Experimental Analysis on Structural Response of Asphalt Pavement

Analysis of the pavement layer moduli is determined from a back-calculation of falling weight deflectometer(FWD) data and the measured stiffness moduli of asphalt layer cores,then the pavement response is calculated using a theoretical model,measured response compared to theoretical values.Layered elastic theory was used to firstly back-calculate the layer moduli and then three different models were used to forward calculate the strain and deflection.The models were layered elastic theory(LET) ,the method of equivalent thicknesses(MET) with linear elastic and the finite element method(FEM) where asphalt layer may be viscoelastic.The results showed that the calculation structure response from FEM is most consistent with measured results.