PAVEMENT CONDITION MONITORING BY SEISMIC PAVEMENT ANALYZER (SPA)

The ability to monitor pavement condition is essential for their proper management. Nondestructive evaluation of in situ elastic material properties and detection of a number of defects can be effectively conducted using seismic methods. Seismic Pavement Analyzer (SPA) integrates five seismic techniques for this purpose. This paper contains background of seismic methods used in pavement evaluation, a description of the SPA, and results of field testing which illustrate the capabilities of the seismic methods.