Moisture Absorption Characteristics of Epoxy Based Adhesive Reinforced with CTBN and Ceramic Particles for Bonded-in Timber Connection: Fickian or Non-Fickian Behaviour

摘要: For in-situ bonding of pultruded rod into timber structural members, such as in the construction bonded-in connection, strengthening and repair structures, adhesive used must be thixotropic, room temperature cure, environmentally stable friendly applied at without pressure. This study investigates moisture absorption characteristics three adhesives specially formulated for connections where are reinforced with nano- micro-particles denoted CB10TSS (standard adhesive), Albipox (CB10TSS/CTBN) Timberset (ceramics filled adhesive) aim to improve mechanical properties raise glass transition temperature. The effect high temperatures humidity on were determined following conditioning different (20°C, 30°C 50°C) relative humidities (65%, 75% 95%) soaking water 20°C In all cases least affected by environment but exhibited lowest uptake. Exposure humid environments 50°C resulted uptake characterized Fickian which had only a modest properties. However, exposure (50°C) is higher than Tg non-Fickian more adverse