Evaluation of Tack Coat Materials and Application Rates for Asphalt Interlayer Bond Strength

Author(s): Vinayak Malaghan and Amit Goel
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: 598-603
Total Pages: 6
Language : English

Abstract: Loss of bond strength between asphalt layers i.e. between binder course and dense
Bituminous macadam may cause premature fatigue failure or slippage of top layer. In the
present study, various tack coat materials, with different application rates, are evaluated for
two objectives. First, to compare the developed interlayer bond strength using different tack
coat materials, and second, to determine the effect of different application rates on the
developed bond strength. Laboratory prepared test specimens for three types of emulsions
and five types of asphalt binder materials as tack coat material were tested for bond strength
using a shear test device. Three different application rates were investigated for each type of
tack coat material. For each application rate, three laboratory prepared samples were tested at
same temperature. It was found that the bond strength increased with increase in the
application rate. Out of the given emulsions, the one giving the highest bond strength has
been identified. Asphalt binder materials were generally found to give better bond strengths
as compared to emulsions.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00