Modified asphalt is a mixture of rubber, molecular polymer, sodium asphalt sulfonate resin, rubber powder or other modifiers and materials. The performance of asphalt is changed by processing methods, so how to cool modified asphalt?

1. The modified asphalt is gradually frozen and condensed into a strip of liquid with the movement of the chain conveyor, taken out from the pool, put into the conveyor belt through the nozzle, and then unloaded or unloaded into the asphalt storage tank. The modified asphalt is put into the asphalt freezing storage tank by the secondary boiler and frozen to 150 ° C ~ 200 ° C, and then put into the feeder, from the feeder, it flows to the pool in a thin stream with a diameter of 6~12 mm. Mobile chain conveyor in . Non-metallic chain conveyors are used for freezing bitumen.

2. Put the modified asphalt into a closed horizontal or vertical freezing storage tank, and continuously freeze it only through the slack pipe and the air (6~8 hours in winter, 3~4 hours in winter), and freeze to 150°C~200°C. °C, and then placed in a bitumen pool. Modified asphalts modified with rubber or other high-component compounds can be used to pave high-speed rail roads, airport journeys, and major sodium asphalt sulfonate traffic corners to withstand high loads. It is primarily used for pavement correction and as an adhesive for roofing materials.

However, modified asphalt tends to cause segregation after cooling and heating, which has an impact on softening point and ductility. Therefore, instead of cooling the physical asphalt, the heat preservation should keep mixing, and the heat preservation time should not be too long.

Modified asphalt is an asphalt binder made by adding additives such as rubber, resin, macromolecular polymer, ground rubber powder or other filler modifiers, or selecting fine oxidized asphalt to improve the performance of asphalt or asphalt mixture. . It has two mechanisms, one is to change the chemical composition of the asphalt, and the other is to make the modifier evenly distributed in the asphalt to form a certain spatial network structure.

Modified asphalt has excellent high temperature and low temperature resistance in areas with large temperature differences. It has excellent rutting resistance combined with excellent elasticity and resistance. The anti-fatigue function of the pavement has been improved, especially on the highway with heavy traffic and severe overload, which can reduce the deformation of the pavement. The bonding strength is particularly strong, and the tensile strength of the pavement can be significantly improved after encountering water, and the water stability of the asphalt can be greatly improved.If you have any other questions, please contact us sodium asphalt sulfonate for details or contact us directly.

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