USE OF STYRENE-BUTADIENE-STYRENE (SBS) TO IMPROVE THE HOT STORAGE STABILITY OF CRUMB RUBBER MODIFIED BITUMEN
Paper Key : IRJ************456
Author: Abdul Rasheed ,Dr. Naeem Aziz,Tarique Ahmed,Rizwan Ahmed
Date Published: 06 Jan 2023
The need for transportation has been rising concurrently and gradually with the expansion of the global population, because they allow access to almost everywhere, however, the rapid deterioration of highway pavements is another effect of the growing demand for transportation. The main strategy for stopping pavement deterioration is to make the materials used to build highways more durable. To improve the formulation of bitumen modified with low-solubility components, this study investigates how to crumb tyre rubber and polymeric additives such as SBS impact the physical characteristics and hot storage stability of bitumen. Bitumen grade 60-70 was used in this study, and truck tyre rubber was crushed into crumbs with a mesh size of 30. The sample was placed in 35mm and 165mm long aluminium tubes, with the closed end at the top. The Hot storage stability, softening point, and penetration point of crumb rubber mesh no. 30 was found to be optimal at 10% CR content and 3% SBS when stored at higher temperatures at 1, 3, 5, and 7 hour intervals. The grade of bitumen decreases when the CR content remains constant at 10% and the SBS ratio in bitumen increases from 1% to 3%. The addition of SBS content (1%-3%) significantly enhanced the softening point of binder bitumen. The higher the softening point, the more temperature resistance the binder possesses.