Jointly Organised By:
Singapore Concrete Institute
WAK Technologies Pte Ltd / MC Bauchemie
About the Speaker / Seminar:
Professor Ravindra K Dhir OBE
Director, Applying Concrete Knowledge Ltd
Emeritus Professor of Concrete Technology, University of Dundee
Concrete has served the mankind well, as the world’s premier construction material, over the last 150 years. Nonetheless, it is arguable whether concrete has kept pace with time. For example, until the beginning of this century, there has not been a significant movement towards the adoption, in standards, of composite cements (blended cements) and recycled and secondary aggregates (including construction demolition) in specifying structural concrete. Likewise, although the method of specifying concrete has now changed, with specific durability mechanisms assigned to exposure classes, the specifications, by and large, still revolve around the citadels of limiting factors namely, minimum compressive strength, water/cement ratio and minimum cement content, which have been the stronghold of concrete performance.
In delivering this lecture, and drawing from his life-time research, Professor Dhir takes the view that the citadels of concrete specification inhibit innovation and are in danger of hindering the progress of concrete as the world’s premier construction material. He will argue a case for breaking out of this straitjacket and instead adopting a responsible shift towards performance-based philosophy to concrete construction. This will allow much needed flexibility in concrete design and enable concrete to respond to the demands of changing world, i.e. (i) climate change, (ii) carbon footprint, (iii) economic pressure, (iv) client pressure, (v) building insurance and (vi) high performance concrete. However, to seize this opportunity and to ensure that concrete emerges as the sustainable solution and continues to serve the construction world over will require a well focused, coordinated and visionary approach, across all communities.