AN EXPERIMENTAL APPROACH TO THE STUDY OF THE CREEP BEHAVIOR OF PLAIN CONCRETE SUBJECTED TO TRIAXIAL STRESSES AND ELEVATED TEMPERATURES

摘要

This report describes an experimental investigation of the creep behavior of concrete which had a nominal 28-day compressive strength of 6000 psi and which was typical of the type of concrete which is used in prestressed concrete reactor vessels.nThe experiment consisted of measuring the axial and radial strains in 6 X 16-inch cylindrical specimens subjected to 58 test conditions involving triaxial compressive stresses ranging from zero to 3600 psi two curing histories in which the concrete was either air-dried or sealed, two temperatures during the loading period (75° F and 150° F), and three curing periods prior to loading (90, 183, and 365 days).