EXPERIMENTAL STUDY ON YIELD VALUE MODEL OF FRESH MORTAR DEPENDENT ON PRESSURE AND TIME

Abstract

This paper describes experimental results on yield value model of fresh mortar dependent on pressure and time obtained by a simple shear test, and the conclusions are as follows. 1. The relationship between yield value and time is linear, at least one hour after mixing of mortar. 2. The cohesion increases depending on the time, but the angle of internal friction hardly changes. 3. The change of cohesion by time becomes remarkable as the pressure increases. 4. The change of parameters in the model by water-cement ratio is similar to that of concrete slump.