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Performance of Asphalt Rubber Mixture Overlays to Mitigate Reflective Cracking

Adequately predicting overlay behaviour is essential for flexible pavement rehabilitation to reach the predicted lifespan. Reflective cracking is one of the main failure mechanisms affecting overlay performance. This failure may occur due to cracks in the lower layers that propagate to the overlay d...

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Autores principales: Thives, Liseane Padilha, Pais, Jorge C., Pereira, Paulo A. A., Minhoto, Manuel C., Trichês, Glicério
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8999683/
https://www.ncbi.nlm.nih.gov/pubmed/35407708
http://dx.doi.org/10.3390/ma15072375
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author Thives, Liseane Padilha
Pais, Jorge C.
Pereira, Paulo A. A.
Minhoto, Manuel C.
Trichês, Glicério
author_facet Thives, Liseane Padilha
Pais, Jorge C.
Pereira, Paulo A. A.
Minhoto, Manuel C.
Trichês, Glicério
author_sort Thives, Liseane Padilha
collection PubMed
description Adequately predicting overlay behaviour is essential for flexible pavement rehabilitation to reach the predicted lifespan. Reflective cracking is one of the main failure mechanisms affecting overlay performance. This failure may occur due to cracks in the lower layers that propagate to the overlay due to traffic loads, temperature variations, shrinkage cracking of cement-treated layers, and subgrade movements. This work aims to assess the reflective cracking phenomenon of asphalt rubber mixtures as an overlay through laboratory tests and numerical simulation. Four-point bending equipment and the reflective crack device were used to perform the laboratory tests. A numerical simulation through the finite element method was accomplished to estimate the von Mises strain and develop reflective cracking fatigue laws. The results showed that the asphalt rubber mixtures are suitable for extending overlay lifespan considering reflective cracking. The evaluated asphalt rubber mixtures presented reflective cracking resistance almost eight times greater than the conventional ones.
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spelling pubmed-89996832022-04-12 Performance of Asphalt Rubber Mixture Overlays to Mitigate Reflective Cracking Thives, Liseane Padilha Pais, Jorge C. Pereira, Paulo A. A. Minhoto, Manuel C. Trichês, Glicério Materials (Basel) Article Adequately predicting overlay behaviour is essential for flexible pavement rehabilitation to reach the predicted lifespan. Reflective cracking is one of the main failure mechanisms affecting overlay performance. This failure may occur due to cracks in the lower layers that propagate to the overlay due to traffic loads, temperature variations, shrinkage cracking of cement-treated layers, and subgrade movements. This work aims to assess the reflective cracking phenomenon of asphalt rubber mixtures as an overlay through laboratory tests and numerical simulation. Four-point bending equipment and the reflective crack device were used to perform the laboratory tests. A numerical simulation through the finite element method was accomplished to estimate the von Mises strain and develop reflective cracking fatigue laws. The results showed that the asphalt rubber mixtures are suitable for extending overlay lifespan considering reflective cracking. The evaluated asphalt rubber mixtures presented reflective cracking resistance almost eight times greater than the conventional ones. MDPI 2022-03-23 /pmc/articles/PMC8999683/ /pubmed/35407708 http://dx.doi.org/10.3390/ma15072375 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Thives, Liseane Padilha
Pais, Jorge C.
Pereira, Paulo A. A.
Minhoto, Manuel C.
Trichês, Glicério
Performance of Asphalt Rubber Mixture Overlays to Mitigate Reflective Cracking
title Performance of Asphalt Rubber Mixture Overlays to Mitigate Reflective Cracking
title_full Performance of Asphalt Rubber Mixture Overlays to Mitigate Reflective Cracking
title_fullStr Performance of Asphalt Rubber Mixture Overlays to Mitigate Reflective Cracking
title_full_unstemmed Performance of Asphalt Rubber Mixture Overlays to Mitigate Reflective Cracking
title_short Performance of Asphalt Rubber Mixture Overlays to Mitigate Reflective Cracking
title_sort performance of asphalt rubber mixture overlays to mitigate reflective cracking
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8999683/
https://www.ncbi.nlm.nih.gov/pubmed/35407708
http://dx.doi.org/10.3390/ma15072375
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