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Flexural characteristics of rubberized cement-stabilized crushed aggregate for pavement structure

Farhan, Ahmed Hilal; Dawson, Andrew; Thom, Nicholas Howard; Adam, Sarhat Mustafa; Smith, Martin John

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Authors

Ahmed Hilal Farhan

Andrew Dawson

Nicholas Howard Thom

Sarhat Mustafa Adam

Martin John Smith



Abstract

The purpose of this paper is to investigate the flexural characteristics and to quantitatively study the flexural-induced cracking of reference and rubberized cement stabilized aggregate mixtures. Four volumetric replacement percentages (0%, 15%, 30% and 45%) of 6 mm fraction size were used. This modification was found to affect the material strength detrimentally. However, material toughness was improved and stiffness was reduced. The latter findings were supported by quantitative assessment of the fractured surfaces which revealed more tortuous and rougher cracking as a result of rubber content increasing. This, in turn, may ensure a good load transfer across the cracks after their formation. Overall, using rubber in pavement construction is a sustainable solution that ensures consumption of large quantities of these waste materials. At the same time, it may be considered as a promising method to reduce cracking tendency and sensitivity which may improve shrinkage, thermal and fatigue performance.

Citation

Farhan, A. H., Dawson, A., Thom, N. H., Adam, S. M., & Smith, M. J. (2015). Flexural characteristics of rubberized cement-stabilized crushed aggregate for pavement structure. Materials and Design, 88, https://doi.org/10.1016/j.matdes.2015.09.071

Journal Article Type Article
Acceptance Date Sep 14, 2015
Online Publication Date Sep 15, 2015
Publication Date Dec 25, 2015
Deposit Date Jul 11, 2016
Publicly Available Date Jul 11, 2016
Journal Materials & Design
Electronic ISSN 0261-3069
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 88
DOI https://doi.org/10.1016/j.matdes.2015.09.071
Keywords Cement stabilized aggregate; Rubberized cement stabilized mixture; Flexural behaviour; Fractured surface characterization; Ultrasonic testing
Public URL https://nottingham-repository.worktribe.com/output/768667
Publisher URL http://dx.doi.org/10.1016/j.matdes.2015.09.071
Contract Date Jul 11, 2016

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