Simulation and Optimization of Milling Pre-treatment Technology for Used Asphalt Mixture
This study aims to control the variability of gradation and asphalt content in the milling and recycling process of aged asphalt mixtures. By using discrete element simulation,key milling parameters were identified. Subsequently,field milling tests on layered typical pavement structures were conducted to analyze the impact of milling parameter variations on the gradation and asphalt content of reclaimed materials,ultimately determining the milling recovery process for the intermediate layer (AC-16) of existing pavements. The results indicate that milling speed significantly affects the gradation and asphalt content of the reclaimed material. An optimal milling speed balances particle fragmentation and gradation refinement,enhancing the quality of recycled materials.
aged asphalt mixturepretreatment technologydiscrete element simulation
万方数据
维普
