DISC 2018: Developments in Structural Concrete: Better - Smarter - Stronger

Presentation synopses

Ioanna-Papanikolaou.jpeg Graphene-reinforced materials for self-sensing applications
Ioanna Papanikolaou MEng MRes GMICE, Costain / University of Cambridge

This research investigates the potential use of nanotechnology and in particular graphene materials for self-sensing applications. Graphene is reported to enhance the mechanical and durability properties and instigate a self-sensing mechanism of the cement matrix. The presenter will also cover current developments in the self-healing concrete area and the Resilient Materials for Life (RM4L) programme.

Ioanna holds a MEng degree in Civil Engineering from the University of Surrey and a MRes degree in Future Infrastructure and the Built Environment from the University of Cambridge. She has worked as a civil engineer in the UK with Costain Group at the £1 bn London Power Tunnels project and more recently as Innovations Manager and Smart Infrastructure Advisor on the £4 bn Thames Tideway Tunnel, the largest tunnelling project currently taking place in the UK. Costain has funded Ioanna to pursue a PhD in advanced materials and nanotechnology for tunnelling applications at the University of Cambridge, where she is supervised by Professor Abir Al-Tabbaa and she is part of the Geotechnics research group in the civil engineering department.
Andri-Setiawan.jpg Punching shear of slab-column connections under seismic loading
Andri Setiawan BSc, MSc, Imperial College London

Despite poor performance of slab-column connections under seismic loading, flat slabs without shear reinforcement have been widely used in regions with high seismicity including southern Europe and West Coast of the United States. The condition is worsened by the fact that current seismic provisions for punching are still largely empirical and based on laboratory tests of thin slabs not representative of practice. The study presented here utilises nonlinear finite element analysis (NLFEA) to investigate various parameters which influence the seismic behaviour of slab-column connections. In addition, an analytical procedure based on the Critical Shear Crack Theory is proposed. The procedure is shown to be not only more accurate than empirically-based models but also sufficiently practical for design purposes.

Andri Setiawan is a 3rd year PhD student in the Structures Section of the Department of Civil & Environmental Engineering, Imperial College London. He is currently working on punching shear in flat slab buildings situated in seismic regions under the supervision of Dr. Robert Vollum and Dr. Lorenzo Macorini. Before starting his PhD, Andri was involved in some interesting construction projects in his home country, Indonesia. These included implementation of a base isolation technique in a commercial building, optimisation of skyscraper design using seismic performance-based methodology, and the design of a fully precast RC container terminal in an earthquake-prone area. Andri holds both bachelor and master degree with distinction from Institut Teknologi Bandung, Indonesia.
John-Bennetts.jpg Uncertainties in bridge inspection data and the need for change
John Bennetts MA, MSc, GMICE, WSP
The condition information we collect on our bridge structures is increasingly used to inform decision making. However, this data is known to be variable as it relies on the subjective assessment of inspectors during visual inspections. This large study on behalf of Highways England independently inspected 200 bridges on the UK strategic road network to understand the nature of the variation in inspection data between inspectors, and the implications for the ways in which we use these data.

John is a Senior Bridge Engineer at WSP, he graduated from Cambridge in 2010 and has since undertaken a diverse range of projects including research, bridge design and assessment using a wide variety of analysis techniques and materials. He has played an important role in providing specialist advice to Highways England related to the performance of their bridge stock and the prioritisation of through life maintenance and inspection, applying cutting-edge data science and machine learning techniques to deliver new insights.
Pieter-Desnerck.jpg Reinforced concrete half-joint bridges: dealing with deterioration and shortcomings
Pieter Desnerck PhD, Brunel University London

A half joint is a particular type of RC structure. Within the existing UK Highways England network alone there are 400+ concrete bridges with half joints. The advantages of this structural form include a level running surface along the bridge deck and the support spans, and precast beams can be easily lifted into place and supported during construction. However, a disadvantage inherent in this type of construction is that there are problems associated with leakage through the joint, increasing the propensity for the deterioration of the concrete and reinforcement steel. Half joint details have come under intense scrutiny since the collapse of a section of the de la Concorde Overpass in Quebec, Canada in 2006. Thus, a key challenge is to understand the lessons to be learned from the Concorde Overpass Collapse, and the inherent vulnerabilities in half joint structures.This presentation will discuss the findings of an experimental study into more accurate assessments of half-joint structures, and will discuss the management strategy for half-joint structures throughout the UK.

