title: Measurements of the stiffness and thickness of the pavement asphalt layer using the enhanced resonance search method.
abstract: Enhanced resonance search (ERS) is a nondestructive testing method that has been created to evaluate the quality of a pavement by means of a special instrument called the pavement integrity scanner (PiScanner). This technique can be used to assess the thickness of the road pavement structure and the profile of shear wave velocity by using the principle of surface wave and body wave propagation. In this study, the ERS technique was used to determine the actual thickness of the asphaltic pavement surface layer, while the shear wave velocities obtained were used to determine its dynamic elastic modulus. A total of fifteen locations were identified and the results were then compared with the specifications of the Malaysian PWD, MDD UKM, and IKRAM. It was found that the value of the elastic modulus of materials is between 3929 MPa and 17726 MPa. A comparison of the average thickness of the samples with the design thickness of MDD UKM showed a difference of 20 to 60%. Thickness of the asphalt surface layer followed the specifications of Malaysian PWD and MDD UKM, while some of the values of stiffness obtained are higher than the standard.
authors.affiliation: Department of Civil & Structural Engineering, Universiti Kebangsaan Malaysia, 43600 Selangor, Malaysia.
authors.forename: Nur Mustakiza
authors.initials: NM
authors.lastname: Zakaria
authors.affiliation: Department of Civil & Structural Engineering, Universiti Kebangsaan Malaysia, 43600 Selangor, Malaysia.
authors.forename: Nur Izzi Md
authors.initials: NI
authors.lastname: Yusoff
authors.affiliation: Department of Civil Engineering, Universitas Muhammadiyah, Yogyakarta 55183, Indonesia.
authors.forename: Sentot
authors.initials: S
authors.lastname: Hardwiyono
authors.affiliation: Department of Civil & Structural Engineering, Universiti Kebangsaan Malaysia, 43600 Selangor, Malaysia.
authors.forename: Khairul Anuar Mohd
authors.initials: KA
authors.lastname: Nayan
authors.affiliation: Department of Civil & Structural Engineering, Universiti Kebangsaan Malaysia, 43600 Selangor, Malaysia.
authors.forename: Ahmed
authors.identifier: 0000-0001-5018-8505
authors.initials: A
authors.lastname: El-Shafie
mesh_terms: D000465:Algorithms; D003252:Construction Materials / Q000032:analysis*; D055119:Elastic Modulus; D054459:Elasticity Imaging Techniques / Q000379:methods*; D005843:Geography; D006838:Hydrocarbons / Q000032:analysis* / Q000737:chemistry; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods; D008296:Malaysia; D008422:Materials Testing / Q000379:methods; D015203:Reproducibility of Results; D033081:Shear Strength; D013314:Stress, Mechanical; D013499:Surface Properties
chemical_list: D006838:Hydrocarbons; C006647:asphalt