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.

  • Corporate Authors:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Kaplar, C W
  • Publication Date: 1974-4

Media Info

  • Pagination: 30 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00263150
  • Record Type: Publication
  • Report/Paper Numbers: TR 249 Tech. Rpt.
  • Files: TRIS, USDOT
  • Created Date: Nov 12 1974 12:00AM