| abstract |
The invention discloses a warm-mix asphalt modifier and a preparation method thereof, comprising the following steps: a) weighing each component by weight percentage; b) mixing alkane oil and rubber cracking oil and heating the mixture to 100-120°C ; c) adding a polymer modifier, controlling the temperature within the range of 100-120°C, and stirring at a speed of 1000r/min with a high-speed shear for 60-120min to completely dissolve the polymer; d) at a temperature of 100-120°C Continue to add additives within the range, manually stir and keep warm for 10 minutes, and finally add waste plastic cracking wax, stir with a high-speed shear machine at 1000r/min for 60-120 minutes, and cool to room temperature to obtain a warm-mix asphalt modifier. The warm mix agent provided by the invention can reduce at least 50°C the construction operation temperature of the warm asphalt mixture, which has the environmental benefits of energy saving and emission reduction; at the same time, the low temperature crack resistance of the mixture has been greatly improved, and it can ensure its High temperature performance and fatigue performance are comparable to Sasobit warm mix asphalt mixture. Compared with warm mixing agents such as Sasobit, the warm mixing agent obtained by the invention has lower cost, more stable performance and good economic benefits. |