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Size Effect of Hydrated Lime on the Mechanical Performance of Asphalt Concrete

Despite widespread agreement on the beneficial nature of hydrated lime (HL) addition to asphalt concrete mixes, understanding of the effect of HL particle size is still limited. Previous investigations have focused mainly on two different size comparisons, and so certain guidance for a practical app...

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Detalles Bibliográficos
Autores principales: Albayati, Amjad, Wang, Yu, Haynes, Jonathan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9146764/
https://www.ncbi.nlm.nih.gov/pubmed/35629743
http://dx.doi.org/10.3390/ma15103715
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author Albayati, Amjad
Wang, Yu
Haynes, Jonathan
author_facet Albayati, Amjad
Wang, Yu
Haynes, Jonathan
author_sort Albayati, Amjad
collection PubMed
description Despite widespread agreement on the beneficial nature of hydrated lime (HL) addition to asphalt concrete mixes, understanding of the effect of HL particle size is still limited. Previous investigations have focused mainly on two different size comparisons, and so certain guidance for a practical application cannot yet be produced. This study investigates three distinct sizes of HL, in the range of regular, nano, and sub-nano scales, for their effects on the properties of modified asphalt concretes. Five different percentages of HL as a partial replacement of ordinary limestone filler in asphalt concrete mixes were studied for wearing course application purposes. Experimental tests were conducted to evaluate the mechanical properties, including resistance to plastic flow, volumetric properties, moisture susceptibility, resilient modulus, and permanent deformation. The results revealed that a positive correlation exists between the mechanical properties and the fineness of HL particle sizes.
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spelling pubmed-91467642022-05-29 Size Effect of Hydrated Lime on the Mechanical Performance of Asphalt Concrete Albayati, Amjad Wang, Yu Haynes, Jonathan Materials (Basel) Article Despite widespread agreement on the beneficial nature of hydrated lime (HL) addition to asphalt concrete mixes, understanding of the effect of HL particle size is still limited. Previous investigations have focused mainly on two different size comparisons, and so certain guidance for a practical application cannot yet be produced. This study investigates three distinct sizes of HL, in the range of regular, nano, and sub-nano scales, for their effects on the properties of modified asphalt concretes. Five different percentages of HL as a partial replacement of ordinary limestone filler in asphalt concrete mixes were studied for wearing course application purposes. Experimental tests were conducted to evaluate the mechanical properties, including resistance to plastic flow, volumetric properties, moisture susceptibility, resilient modulus, and permanent deformation. The results revealed that a positive correlation exists between the mechanical properties and the fineness of HL particle sizes. MDPI 2022-05-22 /pmc/articles/PMC9146764/ /pubmed/35629743 http://dx.doi.org/10.3390/ma15103715 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
Albayati, Amjad
Wang, Yu
Haynes, Jonathan
Size Effect of Hydrated Lime on the Mechanical Performance of Asphalt Concrete
title Size Effect of Hydrated Lime on the Mechanical Performance of Asphalt Concrete
title_full Size Effect of Hydrated Lime on the Mechanical Performance of Asphalt Concrete
title_fullStr Size Effect of Hydrated Lime on the Mechanical Performance of Asphalt Concrete
title_full_unstemmed Size Effect of Hydrated Lime on the Mechanical Performance of Asphalt Concrete
title_short Size Effect of Hydrated Lime on the Mechanical Performance of Asphalt Concrete
title_sort size effect of hydrated lime on the mechanical performance of asphalt concrete
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9146764/
https://www.ncbi.nlm.nih.gov/pubmed/35629743
http://dx.doi.org/10.3390/ma15103715
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