Authors: Deng-Fong Lin, Chien-Chiao Chao, Huan-Lin Luo, Yu-Kai Wang
Abstract: In Taiwan, Falling Weight Deflector (FWD) is commonly applied to the detection of highway and airport pavements. However, the applications of FWD to the evaluation of pavement damages for the roads with heavy traffic in city area are rarely performed. In this study, FWD was applied to the Zhongshan Rd. with heavy traffic in Kaohsiung city. Using core samplings and Dynamic Cone Penetrometer (DCP) tests can provide the thicknesses of surface, base, and subbase layers of Zhongshan Rd.. Then, the FWD deflections were calculated, and the resilience moduli were back calculated at different locations. Moreover, the FWD data was applied to the computer codes MODULUS 6.0 and FPS 21 to obtain the elastic modulus at each layer in the pavement. When the detected FWD deflection was larger than 0.635mm, it suggests that structural problems in the pavement were produced and the pavement required further maintenance.