Dr Pieter Desnerck is a Lecturer (Assistant Professor) in Civil Engineering in the Department of Civil and Environmental Engineering at Brunel University London. He obtained his PhD studying the mechanical behaviour of self-compacting concrete from Ghent University (Belgium) in 2011. He has worked as a post-doctoral researcher at the Universite de Sherbrooke (Canada), Missouri University of Science and Technology (USA) and as a senior research associate / affiliated lecturer at the University of Cambridge (UK). His principal research interests lie in the area of structural behaviour of building materials with an emphasis on flowable concretes  and assessment and the deterioration of reinforced concrete structures.
Concrete shells – towards efficient structures: construction of an ellipsoidal concrete shell in Switzerland
Aurelio Muttoni Prof. Dr. sc. techn. ETH, Muttoni and Fernández Consulting Engineers, Ecublens, Switzerland
The presentation will describe the design and construction of a shell in the form of an ellipsoid (93 × 52 × 22 m) with thickness varying between 100 and 120 mm, awarded with the fib Award for Outstanding Concrete Structures in 2014. The shell was built using sprayed concrete combined with ordinary concrete in some regions. A number of tailored solutions were also adopted such as post-tensioning, addition of fibres and shear studs, to ensure satisfactory performance both at the serviceability and ultimate limit states.

Aurelio Muttoni is Full Professor and Head of the Structural Concrete Laboratory at Ecole Polytechnique Fédérale de Lausanne (Switzerland). He is also partner of Muttoni and Fernández Consulting Engineers. Between 2015 and 2018, he was the leader of Project Team PT1 in charge of the revision of EN 1992.
Aurelio-Muttoni.jpg Updated shear provisions for the next generation of EN 1992
Aurelio Muttoni Prof. Dr. sc. techn. ETH, Ecole Polytechnique Fédérale de Lausanne, Switzerland

The update of shear provisions for the next generation of EN 1992 is aimed at enhancing ease of use for common tasks of design. In addition, it also has the ambition to provide structural engineers with a tool to perform more complex tasks, as the assessment of critical concrete structures. To achieve these purposes, the provisions are based on a mechanical model which allows accounting in a consistent manner for the size effect and for the influence of different concrete types.

Aurelio Muttoni is Full Professor and Head of the Structural Concrete Laboratory at Ecole Polytechnique Fédérale de Lausanne (Switzerland). He is also partner of Muttoni and Fernández Consulting Engineers. Between 2015 and 2018, he was the leader of Project Team PT1 in charge of the revision of EN 1992.
Cam-Middleton.jpg In quest of the holy grails of construction
Cam Middleton BE(Hons), MSc, DIC, PhD, CEng, FICE, FIE(Aust), Laing O’Rourke Professor of Construction Engineering & Fellow of King’s College, Cambridge

This aim of this presentation is to hold a high level dialogue with the conference participants in which I wish to explore ideas for what might be the  construction industries equivalent of the “moonshot” or “a cure for cancer”. I plan to suggest that a focus on a few big breakthroughs might help drive forward innovation in the industry.

Campbell Middleton is the Director of the Laing O’Rourke Centre for Construction Engineering & Technology in the Department of Engineering at Cambridge University. Prior to Cambridge, he worked for 8 years in professional practice in infrastructure design and construction in Australia and with Arup in London. He is Chairman of the UK Bridge Owners Forum, a member of the Design Panel for High Speed 2, and has acted as an advisor or consultant to a number of organisations including Infrastructure UK, the Highways Agency (now Highways England), Ministry of Transportation, Ontario and the National Transport Commission in Australia. He has received a number of academic awards including the Henry Adams Award of the Institution of Structural Engineers in 1999 & 2014, and the Telford Premium Award (1999) and Telford Gold Medal (2010) from the Institution of Civil Engineers. He is a Fellow of the Institution of Civil Engineers, the Institution of Engineers, Australia and the Transport Research Foundation. His research interests include advanced plastic analysis, risk & asset management, non-destructive testing, off-site manufacturing, modular and additive manufacturing, applications of computer vision & smart sensor applications for structural health monitoring. He is a member of the executive team responsible for overseeing the EPSRC/Innovate UK funded Centre for Smart Infrastructure and Construction and co-author of a recent book titled Bridge Monitoring – A Practical Guide.

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