Investigating the effect of epoxy resin on the durability and damage of Freeze-thaw cycles,s in Stone-matrix asphalt containing ceramic fibers

There has always been a great desire to implement asphalt mixtures with better resistance and durability. Stone matrix asphalt (SMA) is known as one of a kind. Examining the studies done on SMA asphalt and the importance of producing and implementing more durable and economical ways has made it important to increase the knowledge of the effect of new additives in this asphalt. Due to its special gradation and more optimum bitumen consumption in comparison with other asphalt mixtures, the use of polymer additives and different fibers has drawn the attention of researchers for its modification. In this research, three different percentages of epoxy resin (10%, 15%, and 20%) were added into bitumen as a thermoset polymer modifier, also ceramic fiber was used as a mixture stabilizer. To study the modification effect, the chemical and physical properties of the modified bitumen were first investigated and then bitumen drainage, Cantabro, and freeze-thaw cycles tests were carried out on the samples. The analysis of the results shows an overall improvement in the performance of asphalts with modified bitumen and ceramic fibers compared to the control samples.