Warm Mix Asphalt (WMA) is a variant of the asphalt mixes that allow to reduce the mixing and paving temperature, by 200C – 400C lower than the Hot Mix Asphalt.
Warm-mix asphalt has been used successfully in Europe for more than 10 years. In the United States, WMA projects are now in more than 40 States.
Following are some of the benefits of Warm Mix Asphalt that has promoted the increased usage of WMA for road construction:
Lower temperatures of the asphalt mix implies the reduction in the fuel required. The lower temperature required for heating inadvertently reduces the carbon emissions released in to the ozone.
The reduced fumes/emissions offers better working conditions for the asphalt workers while paving, as workers inhale less smoke and dust, especially in closed spaces like tunnels where ventilation is comparatively lesser.
Warm Mix Asphalt is far more cost effective as compared to the hot mix with virtually identical results.
It can also be easily transportable from the plant to the construction site, which reduces the efforts and saves the time by facilitating easier laying.
Faster cooling of WMA reduces the construction time, which in turn saves the cost as the men and machinery are required for a shorter time span.
Warm Mix is the future of asphalt, providing both environmental benefits as well as better working conditions, thus allowing us to take a step towards a greener & sustainable future.