Asphalt is a traditional water-repellent material commonly used in road pavement. The use of recycled rubber powder in asphalt not only solves the environmental pollution problem caused by waste rubber, but also improves road performance and prolongs service life. So in the production of renewable rubber modified asphalt production and processing, the production process will be its performance impact?
1, usually in the production of recycled rubber modified asphalt, the modified temperature has the greatest impact on the modification effect: the same process conditions, the higher the modified temperature, the worse the high and low temperature performance of recycled rubber modified asphalt, the resistance The narrower the temperature range; the tensile strength of the modified asphalt will increase with the increase of the modification temperature.
Second, the modification time has a certain impact on the performance of modified rubber modified asphalt: the tensile strength of modified asphalt decreased with the increase of modification time; the viscosity of modified asphalt first increased with the extension of modification time After the big reduction.
The stirring speed will also affect the high and low temperature properties, tensile strength and viscosity of the modified rubber modified asphalt: The effect of stirring speed on the high and low temperature performance of modified rubber modified asphalt is better than the modified temperature, modified time The influence is much smaller; the stirring speed is accelerated, the tensile strength of the modified asphalt slightly increases; the viscosity of the modified asphalt will keep decreasing as the stirring speed accelerates.
Modified rubber modified reclaimed asphalt temperature, modification time and stirring speed should be its performance of the three major factors, enterprises can choose according to their own conditions, the best modified modified temperature, modification time and stirring speed . In actual production, the following set of data can be used as a reference: modification temperature 210-230 ℃, modification time 2-2.5h, stirring speed 60-120r / min.
Hebei Hongyun recycled plastic factory production of variegated modified asphalt plastic powder fineness of about 36 in the asphalt modification process, can increase the asphalt flow resistance, wear resistance and anti-aging properties, improve flexibility and elasticity and low temperature Under the anti-cracking ability, the use of simple high degree of compatibility, by the hundreds of enterprises to reduce the average cost of about 20%.
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