su14095159
Received: 26 March 2022 / Revised: 20 April 2022 / Accepted: 22 April 2022 / Published: 25 April 2022
With growing urban populations, methods of reducing the urban heat island effect have become increasingly important. Cool pavements altering the heat storage of materials used in pavements can lead to lower surface temperatures and reduce the thermal radiation emitted to the atmosphere. Cool pavement technologies utilize various strategies to reduce the temperature of new and existing pavements, including increased albedo, evaporative cooling, and reduced heat conduction. This process of negative radiation forces helps offset the impacts of increasing atmospheric temperatures. This paper presents an extensive analysis of the state of the art of cool pavements. The properties and principles of cool pavements are reviewed, including reflectivity, thermal emittance, heat transfer, thermal capacity, and permeability. The different types, research directions, and applications of reflective pavements are outlined and discussed. Maintenance and restoration technologies of cool pavements are reviewed, including permeable pavements. Results show that cool pavements have significant temperature reduction potential in the urban environment. This research is important for policy actions of the European Union, noting that European and international business stakeholders have recently expressed their interest in new ways of reducing energy consumption through technologically advanced pavements. View Full-Text
Keywords: urban heat island; cool pavements; reduction of carbon dioxide; energy savings; reflectivity; thermal emittance; heat transfer; thermal capacity; energy policy urban heat island; cool pavements; reduction of carbon dioxide; energy savings; reflectivity; thermal emittance; heat transfer; thermal capacity; energy policy
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MDPI and ACS Style

Kappou, S.; Souliotis, M.; Papaefthimiou, S.; Panaras, G.; Paravantis, J.A.; Michalena, E.; Hills, J.M.; Vouros, A.P.; Ntymenou, A.; Mihalakakou, G. Cool Pavements: State of the Art and New Technologies. Sustainability 2022, 14, 5159. https://doi.org/10.3390/su14095159

AMA Style

Kappou S, Souliotis M, Papaefthimiou S, Panaras G, Paravantis JA, Michalena E, Hills JM, Vouros AP, Ntymenou A, Mihalakakou G. Cool Pavements: State of the Art and New Technologies. Sustainability. 2022; 14(9):5159. https://doi.org/10.3390/su14095159

Chicago/Turabian Style

Kappou, Sophia, Manolis Souliotis, Spiros Papaefthimiou, Giorgos Panaras, John A. Paravantis, Evanthie Michalena, Jeremy Maxwell Hills, Andreas P. Vouros, Aikaterini Ntymenou, and Giouli Mihalakakou. 2022. "Cool Pavements: State of the Art and New Technologies" Sustainability 14, no. 9: 5159. https://doi.org/10.3390/su14095159

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