Addition to the CRMBs, Warm Mix Asphalt (WMA) is one of the most common modified bitumen with other additives. WMA is the generic term for a variety of technologies that allow producers of Hot Mix Asphalt (HMA) pavement material to lower temperatures at which the material is mixed and placed on the road. Reductions of so to 100° Fahrenheit have been documented. Such drastic reductions have the obvious benefits of cutting fuel consumption and decreasing the production of greenhouse gases.
Here are the advantages of using WMA :
- Significant reduction in energy carriers' consumption at asphalt plants: Since the asphalt mix temperature changes on a linear semi-logarithmic basis versus energy consumption, up to 20-percent reduction in the mixing temperature can reduce energy consumption by up to 45 percent in the asphalt plants. This issue becomes more important when we take into account the fact that lower consumption of energy carriers in the asphalt plants would reduce fuel costs.
- Increasing the interval of carrying asphalt mixes due to the need for lower temperature for aggregation will facilitate road operations.
- Road operations in lower temperatures will significantly reduce road construction operations, earning road builders significant economic benefits.
- Significant reduction in the pollution produced by fossil fuels and vapours of heating steam particularly in the cities is a significant advantage of WMA.
- More safety for road construction staff due to low-temperature mixes and less danger of fire for workers KB Oil WMA, formulated in the R&D unit, can reduce the mixing temperature between 15 and 20 percent and the aggregation temperature between 10 to 15 percent without having to change the plant's structure. Studies on the performance of this product indicate that this product does not cause any loss in the mechanical and rheological specifications of bitumen and it will even improve the performance of bitumen. Application of this product is very easy because it does not require any specific changes in the production line.