فهرست نشریات علمی دسترسی آزاد ایران

In the current research, polyvinyl alcohol (PVA) and sulfur were applied in order to improve the rheological performance of asphalt as well as strengthen its ability toward standing up against severe weathering as well as repeated heavy loads. The research was done in a number of steps. In the first step, the best conditions for the reaction process were ascertained by identifying the favorable temperature as well as the best reaction time. In the subsequent step, the best quantity of sulfur was ascertained, and it was discovered that incorporating 0.5% by weight of nano-sulfur yielded the most desirable outcomes. Then, different ratios of PVA and 0.5% by weight of nano sulfur were mixed with the asphalt. The use of modified asphalt in paving was determined based on the measurements conducted (ductility, penetration, softening point, percentage of separated asphaltene, chemical immersion, and Marshall test). These measurements revealed good asphalt models that can be used in paving.