Effect of Tack Coat and Milk Lime on the Asphalt Mix Interlayer Bond Strength

The durability of bituminous pavements depends partly on the bonding quality between the layers. This latter is improved by the use of tack coat between the layers. In the job site, milk lime is sometime spread over tack coat layer to protect this latter during the road building then allowing the tr...

Full description

Saved in:
Bibliographic Details
Published in:International journal of pavement research & technology 2022-09, Vol.15 (5), p.1127-1138
Main Author: Somé, Saannibe Ciryle
Format: Article
Language:English
Subjects:
Adhesion tests
Adhesive bonding
Asphalt mixes
Bonding strength
Building Construction and Design
Civil Engineering
Coating effects
Engineering
Engineering Sciences
Infrastructures de transport
Interlayers
Lime
Loading rate
Original Research Paper
Road construction
Room temperature
Structural Materials
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The durability of bituminous pavements depends partly on the bonding quality between the layers. This latter is improved by the use of tack coat between the layers. In the job site, milk lime is sometime spread over tack coat layer to protect this latter during the road building then allowing the traffic of the machinery. In this paper, we investigated the impact of the spreading of milk lime over the tack coat layer on the interlayer bond strength using shear bond and tensile adhesion tests (SBT and TAT). The results show an increase of the bond strength when tack coat or tack coat + milk lime is used compared to that of the reference specimens prepared without tack coat. Furthermore, no significantly impact of the milk lime on the bond strength is observed at room temperature. These tests were performed also in a second test series varying the test temperatures (− 10 °C, 5 °C and 20 °C), and the loading rates (0.5, 5 and 50 mm min −1 ) and the tack coat and tack coat + milk lime contents (0, 250 and 500 g m −2 ). The results analyzed through ANOVA showed for both SBT and TAT that the following main factors are statistically significant: tack coat, loading rate and test temperature.
ISSN:1996-6814
1997-1400
DOI:10.1007/s42947-021-00077-3