Flexural Behavior of Epoxy under Accelerated Hygrothermal Conditions

Fibers

Abulgasem Mohamed Elarbi¹  Hwai-Chung Wu¹ 

[1] Department of Civil and Environmental Engineering, Wayne State University, Detroit, MI 48202, USA;

关键词: fiber reinforced polymer (FRP);    resin;    hygrothermal effect;    accelerated test;    strength deterioration;   

DOI  :  10.3390/fib5030025

来源: DOAJ

【 摘 要 】

Fibers by themselves have a limited use in engineering applications since they cannot transmit loads from one to another; therefore, the matrix material plays an important role in the overall function of the fiber reinforced polymer (FRP) composites. This paper intends to study the long term strength of epoxy resins subject to accelerated hygrothermal conditions. Such tests are able to predict the weather durability performance of epoxy materials, which is particularly important for many FRP bonded concrete structures. Several sets of epoxy beam specimens have been constructed and exposed to various hygrothermal environments (25 °C, 100 °C, 180 °C and 0% or 100% relative humidity). Specimens were then evaluated at selected thermal cycles by three-point flexural tests. The flexural strength, mid-span deflection, and stiffness, as well as the mode of failure, have been examined in this study.

【 授权许可】

Unknown