Creep Studies of Polyester Polymer Concrete Under Flexural Loading

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Title: Creep Studies of Polyester Polymer Concrete Under Flexural Loading

Author(s): N. Dharmarajan and C. D. Armeniades

Publication: Special Publication

Volume: 99

Issue:

Appears on pages(s): 17-30

Keywords: creep properties; flexural strength; polyester resins; strains; polymer concrete; stresses; temperature; Materials Research

Date: 5/1/1987

Abstract:
The creep of unsaturated polyester/styrene polymer concrete (PC) under flexural loads was investigated using two PC systems with different resin contents, as well as the unfilled resin. Measurements were taken at temperatures, ranging from -5 to 60 C, time periods up to 160 hours, and stress levels from 4 to 12 MN/m², which represent stress-to-strength ratios of 0.3 to 0.7. The data obtained over these ranges of temperature, stress, and resin content were successfully superposed on a single master curve of creep compliance versus time. On the basis of these results, the authors propose a single expression that describes the creep compliance of the PC system as a product of separable functions of temperature, stress, resin content, and time