Improving Iraqi Asphalt Paving Using Natural and Synthetic Additives

Improving the rheological properties of Iraqi asphalt used in paving through the addition of natural and synthetic polymers has become essential to enhance pavement performance under harsh climatic conditions. This study focuses on evaluating the standard specifications of Iraqi asphalt before and after modification to determine the impact of polymer additives on its physical and mechanical behavior. Laboratory tests were conducted to assess parameters such as penetration, softening point, viscosity, and temperature susceptibility. The results indicate that the inclusion of specific polymers significantly improves the asphalt’s elasticity, stability, and resistance to deformation. Furthermore, the modified asphalt demonstrated better durability and adaptability to temperature variations, reducing the risk of cracking and rutting in hot weather regions. These findings confirm that polymer modification can effectively increase the efficiency and longevity of Iraqi asphalt, making it more suitable for modern road construction needs.