EVALUATION OF THE LANE WELLS DYNAFLECT

VARIOUS CORRELATION AND REPEATABILITY TESTS ARE DISCUSSED AND COMPARED FOR THIS DYNAMIC DEFLECTION MEASURING DEVICE AND THE CALIFORNIA TRAVELING DEFLECTOMETER AND STANDARD BENKELMAN BEAM. THE DYNAFLECT WAS USED WITH SUCCESS ON OPERATIONAL PAVEMENT DEFLECTION INVESTIGATIONAL WORK FOR RECOMMENDING OVERLAYING RECONSTRUCTION. VARIOUS OTHER USES ARE ALSO REPORTED FOR FLEXIBLE AND RIGID PAVEMENTS AND FOR SURFACED AND UNSURFACED ROADWAYS. CHARTS SHOWING THE MAXIMUM CRITICAL SLOPE OF DYNAFLECT DEFLECTED PAVEMENT BASINS ARE PRESENTED FOR FLEXIBLE AND CEMENT TREATED BASES. IT WAS CONCLUDED THAT THE DYNAFLECT IS A RAPID ECONOMICAL MEANS OF OBTAINING PAVEMENT DEFLECTION MEASUREMENTS AND CAN BE USED AS A RELIABLE TOOL ON PAVEMENT DEFLECTION INVESTIGATIONAL STUDIES FOR RECOMMENDING RECONSTRUCTION OR CORRECTIVE MAINTENANCE TREATMENT. /AUTHOR/