Experimental Study on Epoxy Polystyrene as A Partial Substitution of Fine Aggregate of Concrete Mixture

This study has an objective to assess the utilization of grains epoxy polystyrene, or better known as Styrofoam that have light density, to serve as a partial substitution of sand in concrete materials. On the use of 5% EPS concrete compressive strength characteristics obtained amounted to 18.69 MPa (down approximately 20.9% of the normal mixture). While the use of 10% EPS, decrease concrete compressive strength of 21.67% ie 18.51 MPa. Modulus of elasticity of concrete decrease with the addition of the percentage of EPS, the use of EPS up to 40% decrease modulus of elasticity to be 16.219 MPa (down around 21%). The relationship between the modulus of elasticity (E), Specific Gravity (wc), compressive strength (f / c) and the percentage of EPS (p) can be expressed in an empirical equation as follows: E = (wc)1,5·0,05·exp(−0,23·p)·√f / c.