David will be discussing the properties of modern concretes and show why particle packing and rheology of concrete in the plastic state can influence long term structural behaviour in concrete assets.
The presentation will also include numerous examples of non-structural cracks in concrete and explain why they occur. It will outline the key issues the industry faces and how past mistakes can be avoided in the future.
David will present the case for pre-contract choice of aggregates, cement binders, curing methods, formwork striking times, early temperature control and good concreting practices.
The presentation will conclude by looking at the advantages of using significantly less Ordinary Portland Cement and less reinforcing steel whilst still achieving high durability and maintenance-
David Ball is the former President of the Concrete Society, Chairman of David Ball Group plc, former Chairman of the Concrete Bridge Development Group and a Fellow of the RSA. David was a member of the recent Technical Committee updating BS 8102:2009 “Protecting below ground structures” aswell as a Technical Committee member of the Conference Advisory Group for the Bahrain Society of Engineers.
He has spent over 35 years in designing and manufacturing materials for the construction industry. David is a past President of the Association of British Chambers of Commerce and a member of the Local Strategic Partnership Board of South Cambridgeshire District Council