Author : Shaleha I. Vahora and C. B. Mishra

Warm mix asphalt (WMA) is a new technology which helps mixing, laying and compaction of asphalt at temperature lower than hot mix asphalt by the addition of additives. An attempt is done to evaluate the improvements in designing properties of the binder VG30 with and without warm mix additive. As well Marshall Mix design is done on VG30 for DBM II layer with and without warm mix additives i.e. EvothermJ1 and Rediset LQ in reasonable measurements of 0.3%, 0.4% and 0.5% for Evotherm J1 and 0.4%, 0.5%, and 0.6% for Rediset LQ at lower temperature according to the provisions of codal practice, with no settlement with quality. Additionally the performance evaluation of asphalt mixtures are done with respect to moisture damage, fatigue, and rutting cracking via laboratory tests. Further the comparison of two additives is done. The imprint of tests proposes the capable inclination to go for using warm mix additives into the standard of clearing things so that the temperature is cut down to 120°C with no compromise in quality.

Keywords: WMA (warm mix asphalt), Dense bitumen macadam (DBM), Marshall Mix, Evotherm J1 ,Rediset LQ Chemical, Aggregates, Retained stability, Refusal density, Indirect tensile strength

Article published in International Journal of Current Engineering and Technology, Vol.7, No.3 (June-2017)