Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/82678
Título: | Mitigation of urban heat island effects by thermochromic asphalt pavement |
Autor(es): | Carneiro, Joaquim A. O. Júnior, Orlando Sousa Lima Freitas, E. F. Cardoso, Pedro Segundo, Iran Gomes Rocha Margalho, Élida Melo Moreira, Luís Nascimento, José Heriberto Oliveira Landi, Salmon Jr. |
Palavras-chave: | Thermochromism Smart asphalt pavement Cool pavements; Thermocapsules Leuco dyes |
Data: | 1-Jan-2023 |
Editora: | Multidisciplinary Digital Publishing Institute (MDPI) |
Revista: | Coatings |
Citação: | Lima, O., Jr.; Freitas, E.; Cardoso, P.; Segundo, I.R.; Margalho, É.; Moreira, L.; O. Nascimento, J.H.; Landi, S., Jr.; Carneiro, J. Mitigation of Urban Heat Island Effects by Thermochromic Asphalt Pavement. Coatings 2023, 13, 35. https://doi.org/10.3390/coatings13010035 |
Resumo(s): | Asphalt road pavements are usually dark and, consequently, have a low albedo. Therefore, they absorb energy as heat, increasing the Urban Heat Island (UHI) effect, which impacts the environment, energy consumption, and human health. Through the functionalization with thermochromic materials (TM), this work aims to develop a smart asphalt pavement able to change its surface color, increasing the reflectance, and thus mitigate this phenomenon. To achieve this goal, asphalt substrates were functionalized by a surface spray coating of a thermochromic solution (TS) containing aqueous solution of thermochromic microcapsules (thermocapsules), dye, and epoxy resin. To evaluate the functionalization features, Fourier Transform Infrared Spectroscopy (FTIR), and Thermal Differential test (TDT) with cyclic temperature variation were performed in the functionalized asphalt binder. Moreover, Scanning Electron Microscopy (SEM), Energy-Dispersive X-ray Spectrometry (EDS), a Quick Ultraviolet Accelerated Weathering Test (QUV) with Colorimetry test, and an adaptation of the Accelerated Polishing Test (APT) were performed on the functionalized asphalt mixture. The results indicate that the functionalization of asphalt substrates with TS exhibits a reversible color-change ability, higher luminosity values when subjected to temperatures above 30 C, and wear resistance. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/82678 |
DOI: | 10.3390/coatings13010035 |
Versão da editora: | https://www.mdpi.com/2079-6412/13/1/35 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | ISISE - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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coatings-13-00035-v2.pdf | 4,2 MB | Adobe PDF | Ver/Abrir |