An assessment of the properties and degradation behaviour of glass-fibre-reinforced polyester polymer concrete

A study has been conducted to investigate the mechanical properties of glass-fibre-reinforced polyester polymer concrete. While this material is becoming popular in South Africa for use in the manufacture of manhole and drainage components, little is known about its long term durability. In this study, the modulus of rupture and the fracture toughness of polyester polymer concrete were determined by using three-point flexural testing methods. The strengthening effects of glass-fibre reinforcement, woven roving and silane coupling agent additions were then established. In addition, the effect of exposure to various aggressive environments was investigated. It was found that fibre reinforcement of polymer concrete significantly improves the strength and toughness of the material. Marked deterioration in strength occurs during exposure to UV radiation, acids, alkalis, water and saline solution.