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

• Published in: Mechanics of composite materials Vol. 46; no. 5; pp. 505 - 512
• Main Authors: Veyalis, S., Gnip, I. Ya, Vaitkus, S, Kershulis, V.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.12.2010; Springer
• Subjects: Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; Cold flow; Composites; Compressing; Compressive properties; Creep (materials); EPS; Glass; Intervals; Materials Science; Natural Materials; Plates; Polystyrene; Solid Mechanics; Stresses; creep strain; expanded polystyrene; domain of linear creep; long-term compression
• ISSN: 0191-5665; 1573-8922
• DOI: 10.1007/s11029-010-9167-5

The results of a study on the creep of EPS 200 plates under compressive stresses σ c in the interval 0.22 ≤ σ c /σ 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 ≤ σ c /σ 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%.