Concrete Repair, Rehabilitation and Retrofitting

This proceedings volume consists of papers focusing on repairing, maintaining, rehabilitating, and retrofitting of existing infrastructures to extend their life and maximize economic return. Moreover, structural performance and material durability are discussed. Contributions fall under the following headings: (i) Concrete durability aspects, (ii) Condition assessment of concrete structures, (iii) Modern materials technology, (iv) Concrete repair, rehabilitation and retrofitting, (v) Performance and health monitoring, and (vi) Education, research and specifications. Major attention is paid to innovative materials for durable concrete construction, integrated service life modelling of reinforced concrete structures, NDE/NDT and measurement techniques, repair methods and materials, and structural strengthening and retrofitting techniques. For researchers and practitioners in structure and infrastructure engineering. Set of book of abstracts (546 pp) and a searchable full paper CD-ROM (1564 pp).Preface ICCRRR Committees Keynote papers Assessing the remaining service life of existing concrete bridges J.C. Walraven The transformation of the existing building stock: A precondition for a sustainable future P. Richner The concrete repair industry, actions for improvements P.H. Emmons Where does rehabilitation fit into the South African dam safety picture? C. Oosthuizen A life in non-destructive testing! M.G. Grantham Non-destructive testing and continuous monitoring: Modern tools for performance assessment and life time prognosis of structures C.U. Grosse Operational Modal Analysis for testing and continuous monitoring of bridges and special structures A. Cunha, E. Caetano & F. Magalhaes From the instantaneous corrosion rate to a representative value C. Andrade, N. Rebolledo & F. Pedrosa Novel cement-based composites for strengthening and repair of concrete structures V. Mechtcherine Rehabilitation and strengthening of concrete structures using Ultra-High Performance Fibre Reinforced Concrete E. Bruhwiler Textile-based composites versus FRP as strengthening and seismic retrofitting materials for concrete and masonry structures T.C. Triantafillou Theme 1: Concrete durability aspects Innovative materials and influences of material composition Curing technologies, strength and durability performance R. Wasserman & A. Bentur The effect of binder type on chloride threshold values for reinforced concrete M.C. Alonso, M. Sanchez, U. Angst & J.L. Garcia-Calvo Durability properties of high performance metakaolin concrete in different curing conditions M. Skazlic, A. Baricevic & M. Peric Quantification of anhydrous GGBFS particles in cement pastes subjected to organic acids: Comparison of selective dissolution and image analysis methods J. Duchesne & O. Oueslati Performance evaluation of limestone mortars for elevated temperature application in nuclear industry K.M. Haneefa, M. Santhanam & F.C. Parida Optimization of fly ash based geo-polymer concrete A. Arjun & J. Michel Laye Durability studies on glass fiber reinforced High Performance Concrete with fly ash as admixture H. Sudarsana Rao & V.G. Ghorpade Strength and sulphate resistance of rice husk ash concrete D.B. Raijiwala & I.U. Kundan Improvement of repairing mortars in cold environments using coal bottom ash C. Argiz, E. Menendez & M.A. Sanjuan TiO2 TRC-New features of TRC by titanium dioxide modifications W. Brameshuber & C. Neunzig The use of superabsorbent polymers as a crack sealing and crack healing mechanism in cementitious materials D. Snoeck, K. Van Tittelboom, N. De Belie, S. Steuperaert & P. Dubruel Effect of matrix permeability on durability of structural grade geopolymer and conventional concretes K. Sagoe-Crentsil, S.Yan & T. Brown Polymers in concrete repairing according to EN 1504 L. Czarnecki & P. Lukowski Durability properties of inorganic polymer concrete using fly ash and slag J.R. Mackechnie & A.C.N. Scott Aminobenzoate modified hydrotalcites as a novel smart additive of reinforced concrete for anticorrosion applications Z. Yang, H. Fischer & R.B. Polder Mix design, mechanical properties and impact resistance of UHPFRCCs D. Nicolaides, A. Kanellopoulos, M. Petrou & M. Soutsos Durability of lightweight self-consolidating concrete in massive structures M. Kaszynska Influence of different recycled aggregate types on strength and abrasion resistance properties of concrete S.O. Ekolu, L.N. Makama & W.P. Shuluuka Innovative low cost fibre-reinforced concrete-Part I: Mechanical and durability properties D. Bjegovic, A. Baricevic & S. Lakusic Innovative low cost fibre-reinforced concrete-Part II: Fracture toughness and impact strength J. Krolo, D. Damjanovic, I. Duvnjak, D. Bjegovic, S. Lakusic & A. Baricevic The effect of cement type on the performance of mortars modified by superabsorbent polymers A.J. Klemm & K. Sikora Effect of super-absorbent polymer on simplification of curing and prevention of micro-cracking of concrete at early age K. Ichimiya, H.