The Strength of Soils as Engineering Materials

Abstract

THE STRENGTH OF SOILS IS STUDIED IN RELATION TO ' /1/ THE FAILURE CRITERIA WHICH ARE USED TO EXPRESS THE RESULTS OF STRENGTH TESTS AND WHICH REFLECT THE INFLUENCE, IF ANY, OF THE INTERMEDIATE PRINCIPAL STRESS, /2/ THE BEHAVIOR OF SOILS UNDER THE HIGH STRESSES IMPLIED BY THE GREATLY INCREASED HEIGHT OF EARTH AND ROCKFILL DAMS UNDER CONSTRUCTION, /3/ THE DIFFICULTY OF DETERMINING WHAT IS THE IN-SITU UNDRAINED STRENGTH OF A SOIL, DUE TO THE INFLUENCE BOTH OF ANISTROPY AND OF UNREPRESENTATIVE SAMPLING, AND /4/ THE INFLUENCE OF TIME ON THE DRAINED STRENGTH OF SOILS.