CORE Group members Inês Rosa and João Firmo attended the fib Symposium 2023 “Building for the future: Durable, Sustainable, Resilient”, which took place in Istanbul, on 5-7 June, and presented recent works on the elevated temperature and fire behaviour of GFRP-reinforced concrete structures and on the development of bio-based resins for the pultrusion of CFRP reinforcement strips. Fib international symposium series is among the official symposium of “The International Federation for Structural Concrete (fib)” and covers topics related to concrete and innovative materials, structural performance and design, construction methods and management, and outstanding structures.