STUDY ON EFFECTS OF SHEAR LAYER THICKNESS AND FACTORS OF AGGREGATE ON RHEOLOGICAL PROPERTIES

Abstract

In the present paper, it is tried to evaluate quantitatively the theological constants of fresh concrete based on the shear box test. In this study, the effects of the thickness of shear layer, the volume fraction of aggregate and the shape of aggregate particle on the Theological constants of high-fluidity concrete with the water cement ratio of 45% under low shear rate smaller than 1(1/s) are investigated quantitatively. Moreover the effects of the volume fraction of aggregate and the shape of aggregate particle on the slump-flow value and the slump-flowing time are discussed quantitatively.