Investigation of The Effect of Styrene-Butadiene Rubber, Ethylene-Vinyl Acetate and Acrylic Latex on The Mechanical Properties of Lightweight Concrete

Reinforced polymer concretes are new composites that are used as one of the most popular materials in the construction industry due to their high relative performance, versatility and stability compared to ordinary cement concrete. In these concretes, some weaknesses of ordinary concretes can be corrected by adding polymer. In this study, by adding three different latexes including styrene-butadiene rubber, ethylene-vinyl acetate and acrylic latex, the mechanical properties and durability of lightweight concrete with light expanded clay aggregates were measured. In this regard, 15 different mixing schemes were performed in two laboratory programs. At the first stage, the effect of each latex with 5, 7.5 and 10 percent combined with cement was investigated, and in the next stage, the simultaneous effect of latex with Silica fume. The properties of lightweight concrete were measured. The results showed that the addition of latex had a significant effect on the compressive and flexural strength of concrete. Among the latexes used, ethylene-vinyl acetate has shown a better effect.