Warm mix asphalt technology is a truly low-carbon paving technology with high energy saving and low emissions. It can reduce the construction temperature by 40 to 60 degrees Celsius while maintaining good performance of the asphalt mixture, effectively alleviating the environmental problems caused by the hot mix asphalt mixture process.

1. Control of mixing temperature of warm mix asphalt

During municipal road construction, compared with traditional hot mix asphalt mixture, the construction temperature of warm mix asphalt mixture has been effectively reduced. For the mixing of warm mix asphalt mixture, when adding mineral powder and warm mix additives, part of the hot material will be lost to a certain extent. Therefore, the aggregate heating temperature should be set slightly higher than the discharging temperature. In addition, according to the actual construction conditions, the temperature of the warm mix asphalt  discharging should be adjusted, and the construction personnel should strictly control the mixing temperature to meet the construction requirements.

2. Transportation of warm mix asphalt

When transporting the warm mix asphalt by trucks, insulation measures should be taken, especially in winter. Due to the low temperature, the temperature of the asphalt mixture decreases quickly, which requires relevant personnel should insulate the transport vehicles. Foam partitions can be installed on the sides of the transport vehicles, which can effectively reduce the temperature drop of the asphalt mixture during transportation. In addition, a digital display plug-in thermocouple thermometer can be used to detect the temperature of the asphalt mixture when it leaves the factory and when it is transported to the construction site.

3. Paving of warm mix asphalt mixture

When paving warm mix asphalt, the penetrating layer oil and sticky layer oil should be spread on the asphalt surface layer, and it should be ensured that the spread sticky layer oil has enough time to evaporate. When construction is carried out in low-temperature seasons, paving should not be carried out when the temperature is below zero and the road surface is wet. If the road surface freezes, it will have a greater impact on the bonding between layers, thus reducing the service life of the road surface.

4. Rolling of warm mix asphalt mixture

When carrying out rolling construction of warm mix asphalt mixture, the appropriate rolling method should be selected in accordance with the requirements of construction-related specifications. In order to improve the smoothness and compaction of the road, if the asphalt does not move or crack during initial compaction, the rolling operation should be carried out at a high temperature after paving. When a steel wheel roller is used for water sprinkling, its humidity should meet the standard requirements of construction and no more flowing water is allowed to be produced. When using rubber tire rollers for painting, a broom equipped with vegetable oil should be used to improve the quality of the rolling construction. Find more asphalt plant to visit Ltasphaltplant.com.