Title: Effect of the bitumen type on the temperature resistance of hot mix asphalt
Abstract: Bitumen is a material that binds the aggregates of roadways to allow vehicles to travel in the best conditions of safety and comfort. The bitumen types currently used in pavements in Morocco are pure bitumen (PB) of 20/30 and 35/50 classes and polymer-modified bitumen (PMB). Given the large variety of bitumen types, it is important to study the effect of bitumen type on the thermal resistance of asphalt mixes. The purpose of this study is to examine the inherent characteristics of different types of bitumen and to suggest the one that best adapts to Moroccan meteorological conditions. Bitumen identification, including penetrability at 25 °C, softening temperature, and Dynamic Shear Rheometer (DSR) tests were carried out in order to study the adaptation of these materials to local temperatures. Rutting tests were also executed on the asphalt mixture. Test results have shown that modified bitumen allows improving the resistance of bituminous materials against high temperatures and preventing the rutting phenomenon.
Publication Year: 2021
Publication Date: 2021-01-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 3
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