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AuthorMohamedain, Moaaz Hashim
AuthorHassan, Khaled E.
AuthorEl-Hussain, Osman
AuthorAl-Emadi, Khalid
Available date2020-04-30T12:59:32Z
Publication Date2020
Publication NameProceedings of the International Conference on Civil Infrastructure and Construction
CitationMohamedain M. H., Hassan K. E., El-Hussain O., Al-Emadi K., Challenges for the Use of Local Materials in Unbound Road Subbase in Qatar, International Conference on Civil Infrastructure and Construction (CIC 2020), Doha, Qatar, 2-5 February 2020, DOI: https://doi.org/10.29117/cic.2020.0072
ISSN2958-3128
IdentifierP. O. Box: 2713 Doha-Qatar, Email: qupress@qu.edu.qa
URIwww.cic.qa
URIhttp://dx.doi.org/10.29117/cic.2020.0072
URIhttp://hdl.handle.net/10576/14758
AbstractCurrent practice in Qatar is to blend local limestone with dune sand for use in unbound pavement applications. Dune sand is used to improve the properties of fine aggregate and compliance with the QCS 2014 requirements of plasticity and sand equivalent. The material has been successfully used for many years but currently facing the challenge of limited dune sand supply and recent government restrictions on its use in construction. The paper presents data on the properties of limestone obtained from different sources, tested in accordance with the QCS 2014 requirements. Variation of limestone source and the presence of clay particles greatly affected its suitability for use in unbound pavement applications. Improvement could be achieved by adjusting the grading of the material. Recommendations are made to revise the QCS 2014 specifications within the context of international specifications, when the unbound material is placed in a dry environment and away from the water level to enhance the wider utilization of local materials and sustainable construction in Qatar.
Languageen
PublisherQatar Univesrity Press
SubjectLocal limestone aggregate
Pavement
Unbound subbase
Properties
Specifications
TitleChallenges for the Use of Local Materials in Unbound Road Subbase in Qatar
TypeConference Paper
Pagination574-581
ESSN2958-3136
dc.accessType Open Access


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