Accession Number : AD0778442

Title :   Properties of Composite Materials for Use in Expedient Paving Systems.

Descriptive Note : Final rept. Jul 71-Apr 72,

Corporate Author : TEXAS A AND M UNIV COLLEGE STATION SOILS DIV

Personal Author(s) : Irwin,Lynne H. ; Dunlap,Wayne A.

Report Date : APR 1974

Pagination or Media Count : 57

Abstract : Uniaxial flexure and tension tests and biaxial flexure tests are performed on two systems of fiberglass reinforced polyester (FRP) and on a FRP-polyurethane foam composite to evaluate their suitability for possible use as paving materials. Principal parameters studied are ultimate strength, fatigue performance, and modulus of elasticity. Uniaxial test results compare favorably with those from biaxial tests. A METHOD FOR STRESS ANALYSIS FOR THE BIAXIAL TESTS IS DEVELOPED TO ACCOMMODATE A CENTER LOADED, CLAMPED, CIRCULAR PLATE SUBJECTED TO LARGE DEFLECTIONS AND HAVING RADIAL FORCES ON THE BOUNDARY. Results show that factors affecting the volume proportions of resin, glass, and iar, and factors affecting the properties of the resin could have a significant influence on the properties of the FRP. Both utlimate strength test results and fatigue test results indicate that FRP/ Fiberglass is superior. (Author, modified-PL)

Descriptors :   *Pavements, *Glass reinforced plastics, *Composite materials, Fiberglass, Polyester plastics, Polyurethane resins, Foam, Fatigue(Mechanics), Flexural properties, Tensile properties

Subject Categories : Laminates and Composite Materials
      Civil Engineering
      Construction Equipment, Materials & Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE