ABSTRACT
Abstract Polymer-modified mortars using an unsaturated polyester resin (UP) are prepared
with various mix proportions by two mixing methods, given three types of curings,
and tested for flexural and compressive strengths. The influences of process conditions on the flexural and compressive strengths of UP-modified mortars are
examined. As a result, increasing polymer-cement ratio chiefly causes an
improvement in the flexural strength of UP-modified mortars, and increasing
water-cement ratio brings about marked reductions in their flexura? and compressive
strengths. The highest flexural and co npressive strengths are obtained at
water-cement ratios of 5% or less regardless of the polymer-cement ratio. Furthermore, the strengths of UP-modified mortars are decreased with an increase in the water-polymer ratio. The production of UP-modified mortirs is possible by applying either of Mixing Methods A and B.
