Deformability of an expanded polystyrene EPS 200 under long-term compression

Abstract

The results of a study on the creep of EPS 200 plates under compressive stresses c in the interval 0.22 c 10% 0.80 are presented. From experimental data, the domain of linear creep of the material in the interval of compressive stresses is determined. Under variations of the stress on the interval 0.22 c 10% 0.36, the prognostic value of creep strain of the EPS 200 plates for a lead time of 25 years is found to be 2.4%, with a coefficient of variation equal to 18%.