Analysis of Mechanical Performance of Cold Recycled Pavement with Foamed Asphalt

Abstract:

Based on a comparative study and an anlysis of the mechanical performance of the foamed asphalt recycled mixture for different road structures with ANSYS finiteelement method, a conclusion is drawn that the stress and strain of the foamed asphalt recycled base are different under different road combinations at different curing periods. Results show that the thickness of the foamed asphalt recycled base should not be less than 15 cm;the foamed asphalt pavement is strengthening with time.Composite base (Flexible materials + Semirigid materials) can increase the carrying capacity of the road significantly. The conclusion of the paper contributes a great to the guiding structure design of foamed asphalt recycled pavement.

Key words:foamed asphalt; cold recycling; finite element; mechanical performance