Research on Pavement Performance of Water-reactive Full-proportion Cold Recycled Asphalt Mixtures
Addressing the complex process issues in the application of conventional hot-mixed recycled asphalt mix-tures,water-reactive full-proportion cold recycled asphalt mixtures,hot-mixed recycled asphalt mixtures and foamed asphalt recycled mixtures were prepared by recycled AC-20C mineral gradation.The performance of these three types of recycled asphalt mixtures were then compared.The research results showed that the performance of water-reactive full-proportion cold recycled asphalt mixtures is superior to that of foamed ones and close to that of hot-mixed ones,whose Marshall stability and dynamic stability can reach 9.52 kN and 4 228 times/mm at 7 days,respectively.Its water stability,low-temperature crack resistance,and fatigue durability also meet the requirements of current construction technical specifications for hot-mixed asphalt concrete.With time goes on,the crosslinking chelation reaction between the reactive diluent and curing agent continues,and the physical mechanical properties of water-reactive full-proportion cold recycled asphalt mixtures continue to increase as well.
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