Evaluation of the Cohesive Properties of SBS-Modified Binders at Low Temperatures

Abstract

The durability, fatigue resistance, and low-temperature behavior of asphalt layers are greatly affected by the properties of bitumen. Therefore, the composition of bitumen is frequently modified to improve the performance of asphalt mixtures. Sty-rene-butadiene-styrene (SBS) has been the most often used additive recently. Researchers are trying to improve the cohesive and adhesive properties of binders by such polymer-based additives. In this study, 160/220 penetration grade bitumen and Kraton D 1101 SBS were used. The present study contains a new evaluation for determining the cohesive behavior of SBS-modified binders at -1°C, -3°C, and -5°C. The results of this evaluation were compared to conventional and rheological test results. Penetration, softening point, viscosity, dynamic shear rheometer, and bending beam rheometer tests were therefore conducted. Finally, the results of a low-temperature tensile test were found to be consistent with the results of the other tests; hence, they also confirm the cohesive behavior of SBS-modified binders at low temperatures.

Investigation of Rutting and Low Temperature Cracking Behavior of Reactive Ethylene Terpolymer and Waste Cooking Oil Modified Bitumen

“…For a RET-modified PMB, it was impossible to support this behavior with a study in the literature directly. On the other hand, a study for an SBS-modified PMB reported an increase in 𝜆 values compared to base bitumen [57]. Based on this result, it can be said that the RET additive will have a more positive effect on the low-temperature performance of the base bitumen than the SBS additive.…”

Sequential Esterification—Diels-Alder Reactions for Improving Pine Rosin Durability within Road Marking Paint

“…The results indicated a range of softening points between 174 and 210 • C. Figure 5a shows that an increase in the rosin composition resulted in a decline in the softening point. It is worth noting that the desired softening point should be above 100 • C, with a preference for it to be above 130 • C. This preference exists because a higher softening point can increase the cohesive strength [36,37] of the binder, making the road marking paint suitable for high-temperature regions [38]. Additionally, conventional Indonesian road marking paint was tested, and the softening point was found to be 170 • C, which is the value nearest to that of the road marking paint at 26% rosin composition.…”