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EFFECT OF ASPHALT TEXTURE TACK COAT SERIES
These tests were performed also in a second test series varying the test temperatures (− 10 ☌, 5 ☌ and 20 ☌), 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). Furthermore, no significantly impact of the milk lime on the bond strength is observed at room temperature. 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. 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). 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. This latter is improved by the use of tack coat between the layers. The durability of bituminous pavements depends partly on the bonding quality between the layers.