Effects of Rediset Additive on the Performance of WMA at Low, Intermediate, and High Temperatures

Abstract

Utilizing polymers with asphalt mixtures is one solution to improving the performance of asphalt mixtures. Warm mixed asphalt (WMA) technology has begun to be widely used; however, hot mixed asphalt (HMA) is the most common paving procedure worldwide. HMA has some side effects, such as increasing emissions of exhaust gases, which lead to environmental pollution and air pollution and increasing energy consumption. Thus, utilizing WMA would help to improve asphalt mixture performance, reduce mixing and paving temperatures, reduce CO2 emissions, and save energy. In this study, two WMA additives (Sasobit (M1) and Rediset LQ-1200 (M2)) are used with the control HMA to investigate and evaluate the asphalt mixture’s performance and the effects of WMA additives. Rediset LQ-1200 is a new version of materials classified under chemical additives in WMA. The Sasobit and Rediset LQ-1200 dosages were 1.5 and 0.5 percent by binder weight, respectively. Different mixture and binder tests were utilized, such as penetration, DSR, BBR, IDT, CML, HLWT, and APA. To simulate long-term performance, laboratory conditions of single or combined effects were used. The results showed that M2 had more cracking resistance and durable performance with low rutting resistance, while M1 had more rutting resistance and less moisture suitability, with low cracking resistance and durability.