Hollow Cylinder Apparatus to Characterize Interfaces Between Pavement Layers

Author(s): Thomas Attia1, Hervé Di Benedetto1, Cédric Sauzéat1, François Olard2 and Simon Pouget2
Paper category: Proceedings
Book title: Proceedings of the 71st RILEM Annual Week & ICACMS 2017,Chennai,India, 3rd -8th September 2017
Editor(s): Manu Santhanam
Ravindra Gettu
Radhakrishna G. Pillai
Sunitha K. Nayar
ISBN: 978-2-35158-196-4
ISBN: 978-2-35158-190-2 (Set)
e-ISBN: 978-2-35158-191-9:
Publisher: Published by RILEM Publications S.A.R.L.
Publication year: 2017
Pages: 426-435
Total Pages: 10
Language : English

Abstract: Debonding and slippage of pavement layers are an important source of degradation for the
pavement structures. Nevertheless, the behaviour of interfaces between the layers is not
considered in classical pavement design methods or only very simply (perfectly bonded or
perfectly sliding). A new apparatus has been developed in our laboratory to assess the
performances of interfaces under loads as representative as possible of loading in pavements
(due to traffic or climate). This new device, called T3C (in French, Torsion-Compression sur
Cylindre Creux), can apply torsion and compression to hollow cylinder specimens composed
of two asphalt layers separated by an interface with a tack coat. The type of asphalt mixtures,
the type of tack coat and the dosage of the tack coat are studied parameters. In addition to
non-contact sensors an optical measurement method, Digital Image Correlation (DIC), is
used to measure strain field on the lateral surface of the samples and more specifically in the
area of the interface to investigate its mechanical behaviour. This paper presents the hollow
cylinder apparatus and the first tests results to calibrate the DIC system.

Online publication : 2017
Publication type : full_text
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