MOISTURE AND FREEZE-THAW EFFECTS ON RIGID THERMAL INSULATIONS
This report presents data from a limited investigation of some physical properties of predominantly rigid foamed plastic thermal insulation boards of mineral wool, cork, perlite, calcium silicate, urethane, extruded polystyrene and polystyrene beadboard. None of the insulating boards were completely moisture resistant. Many foamed plastics were relatively resistant to excessive water absorption. Fused polystyrene beadboards were more absorbent than extruded polystyrene. The two extruded polyurethanes in these tests were generally more absorbent than the polystyrenes. Special surface densification treatment on some of the extruded polystyrene boards appeard effective in reducing moisture absorption.
Washington, DC USA 20590
- Kaplar, C W
- Publication Date: 1974-4
- Pagination: 30 p.
- TRT Terms: Fibers; Freeze thaw tests; Heat insulating materials; Minerals; Moisture content; Physical properties; Polystyrene; Polyurethane resins; Surface treating; Urethane
- Uncontrolled Terms: Cork
- Old TRIS Terms: Mineral wool
- Subject Areas: Geotechnology; Highways; Materials;
- Accession Number: 00263150
- Record Type: Publication
- Report/Paper Numbers: TR 249 Tech. Rpt.
- Files: TRIS, USDOT
- Created Date: Nov 12 1974 12:00AM