Author : Devendra K. Patel, C. B. Mishra and A. A. Amin

In India, rapid growth in urbanization fuelled by growth in the industrial and service sectors resulted in rapid growth of laden vehicles in limited road space to withstand high stresses with minimum maintenance. Also increasing concerns on environment and greenhouse effect, increased construction prices led to the development of new technologies. Warm Mix Asphalt (WMA) is one of newest technologies that allow mixing, production, placing and compaction of asphalt mixes at significantly lower temperatures due to chemical modification of the bitumen as compared to the traditional Hot Mix Asphalt (HMA) practice. Lower temperatures result in reduced fuel usage, fume exhausts, greenhouse gas emissions, reduces wear and tear, while enhancing worker health and safety conditions during pavement construction. WMA practice could be a potential step towards preserving resources and can have a significant impact on transportation construction projects, while addressing growing environmental sustainability. It is utmost important to investigate WMA technologies with and without PMB 40 grade mix to attain the required performance of pavement characteristic.

Keywords: Warm mix, Rediset, PMB 40.

Article published in International Journal of Current  Engineering  and Technology, Vol.4,No.3 (June- 2014)