DISTINCTION BETWEEN POWDER AND SAND IN FRESH MORTAR

Abstract

The objective of this study is to propose the method for estimating the water retaining factor for sand and the flowing factor for sand with properties of particle size distribution and particle shape and to consider the effect of fine sand and coarse powder on the value of mortar flow. From the result obtained, it became clear that the border particle size was about 0.09mm in case of this sturdy. Considering fine sand under 0.09mm as powder, and considering coarse powder over 0.09mm as sand, the value of the calculation of the relative flow area of mortar gave good agreement with the value of the experiment.