PSPA Data Summary PSPA Data
P-501 PCC Surface Mix
Portable Seismic Pavement Analyzer (PSPA) data was collected on the surface of all but the top pavement layers.
This data provides the modulus of each pavement layer through the use of ultrasonic surface waves.
The Econocrete provided an average modulus value of 2440 psi while the other pavement layers provided an average under 100 psi.
PSPA device not connected to test laptop.