Cavitation Bubble Numerical Simulation and Properties of SBS Modified Asphalt Prepared by Ultrasonic-assisted High-shearing
The ultrasonic cavitation effect can promote the modification of asphalt,Fluent fluid simulation software was used to conduct numerical simulation of ultrasonic cavitation bubbles in molten SBS modified asphalt fluid,and the morphological changes of a single cavitation bubble during a period of expansion-compression and the pressure changes of the entire fluid domain were analyzed.The instantaneous high temperature and high pressure environment and the energy released when a single bubble compressed or collapsed were calculated.At the same time,ultrasonic assisted preparation of SBS modified asphalt experiment and the conventional performance test showed that ultrasonic improved its high and low temperature performance.The results of the segregation experiment and fluorescence microscopic images showed that ultrasound refined SBS particles and improved the dispersion effect of SBS particles in asphalt system.The change of viscosity after aging and FTIR before and after aging indicated that ultrasonic technology improved the anti-aging property of modified asphalt.
SBS modified asphaltUltrasonic processUltrasonic cavitation bubbleNumerical simulation
万方数据
维普
