Navigating the Challenge: Sustainability in Concrete Structures through Synergy of Material...

Speaker: Dr. Ir. Agnieszka Bigaj-van Vlijet

Title: Navigating the Challenge: Sustainability in Concrete Structures through Synergy of Material and Structural Engineering

Sustainability has become a paramount concern for construction industry and for concrete structures in particular, where the advancements in material science and structural engineering create new opportunities for sustainable solutions. However, pursuing innovation often puts structural engineers in a difficult position, forcing them to make decisions for which current standards do not provide clear guidance. This introduces dilemmas that requires careful consideration and a forward-thinking approach.

The synergy between material and structural engineering emerges as the catalyst for advancing less resource- and carbon-intensive practices. Material scientists continuously strive to develop environmentally friendly alternatives to traditional concrete, exploring novel binders, recycled aggregates, supplementary cementitious materials and construction technologies. Structural engineers explore and capitalize on the distinctive characteristics offered by such novel materials and construction methods. In order to effectively tackle sustainability challenge, structural engineers must work towards optimizing designs for ensuring structural safety, serviceability and durability of structures, while balancing the often-conflicting objectives of minimizing the environmental impact and the economic burdens throughout the entire life cycle of structures.

Recognizing that innovation might inherently involve unknown risk, engineers must navigate the risk-innovation nexus by incorporating risk assessment and mitigation measures into structural solutions. This necessitates integration of the rigorous evaluations of performance requirements with thorough consideration of uncertainties associated with material and structural behaviour. In doing so, not only the immediate but also the enduring performance and environmental impact of structures shall be carefully considered and managed. In this context, systematic testing and monitoring of long-term structural behaviour and durability should be included as an integral part of risk management for structural applications of innovative solutions.

Upscaling and mainstreaming the innovation for sustainable concrete structures mandates a collaborative effort of material scientists, structural engineers, and regulatory bodies, which is essential to integrate the latest advancements in standards, guidelines, and recommendations. This collaborative endeavour naturally extends beyond knowledge development, shifting the focus to developing practical tools such as testing protocols, performance-based design procedures, and bespoke risk management methodologies tailored to the specific challenges posed by emerging innovative solutions.

ABOUT RILEM:

The mission of RILEM is to advance scientific knowledge related to construction materials, systems and structures and to encourage transfer and application of this knowledge world-wide.

This mission is achieved through collaboration of leading experts in construction practice and science including academics, researchers, testing laboratories and authorities.