Timely and cost effective maintenance activitiesare required to perform well under changing climatic conditions during service lifeof a hot mix asphalt (HMA) pavement. Pavement maintenance and rehabilitationprocess plays an important role for cost-effective pavement life cycle. Nondestructive testing methods provide to gettingsignificant and rapidly information about the pavement without causing anydamage on the surface of the pavement.In this paper, for early detection of delamination of asphalt surface layers, theresults of extensive tests performed with deflection-based and seismic-basednondestructive devices are presented. The technologies in this field arebriefly overviewed and obtained results are compared from various aspects.
Saltan et al. (Wed,) studied this question.