A Review on Warm Mix Asphalt

The aim of this study is to compare various properties of warm mix asphalt with hot mix asphalt and also finding benefits of using warm mix asphalt over conventional hot mix with the help of various papers published in national and international journals. From our research we have come to the inference that warm mix asphalt is a better alternative to conventional hot mix asphalt in various manner such as environmental, economical and on the basis of various properties. The bitumen can be mixed with aggregates properly even after reducing the temperature of mixing upto 30°C. Also it has better potential as compared to hot mix asphalt. Warm mix asphalt has remarkable effects on various properties such as Marshall Stability, retained stability, resistance to deformation, moisture resistant, tensile strength and also low carbon footprints. This paper narrates different techniques used for production of warm mix asphalt different types of additives that are available.