Open AccessEvaluation of moisture-induced damage of stone matrix asphalt mixture with polymer modified binder
Author(s) -
Karim H. Ibrahim Al Helo,
Zaynab I. Qasim,
Duaa A. Khalaf
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/737/1/012121
Subject(s) - asphalt , materials science , composite material , moisture , polypropylene , aggregate (composite) , asphalt pavement
Moisture – induced damage is one of the most common reasons for the premature deterioration of Hot Mix Asphalt (HMA) pavements. Over the years, extensive research has been carried out by scientists and engineers on this subject; however, pavements still succumb to early failure from infiltrating moisture. The purpose of this research is to study the moisture induced damage performance of Stone Matrix Asphalt (SMA) asphalt pavements using Styrene Butadiene Styrene (SBS) polymer modified asphalt binder. To achieve the objective of this research the Superpave gyratory compactor was used for preparing the asphaltic samples and determining the volumetric properties of mixtures. The physical properties of aggregate, bitumen and other mix materials were assessed and evaluated with the laboratory tests. The mixtures were prepared using penetration Graded (40-50) bitumen and a chemical named Polypropylene Fiber was used as a stabilizing additive. Volumetric properties, Marshall Stability, behaviour to moisture action etc. were determined in laboratory. From the results it is seen that addition of SBS to the asphalt binder has significantly improved the cohesion as well as adhesion properties of the asphalt binder, and hence the stripping performance. Therefore, it can be concluded that the SBS is suitable to be used as a modifier in order to enhance the properties of the asphalt binder and thus improving the performance of asphalt in and SMA mixes.