Confirmation of Candidature - Degradation Mechanisms of Structural Polymer Composites Under Extreme Weather : Zaneta Senselova

Fibre-reinforced-polymer (FRP) composites have the potential for exponential growth in modern construction as a new cost-effective alternative to conventional materials like timber, steel and concrete. However, limited knowledge of their long-term performance against extreme weather conditions is a major obstacle to broader acceptance and mass implementation of FRP composites in civil infrastructure and construction. This project aims to systematically assess the long-term performance of FRP composites with due consideration of different types of fibres and resin systems under the synergistic effects of extreme weather conditions. It will focus on understanding the degradation and stability of FRP composites manufactured from either carbon or glass fibres and using different resin systems such as vinyl-ester, epoxy, and bio-epoxy under exposure to elevated in-service temperatures, high humidity, salinity, solar UV radiation exposure and a combination of them. The macro-mechanical behaviour of the control and conditioned FRP composites will be characterised using tensile and short-beam shear, and their microstructure will be analysed to assess degradation mechanisms. Based on micro-structural modelling, a new and reliable analytical model for FRP composites, providing for changing degradation mechanisms over their lifespan due to different environmental factors or a combination of extreme weathering and ageing, will be developed to fulfil the scientific gap on FRP in construction.

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