“An update on the revisions of Eurocode 1992-1-2”

Jenny Burridge, The Concrete Centre, UK.

Jenny Burridge (MA CEng MICE MIStructE) is a chartered civil and structural engineer with more than 30 years’ experience in the construction industry. She has worked for Arup and AECOM designing award winning buildings in both the UK and mainland Europe. As Head of Structural Engineering she leads a team of engineers advising clients, engineers and architects on the most efficient and effective uses of concrete.  She is the UK representative on the CEN task group looking at revisions to the fire part of Eurocode 2 and chairs the BSI Advisory Committee for Engineering Design and Construction.  She contributed to the Concrete Centre publication “Performance of Concrete Structures in Fire” and has been the UK member of the European Concrete Platform task-group on Fire and Eurocode 2 since 2010.

“Experimental investigations into the spalling of high strength concrete and the fire performance of tunnel linings”

Tom Lennon, BRE Group, UK.

Tom Lennon has worked at BRE for over 35 years. He was responsible for the programme of full-scale fire tests carried out at BRE’s large-scale test facility at Cardington on steel, concrete and timber framed buildings. Mr Lennon has extensive experience of the Structural Eurocodes. He is a prominent member of British Standards committee B525/-/32 the mirror group for the fire part of EC1 responsible for the implementation of the code in the UK. Mr Lennon was a member of the project team responsible for developing the National Annex for use with EN 1991-1-2. He is author of a number of papers, design guides and journal articles on the subject of structural fire engineering design. Mr Lennon is co-author of the Thomas Telford handbook on the fire design parts of EC1, EC2, EC3 and EC4 and is the author of a book on Structural Fire Engineering.

“An overview of the RILEM State-Of-The-Art Report on the modelling of concrete behaviour at high temperature.”

Dr Alain Millard, CEA, France.

Dr Alain Millard graduated for the French civil engineering school ‘Ecole Nationale des Ponts et Chaussées’. He joined the French Atomic Energy Authorities in 1978 in the Department of Thermal and Mechanical studies. There, Dr Millard specialized in the Thermo-Hydro-Mechanical behavior of geomaterials (concrete, soils, rocks). He actively participates to the development of the in-house FE code Cast3M. The Cast3m software is a multi-physics finite element code, which can be used, among many other things, to predict the evolution of the temperature, water and gas pressures and displacements and stress distributions in a structure subjected to high temperatures, and thus to construct various criteria in order to predict the possible development of spalling.

“Fire spalling theories – Realistic and more exotic ones.”

Dr Robert Jansson McNamee, BRANDSKYDDSLAGET, Sweden.

Dr Robert Jansson McNamee is the research manager of the Swedish consultancy company Brandskyddslaget. He has been active in different RILEM committees on concrete behaviour at high temperatures as secretary/co-chairman since 2006. Further on, he is the president of the Swedish chapter of SFPE and the Swedish representative in CEN/TC250/SC02/WG01/TG5 working with the revision of the Eurocode on concrete and fire EN 1992-1-2.

“An update on the activities of the RILEM Technical Committee 256-SPF: Spalling of concrete due to fire: testing and modelling.”

Dr Pierre Pimienta, CSTB, France.

Dr Pierre Pimienta belongs to the Scientific and Technical Center for Buildings (CSTB) in France. He is the Vice Head of the Division of the Safety Structures and Fire Department. He is involved in research, expertise and tests on concrete exposed to high temperatures and fire for more than two decades. He is the chairman of the RILEM Technical Committee SPF working on these topics. He co-organized the 3^rd International Workshop on Concrete Spalling due to Fire in Paris in 2013. Previously, he did a thesis on mechanical properties of polar ice has made two postdocs in Hokkaido University, Japan and NIST, USA.

• Influence of chemical, physical and mechanical processes on spalling of concrete
• Thermal behaviour and thermal stability of concrete ingredients at high temperatures
• Influence of heating on concrete properties
• Pore pressure development
• Transport mechanisms in heated concrete
• Stress-strain behaviour and fracture mechanics of heated concrete
• Spalling mechanisms
• Model selection and multiscale modelling

• Testing requirements and interpretation
• Constitutive material laws
• Structural design models taking into account spalling
• Influence of spalling on fire resistance and residual capacity
• Occurrence of spalling in natural fires
• Damage assessment and repair of heated concrete
• Measures to reduce or prevent spalling
• Case studies
• Pre-normative research and standardization