This research aimed to investigate the attenuation mode of the layer modulus of asphalt pavement in accelerated pavement testing (APT). A full-scale experimental section was constructed and tested using the APT facility. Two non-destructive testing (NDT) methods, named falling weight deflectometer (FWD) technique and portable seismic property analyzer (PSPA) test, were used to obtain the layer moduli of asphalt pavement during the APT test. The variation patterns of layer moduli obtained by FWD and PSPA tests were calculated and compared after the temperature was corrected to 20 ℃. It was found that the variation pattern of surface layer modulus based on field FWD measurements was consistent with the one measured from PSPA tests. That is the modulus of the surface layer increases with the APT load repetitions firstly and then decreases with the rise of the repetitions. The modulus values of the surface layer measured from PSPA tests are obviously larger than those backcalculated based on deflection basins. The ratio of the measured surface layer modulus based on the PSPA test to the backcalculated one based on the FWD test ranges between 2.06 and 2.71. The backcalculated base layer modulus always declines with the increasing loading repetitions. The attenuation patterns of the surface layer modulus and the base layer modulus in the damage stage are described as Ea=421100*N-0.6119 and Eb=128000*N-0.1096, respectively.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Modulus attenuation of semi-rigid asphalt pavement layer in accelerated pavement testing with MLS66


    Beteiligte:
    Yue Hu (Autor:in) / Lijun Sun (Autor:in) / Huailei Cheng (Autor:in) / Yi Li (Autor:in)


    Erscheinungsdatum :

    2023




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt





    Structural Modulus of Semi-Rigid Based Course for Asphalt Pavement

    Hu, C. / Sun, L. / China Communications and Transportation Association; Transportation & Development Institute (American Society of Civil Engineers) | British Library Conference Proceedings | 2007


    Analysis of Dynamic Response for Semi-rigid Base Asphalt Pavement Using Accelerated Pavement Test

    Cao, Rongji / Wu, Chunying / Zheng, Bingfeng et al. | TIBKAT | 2020