AGGREGATE INTERLOCK AT JOINTS IN CONCRETE PAVEMENTS

Abstract

LOAD TRANSFER ACROSS JOINTS IN CONCRETE PAVEMENTS THROUGH SHEAR DEVELOPED BY INTERLOCKING AGGREGATE WAS INVESTIGATED IN THE LABORATORY BY SIMULATING THE REPETITIVE MOTION OF TANDEM TRUCK WHEELS ACROSS A JOINT. EFFECTIVENESS OF LOAD TRANSFER WAS FOUND TO DEPEND ON LOAD MAGNITUDE, NUMBER OF REPETITIONS, SLAB THICKNESS, JOINT OPENING, SUBGRADE BEARING VALUE, AND AGGREGATE ANGULARITY. A SUMMARY STATISTIC CALLED ENDURANCE INDEX IS USED TO RELATE THE SIGNIFICANT VARIABLES TO TEST PERFORMANCE. /AUTHOR/