Abstract:
THE LOAD-TRANSMISSION-TEST APPARATUS IS DESIGNED TO PROVIDE LOAD-DISTRIBUTION DATA ON FULL-SIZED PAVEMENT SECTIONS TESTED UNDER LABORATORY CONDITIONS. RESULTS FROM APPROXIMATELY 350 LOADING TESTS ARE PRESENTED. MOST OF THESE TESTS WERE RUN ON GRAVEL BASE COURSES OF VARYING THICKNESS WITH RIGID PLATES AS THE LOADING MEDIUM. A LIMITED NUMBER OF TESTS OF SINGLE AIRPLANE TIRES AND DUAL TRUCK TIRES ARE INCLUDED ALSO. THESE RUN ON GRAVEL BASES COVERED WITH ASPHALTIC-CONCRETE SURFACING, AS WELL AS ON THE BASES ALONE. IT WAS FOUND THAT THE MAXIMUM VERTICAL SUBGRADE PRESSURE VARIED WIDELY WITH TOTAL LOAD, LOADED AREA, PAVEMENT THICKNESS, AND PAVEMENT SHEAR STRENGTH. SHEAR STRENGTHS WERE MEASURED BY LARGE-SCALE TRIAXIAL TESTS. /AUTHOR/
Supplemental Notes:
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