Spectral Analysis of Acoustic Emission of Cold Cracking Asphalt

Acoustic emission is one of perspective nondestruct ive methods for evaluations of pavement materials such as concrete and asphalt. However, this method has not been applied for cold cracking asphalt due to some fracture effects. Methodology of acoustic emission measuring and its parameters evaluation also require some adjustment. This paper is devoted to applications of spectral analysis for investigation of acoustic emission of cold cracking asphalt. Acoustic emission data were analyzed versus temperature and load conditions versus a set of spectral and statistical characteristics. MATLA B codes for UNIX supercomputer were used for data processing. Proposals for future development and practical applications are presented in this work.

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