EFFECT ON SOIL COMPACTION OF TIRE PRESSURE AND NUMBER OF COVERAGES OF RUBBER-TIRED ROLLERS AND FOOT-CONTACT PRESSURE OF SHEEPSFOOT ROLLERS

摘要

This report presents the results of a field and laboratory study of the effects of tire pressure and number of coverages of rubber-tired rollers and foot-contact pressure of sheepsfoot rollers on the compaction and stress-strain characteristics of a lean-clay soil. Test fills were constructed using a rubber-tired roller, with tire pressures ranging from 50 to.150 psi and compacted by 4 to 16 coverages, and a sheepsfoot roller with l4-sq-infeet loaded to produce nominal foot-contact pressure of 125 and 375 psi. Laboratory- and field-compacted samples of the clay were subjected to water content, density, CBR, and triaxial shear tests.