Seasonal Performance Evaluation of Pavement Base Using Recycled Materials

Using recycled pavement materials to construct new pavement base is currently an important construction strategy bringing improved sustainability. This study investigates the long-term performance of pavement bases constructed with recycled concrete aggregate (RCA), reclaimed asphalt pavement (RAP),...

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Autores principales:	Yang Zhang, Bora Cetin, Tuncer B. Edil
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	pavement base seasonal freezing falling weight deflectometer back-calculated modulus recycled concrete aggregate reclaimed asphalt pavement Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/c7bef1914ab54d30908ccf753b539a3d
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spelling	oai:doaj.org-article:c7bef1914ab54d30908ccf753b539a3d2021-11-25T19:03:46ZSeasonal Performance Evaluation of Pavement Base Using Recycled Materials10.3390/su1322127142071-1050https://doaj.org/article/c7bef1914ab54d30908ccf753b539a3d2021-11-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/22/12714https://doaj.org/toc/2071-1050Using recycled pavement materials to construct new pavement base is currently an important construction strategy bringing improved sustainability. This study investigates the long-term performance of pavement bases constructed with recycled concrete aggregate (RCA), reclaimed asphalt pavement (RAP), and blends with natural aggregates in a seasonal frost region. The stabilization effect of fly ash on RAP was studied as well. In situ falling weight deflectometer (FWD) tests were routinely conducted to provide seasonal deflection data, which were used to back-calculate the layer modulus. Seasonal changes in the base layer modulus along with the pavement ride quality were monitored. One of the two lanes at the test sections was consistently subjected to traffic loading, whereas the other one was not. Findings from this field research indicated that after undergoing over 8 years of naturally seasonal freeze-thaw conditions, 100% RCA, 50% RCA, plus 50% natural aggregates, and 100% RAP, presented improved performance over 100% natural aggregates. However, 50% RAP blended with 50% natural aggregates performed comparably to natural aggregates only, and fly ash did not provide considerable improvement on the long-term performance of 50% RAP plus 50% natural aggregate base. Seasonal climatic variations turned out to affect pavement performance more critically than traffic loading.Yang ZhangBora CetinTuncer B. EdilMDPI AGarticlepavement baseseasonal freezingfalling weight deflectometerback-calculated modulusrecycled concrete aggregatereclaimed asphalt pavementEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 12714, p 12714 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	pavement base seasonal freezing falling weight deflectometer back-calculated modulus recycled concrete aggregate reclaimed asphalt pavement Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
spellingShingle	pavement base seasonal freezing falling weight deflectometer back-calculated modulus recycled concrete aggregate reclaimed asphalt pavement Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Yang Zhang Bora Cetin Tuncer B. Edil Seasonal Performance Evaluation of Pavement Base Using Recycled Materials
description	Using recycled pavement materials to construct new pavement base is currently an important construction strategy bringing improved sustainability. This study investigates the long-term performance of pavement bases constructed with recycled concrete aggregate (RCA), reclaimed asphalt pavement (RAP), and blends with natural aggregates in a seasonal frost region. The stabilization effect of fly ash on RAP was studied as well. In situ falling weight deflectometer (FWD) tests were routinely conducted to provide seasonal deflection data, which were used to back-calculate the layer modulus. Seasonal changes in the base layer modulus along with the pavement ride quality were monitored. One of the two lanes at the test sections was consistently subjected to traffic loading, whereas the other one was not. Findings from this field research indicated that after undergoing over 8 years of naturally seasonal freeze-thaw conditions, 100% RCA, 50% RCA, plus 50% natural aggregates, and 100% RAP, presented improved performance over 100% natural aggregates. However, 50% RAP blended with 50% natural aggregates performed comparably to natural aggregates only, and fly ash did not provide considerable improvement on the long-term performance of 50% RAP plus 50% natural aggregate base. Seasonal climatic variations turned out to affect pavement performance more critically than traffic loading.
format	article
author	Yang Zhang Bora Cetin Tuncer B. Edil
author_facet	Yang Zhang Bora Cetin Tuncer B. Edil
author_sort	Yang Zhang
title	Seasonal Performance Evaluation of Pavement Base Using Recycled Materials
title_short	Seasonal Performance Evaluation of Pavement Base Using Recycled Materials
title_full	Seasonal Performance Evaluation of Pavement Base Using Recycled Materials
title_fullStr	Seasonal Performance Evaluation of Pavement Base Using Recycled Materials
title_full_unstemmed	Seasonal Performance Evaluation of Pavement Base Using Recycled Materials
title_sort	seasonal performance evaluation of pavement base using recycled materials
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/c7bef1914ab54d30908ccf753b539a3d
work_keys_str_mv	AT yangzhang seasonalperformanceevaluationofpavementbaseusingrecycledmaterials AT boracetin seasonalperformanceevaluationofpavementbaseusingrecycledmaterials AT tuncerbedil seasonalperformanceevaluationofpavementbaseusingrecycledmaterials
_version_	1718410364672016384

Seasonal Performance Evaluation of Pavement Base Using Recycled Materials

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