Building Sustainable Pavements: Investigating the Effectiveness of Recycled Tire Rubber as a Modifier in Asphalt Mixtures

Building more sustainable pavements for the future requires knowledge of alternative and innovative materials for utilization in future road construction and maintenance activities. Being mindful of this need, the present study investigates a Reacted and Activated Rubber (RAR) compound modifier with...

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Autores principales:	Christina Plati, Brad Cliatt
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	pavement sustainability modifier surface course rubber RAR Technology T
Acceso en línea:	https://doaj.org/article/55e1ba91fee14056829670f699ee6bf2
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spelling	oai:doaj.org-article:55e1ba91fee14056829670f699ee6bf22021-11-11T15:54:00ZBuilding Sustainable Pavements: Investigating the Effectiveness of Recycled Tire Rubber as a Modifier in Asphalt Mixtures10.3390/en142170991996-1073https://doaj.org/article/55e1ba91fee14056829670f699ee6bf22021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7099https://doaj.org/toc/1996-1073Building more sustainable pavements for the future requires knowledge of alternative and innovative materials for utilization in future road construction and maintenance activities. Being mindful of this need, the present study investigates a Reacted and Activated Rubber (RAR) compound modifier with the aim of defining an optimal RAR percentage in Asphalt Concrete (AC) mixes. It is acknowledged that when this type of modifier is incorporated within an AC mix as an alternative for the bituminous binder material, the associated economic, environmental and social benefits are significant. Simply put, the use of RAR modifiers provides the potential to utilize a waste product (rubber tires) as a more sustainable alternative to bitumen within AC mixtures. However, it seems that the information about the overall performance of AC mixes modified with RAR is currently limited. On these grounds, the present study focuses on the surface course layer and evaluates (a) achieved physical characteristics (compaction degree/voids), (b) mechanical characterization results (stiffness moduli) and (c) friction-based properties of tested mixtures incorporating varying RAR levels and different test temperatures. From the evaluation, it is concluded that for the case of the surface course mixture under investigation, the optimal percentage by weight of bitumen for inclusion of the RAR modifier is 10%.Christina PlatiBrad CliattMDPI AGarticlepavementsustainabilitymodifiersurface courserubberRARTechnologyTENEnergies, Vol 14, Iss 7099, p 7099 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	pavement sustainability modifier surface course rubber RAR Technology T
spellingShingle	pavement sustainability modifier surface course rubber RAR Technology T Christina Plati Brad Cliatt Building Sustainable Pavements: Investigating the Effectiveness of Recycled Tire Rubber as a Modifier in Asphalt Mixtures
description	Building more sustainable pavements for the future requires knowledge of alternative and innovative materials for utilization in future road construction and maintenance activities. Being mindful of this need, the present study investigates a Reacted and Activated Rubber (RAR) compound modifier with the aim of defining an optimal RAR percentage in Asphalt Concrete (AC) mixes. It is acknowledged that when this type of modifier is incorporated within an AC mix as an alternative for the bituminous binder material, the associated economic, environmental and social benefits are significant. Simply put, the use of RAR modifiers provides the potential to utilize a waste product (rubber tires) as a more sustainable alternative to bitumen within AC mixtures. However, it seems that the information about the overall performance of AC mixes modified with RAR is currently limited. On these grounds, the present study focuses on the surface course layer and evaluates (a) achieved physical characteristics (compaction degree/voids), (b) mechanical characterization results (stiffness moduli) and (c) friction-based properties of tested mixtures incorporating varying RAR levels and different test temperatures. From the evaluation, it is concluded that for the case of the surface course mixture under investigation, the optimal percentage by weight of bitumen for inclusion of the RAR modifier is 10%.
format	article
author	Christina Plati Brad Cliatt
author_facet	Christina Plati Brad Cliatt
author_sort	Christina Plati
title	Building Sustainable Pavements: Investigating the Effectiveness of Recycled Tire Rubber as a Modifier in Asphalt Mixtures
title_short	Building Sustainable Pavements: Investigating the Effectiveness of Recycled Tire Rubber as a Modifier in Asphalt Mixtures
title_full	Building Sustainable Pavements: Investigating the Effectiveness of Recycled Tire Rubber as a Modifier in Asphalt Mixtures
title_fullStr	Building Sustainable Pavements: Investigating the Effectiveness of Recycled Tire Rubber as a Modifier in Asphalt Mixtures
title_full_unstemmed	Building Sustainable Pavements: Investigating the Effectiveness of Recycled Tire Rubber as a Modifier in Asphalt Mixtures
title_sort	building sustainable pavements: investigating the effectiveness of recycled tire rubber as a modifier in asphalt mixtures
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/55e1ba91fee14056829670f699ee6bf2
work_keys_str_mv	AT christinaplati buildingsustainablepavementsinvestigatingtheeffectivenessofrecycledtirerubberasamodifierinasphaltmixtures AT bradcliatt buildingsustainablepavementsinvestigatingtheeffectivenessofrecycledtirerubberasamodifierinasphaltmixtures
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Building Sustainable Pavements: Investigating the Effectiveness of Recycled Tire Rubber as a Modifier in Asphalt Mixtures

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