EFFECT OF SIZE DISTRIBUTION OF POWDERS ON YIELD VALUE AND VISCOSITY OF MORTAR

Abstract

This paper aims to make it clear that relationship between size distribution of powders and rheological properties (yield value and viscosity) of mortar which have direct effects upon properties of high fluidity concrete. As the results of this study, they were found that yield value of mortar is influenced by n-value of the Rosin-Rammler which is the main factor of amount of excess water in mortar, and that vicosity of mortar is influenced by blaine surface area, which it is reason of the effect obtained by combining absorption of superplasticizer and thickness of water film.