The Effect of adding petroleum resins C9 and C5 on the properties of Qayyarah asphalt

The effect of petroleum resins on Al-Qayyarah asphalt was studied to modify its chemical, physical, and engineering properties. Due to climate change, rising temperatures, and increased loads, traditional asphalt has become unsuitable for paving main roads, leading to the search for alternatives or modifications to the properties of conventional asphalt. Therefore, petroleum resins of both aliphatic and aromatic types were used due to their rapid mixing compatibility and being solid materials. In addition, bonding materials like sulfur help with the interlocking and stability of asphalt mixing over time bonding petroleum resins with asphalt compounds through free radical reactions. Petroleum resins were used at a rate of up to 5% of the weight of the asphalt. The effect of both types was significant on the properties of the asphalt, as the aromatic resins had a considerable impact achieving a Marshall stability of up to 22KN and indirect tensile strength of 1.985KPa to determine its resistance to heat and moisture. Therefore, the addition of petroleum resins to Al-Qayyarah asphalt significantly improves the performance of the asphalt, provides excellent storage stability with the asphalt, and increases its load-bearing capacity.