Selected Engineering Properties and Applications
of EPS Geofoam

Ahmed Fouad Elragi, PhD
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Abstract

Expanded polystyrene (EPS) geofoam is a lightweight material that has been used in engineering applications since at least the 1950s. Its density is about a hun-dredth of that of soil. It has good thermal insulation properties with stiffness and compression strength comparable to medium clay. It is utilized in reducing settlement below embankments, sound and vibration damping, reducing lateral pressure on sub-structures, reducing stresses on rigid buried conduits and related applications.

This study is an overview on EPS geofoam. EPS manufacturing proc-esses are described followed by a review of engineering properties found in previous research work done so far. Standards and design manuals applicable to EPS are pre-sented. Selected EPS geofoam-engineering applications are discussed with examples.
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