اختيار المادة الرابطة الاسفلتية المناسبة بالاعتماد على الظروف المحلية الليبي

Abstract

The specifications of the asphalt binder in Libya are based on the penetration grading system, which relies on Imperial tests. The asphalt cement with a grade of (60/70) is the asphalt binder used in the implementation of asphalt paving in Libya.

The performance of asphalt paving in the coastal northern regions differs  from its performance in the central and southern regions of Libya; the paving performance in the coastal areas was generally good, while it was not acceptable in the desert areas, where early damages appeared on most desert roads due to the rapid aging of the asphalt binder and the significant temperature variations of the pavement throughout the day and across the seasons.

This research aims to select the appropriate asphalt binder for the State of Libya based on local conditions and according to performance grade. To achieve the research objectives, a scientific methodology was adopted, which involves collecting air temperature data from meteorological stations and determining their locations, and using models from the Strategic Highway Research Program (SHRP) to calculate pavement temperature.

This study shows that the suitable asphalt binder for desert roads is Performance Grade (PG76-10), while the grade (PG70-10) is suitable for coastal areas.