COMPARISONS OF RESULTS OF TESTS CARRIED OUT WITH VARIOUS AUTOMATIC DRILLING APPARATUS

THIS PAPER WAS PRESENTED AT THE SPECIALTY SESSIONS OF THE 9TH INTERNATIONAL CONGRESS OF SOIL MECHANICS AND FOUNDATION ENGINEERING, TOKYO, JULY 1977. THE RESULTS OF 3 TESTS CARRIED OUT WITH AUTOMATIC DRILLING APPARATUS CAN BE INTERPRETED BY MEANS OF AN ELEMENTARY STRESS-STRAIN CURVE IN THE CASE OF UNDRAINED TESTS ON COHESIVE SOILS. RESULTS OBTAINED ON SOFT CLAY ARE COMPARED FOR THE ABOVE 3 TYPES OF TEST AS REGARDS UNDRAINED COHESION AND MODULI OF DEFORMATION. THE APPARATUS USED ARE THE AUTOMATIC DRILLING PRESSIOMETER, SELF BORING FRICTION GAUGE AND AUTOMATIC DRILLING VANE APPARATUS. FOR THE COVERING ABSTRACT, SEE IRRD ABSTRACT NO 107555.