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Assessment of Asphalt Mixture Behaviour Containing Recycled Concrete Aggregates

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Abstract:

Recently, the construction industry uses the Recycled Concrete Aggregates (RCA)resulting from construction and demolition waste (CDW) to achieve sustainable requirements andeconomic benefits. In this paper, asphalt paving mixes were prepared with RCA instead of naturalaggregates for the base course in flexible road pavements and walking areas used by pedestrians andcyclists. Different asphalt mixes samples were prepared with different asphalt contents to meet therequired specifications. Additionally, several laboratory tests were carried out to assess mixturebehavior including the Marshall test. The results indicated that the mixture made with aggregates ofCDW have met all the requirements of Iraqi specifications of roads and bridges (SORB/R9). Thisinvestigation could be a useful guide for road engineers in designing asphalt mixtures from RCA.

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Periodical:

Key Engineering Materials (Volume 895)

Pages:

139-146

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.895.139

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Online since:

August 2021

Authors:

Sarah Safaaldeen Musa, Noorance Al-Mukaram*, Mohammed Bally Mahdi

Keywords:

Asphalt Concrete Mixture, Concrete Waste, Construction, Demolition Waste (CDW), Recycled Concrete Aggregates (RCA)

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© 2021 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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