Accession Number : AD0752454

Title :   Creep Characteristics of Polyester Concretes.

Descriptive Note : Technical rept.,

Corporate Author : ARMY CONSTRUCTION ENGINEERING RESEARCH LAB CHAMPAIGN ILL

Personal Author(s) : Howdyshell,P. A.

Report Date : NOV 1972

Pagination or Media Count : 20

Abstract : The purpose of this project was to determine the nature, magnitude, and factors influencing the creep of particle-filled polyesters, and to what extent creep affects the usefulness of the material in concrete- type applications. Tests were conducted on an aggregate-and a cement particle-filled polyester to determine compressive creep characteristics. The evaluation consisted of using laboratory test techniques that directly relate to the evaluation of creep in portland cement concrete. Results indicated that particle-filled polyesters are visco-elastic in nature and creep when subjected to sustained loads. While the creep strains of the filled polyesters were similar in nature and magnitude to what could be expected from equivalently-loaded portland cement concrete, the creep characteristics of the polyesters appeared to be very sensitive to small temperature variations. Also, the polyesters exhibited creep failure tendencies at lower stress-to- strength ratios than would be expected from portland cement concretes. (Author-PL)

Descriptors :   (*CONCRETE, *POLYESTER PLASTICS), (*COMPOSITE MATERIALS, POLYESTER PLASTICS), REINFORCED PLASTICS, QUARTZ, CEMENTS, CREEP, CONSTRUCTION MATERIALS

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE