2006 · 17 citations · 6 references
EngineeringCivil EngineeringMaterials EngineeringMaterials CharacterizationPavement EngineeringUltrasoundAsphalt MaterialsCondition MonitoringPavement DesignPavement EvaluationPavement MaterialsUltrasonicsBituminous Material TestingHot Mix AsphaltNon-destructive TestingNon-destructive Testing Of PavementsPavement Condition IndexShort-time Fourier TransformWave AttenuationWavelet Transform
The purpose of this paper is to present a study which tested hot mix asphalt (HMA) using three different methods in an attempt to discern wave attenuation and frequency content to develop a suitable condition index for HMA mixtures based on wave characteristics. This study employed three signal processing techniques, Fourier transform, short-time Fourier transform, and the wavelet transform. The results indicate that the condition index based on the amplitude measurement has the potential to provide a reliable assessment of the quality of HMA mixtures. An efficient quality control and acceptance (QA/QC) procedure for constructing hot mix asphalt (HMA) pavements requires the complimentary use of traditional destructive test methods and innovative non-destructive testing (NDT) methods. Traditional wave-length measures are inadequate and therefore this study reveals new, more efficient means of testing.
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