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Investigation into the bond strength of bitumen-fibre mastic

Mohammed, Monketh; Parry, Tony; Thom, Nick; Grenfell, James


Monketh Mohammed

Tony Parry

Assistant Professor

James Grenfell


The loss of bond strength in road pavement surfacing due to high traffic loads or moisture is a recurring problem, creating distresses such as ravelling, fatigue and rutting. It is, therefore, important to find a way to prevent or at least delay the loss of bond strength in asphalt mixtures. Such an improvement would lead to longer service life and a more comfortable drive for road users. This study describes how the pneumatic adhesion tensile testing instrument (PATTI) was used to examine the mechanism by which fibres influence the pull-off tensile strength of asphalt mastic. This study assesses the potential for chemical modification of the binder due to the presence of fibres, by means of work of cohesion and work of adhesion calculations, based on surface energy parameters and a binder drainage test. The study also evaluates the influence of different filler-bitumen ratios and fibre percentages on pull-off tensile strength. The test results indicate that the fibres enhance the pull-off tensile strength of the mastic, in addition to changing the failure mode from cohesive to hybrid, implying an improvement in the cohesive strength of the mastic.


Mohammed, M., Parry, T., Thom, N., & Grenfell, J. (2018). Investigation into the bond strength of bitumen-fibre mastic. Construction and Building Materials, 190, 382-391.

Journal Article Type Article
Acceptance Date Sep 14, 2018
Online Publication Date Sep 27, 2018
Publication Date Nov 30, 2018
Deposit Date Sep 27, 2018
Publicly Available Date Sep 28, 2019
Journal Construction and Building Materials
Print ISSN 0950-0618
Electronic ISSN 1879-0526
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 190
Pages 382-391
Keywords Pull-off tensile strength; Work of cohesion; Surface energy; Complex modulus; Drained binder; Fibre
Public URL
Publisher URL
Additional Information This article is maintained by: Elsevier; Article Title: Investigation into the bond strength of bitumen-fibre mastic; Journal Title: Construction and Building Materials; CrossRef DOI link to publisher maintained version:; Content Type: article; Copyright: © 2018 Elsevier Ltd. All rights reserved.


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