Abstract:
OBSERVATIONS BASED ON EXTENSIVE PERFORMANCE TESTING OF FIELD COMPACTION EQUIPMENT IN BOTH GREAT BRITAIN AND THE UNITED STATES INDICATED THAT, FOR TAMPING ROLLERS, THERE PROBABLY ARE OPTIMUM VALUES OF FOOT AREA AND PRESSURE THAT WILL GIVE MAXIMUM SOIL COMPACTION. A LABORATORY INVESTIGATION WAS UNDERTAKEN TO DETERMINE THE INFLUENCE OF FOOT SIZE ON THE EFFICIENCY OF SOIL COMPACTION. FOR EACH FOOT SIZE TESTED, A SERIES OF DYNAMIC COMPACTIONS WAS PERFORMED AT VARIED WATER CONTENTS BY AN AMOUNT OF WORK THAT WAS HELD CONSTANT. THE RESULTS OF THE INVESTIGATION INDICATE THAT THE DENSITY OBTAINED FROM DYNAMIC COMPACTION IS DEPENDENT UPON THE AREA OF THE COMPACTING FOOT AND THAT THIS EFFECT ON DENSITY IS GREATER WHEN THE MOISTURE CONTENT IS NEAR THE OPTIMUM. THE OPTIMUM MOISTURE CONTENT PRODUCED BY DYNAMIC COMPACTION, HOWEVER, IS NOT AFFECTED BY THE SIZE OF THE COMPACTING FOOT. /AUTHOR/
Supplemental Notes:
Vol 40, pp 611-616, 2 FIG, 1 TAB, 3 PHOT, 7 REF. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
