Influence of Polymer-Cement Ratio, Water-Cement Ratio and Air Content on Flow of Fresh Polymer-Modified Mortar and Equation for Predicting Its Flow

摘要

This paper presents the experimental results ofthe flow property of fresh polymer-modified mortars havingcement/sand = 1/3 (by mass) with varying water-cement ratio(W/C) and air content at the various polymer-cement ratios(P/C), using carboxylic styrene-acrylic ester co-polymer dispersions.The flow property of the fresh polymer-modified mortar wasaffected by the P/C, W/C and air content, especially, the P/C hada marked effect on the flow property.The experimental regression equation for calculation of the flowvalue is derived from P/C, W/C and the air content as thecoefficient and constant. The physical meaning of the effect ofeach item in the equation on the flow property was explained by the author.