Expanded Polystyrene Foam Density

Astm c578 standard specification for rigid cellular polystyrene thermal insulation addresses the physical properties and performance characteristics of eps foam as it relates to thermal insulation in construction applications.

Expanded polystyrene foam density.

Compressive and flexural strength values for expanded polystyrene are based on short term load conditions in accordance with typical astm test standards. This closed cell structure provides minimal water absorption and low vapor permanence. A versatile building material it works well for a variety of different applications such as road construction bridge abutments slope stabilization building foundations retaining walls stadium and theatre seating fill for. Eps is available in several compressive strengths to withstand load and back fill forces.

Tds expanded polystyrene doc page 2 of 4 what is expanded polystyrene eps eps is a closed cell lightweight cellular plastics material produced from polystyrene. It is usually white and made of pre expanded polystyrene beads. It is extremely lightweight but strong and durable. Polypropylene coated sheets have an added layer of moisture protection.

Expanded polystyrene insulation is a lightweight rigid closed cell insulation. The material has been modified by the addition of flame retardant additives. Contact us for details. The thermal conductivity of expanded polystyrene foam of density 20 kg m 3 is 0 035 0 037 w m k at 10 c.

Eps foam is the correct term for any form of expanded polystyrene. Expanded polystyrene eps is a rigid and tough closed cell foam with a normal density range of 11 to 32 kg m 3. Rigid polystyrene foam insulation sheets these sheets resist the absorption of water air and gas and are widely used in cold storage and packaging applications. This white foam can be seen in cups for hot beverages refrigerators insulation packaging etc the foam plastic consists of 96 98 air and 2 4 polystyrene.

Expanded polystyrene or eps geofoam is a cost efficient insulation material used in the construction industry. Foam types polystyrene foam standard sizes 96 x48 and 48 x24 thicknesses 1 to 32 in one inch increments can be cut to any thickness up to 32 thick. Eps is used for food containers molded sheets for building insulation and packing material either as solid blocks formed to accommodate the item being protected or as loose fill peanuts cushioning fragile items. As do most load bearing building materials eps foam insulation products creep under long term continuous load conditions and in critical applications this characteristic must be considered in design calculations.

Eps foam is perhaps the most common in everyday life.