-W. Reinhardt & A. Assmann The influence of the particle size of superabsorbent polymer on internal curing of high performance concrete H. Huang, N. Van Tuan & G. Ye Porous network concrete: Novel concept of healable concrete structures S. Sangadji, E. Schlangen & A. Milenkovic An experimental methodology to assess the self-healing capacity of cementitious composites with "aero-crystallizing" additives L. Ferrara, V. Krelani, I. Pessina, P. Bamonte & E.G. Brac Study of the effectiveness of different types of surface protection materials applied in concrete structures K.S. Almeida, M.Q. Oliveira, V. Pereira & E.B. Monteiro Influence of cement content and environmental humidity on cement-asphalt composites performance A. Garcia, P. Lura & M.N. Partl Engineered Cementitious Composite as a cover concrete against chloride ingress Y. Lin, L. Wotherspoon, J.M. Ingham, A. Scott & D. Lawley Fire resistance performance of concretes exposed to high temperatures D. Pasla Fire-protection coating of reinforced concrete lining in Lefortovsky tunnel V.R. Falikman & A.A. Shilin Influence of hydrophobicity and oleophobicity on cleaning graffiti on concrete panels and natural stones K. Malaga & U. Mueller Service life modelling and prediction of durability Developing a modified rapid chloride permeability test for mortar concrete A.A. Ramezanianpour, A.R. Pilvar, M. Mahdikhani, F. Moodi & R. Pilvar Measuring permeability of cementitious materials Q.T. Phung, G. De Schutter, N. Maes, D. Jacques & G. Ye The pore structure and water permeability of cement paste blended with fly ash over a long period up to one year Z. Yu & G. Ye Measurement of the air permeability of concrete "in situ": Status quo R. Torrent & L. Ebensperger Evaluation of carbonation progress of existing concrete structure based on air permeability of concrete cover-a case study in Japan K. Imamoto & A. Tanaka Lattice Boltzmann simulation of permeability of cement-based materials M. Zhang & G. Ye Morphological nature of diffusion in cement paste N. Ukrainczyk, E.A.B. Koenders & K. van Breugel Modeling of moisture distribution in concrete in 3D J. Skramlik, M. Novotny & K. Suhajda DC and AC measurements of the chloride diffusion coefficient through concrete H. Mercado, S. Lorente & X. Bourbon Factors affecting AgNO3 colorimetric method for measurement of chloride migration in cement-based materials C. Shi, X. Wang, X. An, Q. Li, F. He & C. Chen Cement mortars with fly ash and slag-study of their microstructure and resistance to salt ingress in different environmental conditions M.A. Climent, J.M. Ortega & I. Sanchez Capillary suction and chloride migration in fire exposed concrete with PP-fibre J. Albrektsson & R. Jansson Effect of chlorides on moisture content and sorption isotherms M. Leivo, H. Kuosa, E. Holt, E. Vesikari & R.M. Ferreira Accelerated evaluation of corrosion inhibition by means of the integral corrosion test C. Andrade & N. Rebolledo Ageing process of cementitious materials: Ion transport and diffusion coefficient A. Babaahmadi, L. Tang & Z. Abbas The interaction of deterioration caused by chloride ingress and carbonation in mortars exposed to cyclic wetting and drying J. Backus, D. McPolin & B. Kuen Influence of carbonation on the chloride concentration in the pore solution of concrete X. Wan, T. Zhao & F.H. Wittmann Modified Wedge Splitting Test (MWST)-a simple tool for durability investigations of reinforcement corrosion in cracked concrete B. Savija, E. Schlangen, J. Pacheco & R.B. Polder Effect of concrete and binder composition on cracking sensitivity K. Kovler, S. Zhutovsky & A. Bentur Towards incorporating the influence of cracks in the durability index testing approach J. Kanjee, H. Beushausen, M.G. Alexander & M. Otieno A model for the prediction of plastic shrinkage cracking in concrete W.P. Boshoff, R. Combrinck & J. Maritz Durability design of reinforced concrete structures submitted to carbonation by using an probabilistic modelling M. Thiery, V. Baroghel-Bouny & A. Orcesi Mix design optimisation-the influence of binder content on mechanical and durability properties of concrete M. Angelucci, H. Beushausen & M.G. Alexander Durability and service life of reinforced concrete structures under combined mechanical and environmental actions T. Zhao, J. Jiang, X. Wan & F.H. Wittmann Control of concrete cover depth of reinforced concrete structures for durability G. Nganga, M.G. Alexander & H. Beushausen Essential parameters for strength-based service life modeling of reinforced concrete structures-a review J.O. Ikotun & S.E. Ekolu A Virtual Lab for multi-scale modeling of cementitious materials 1 E.A.B. Koenders, E. Dado & D.B.F. Carvalho Model verification, refinement and testing on independent 10-year carbonation field data S.O. Ekolu Treatment of a stochastic service life prediction model to an evaluation of a distressed two-story RC building S.O. Ekolu & M. Allan Methodology for including the age effect of concrete with SCMs in results from accelerated testing E. Gruyaert & N. De Belie Lattice model implementation on alkali silica reaction gel expansion in a reacted concrete medium C. Anac, E. Schlangen & O. Copuroglu A concrete performance assessment tool for structures with alkali silica reaction C. Anac, O. Copuroglu & E. Schlangen Relation between mass flow in cement-based composite materials and durability, investigated by means of neutron imaging F.H. Wittmann, P. Zhang & T. Zhao Modelling and prevention of reinforcement corrosion Assessment of some parameters of corrosion initiation prediction of reinforced concrete in Persian Gulf region A.A. Ramezanianpour, E. Jahangiri & F. Moodi Possibilities and restrictions for the use of stainless steel reinforcement U. Nuernberger Service life extension of concrete structures by increasing chloride threshold using stainless steel reinforcements H. Mahmoud, M.C. Alonso & M. Sanchez Working life of cathodic protection systems for concrete structures-analysis of field data R.B. Polder, G. Leegwater, D. Worm & W. Courage Assessment of critical chloride content in reinforced concrete by Energy Dispersive Spectrometry (EDS) revisited J. Pacheco, O. Copuroglu, B. Savija, E. Schlangen & R.B. Polder Testing of the chloride threshold values for reinforced concrete structures H.E. Sorensen, S.L. Poulsen & E.P. Nielsen Protection of steel in concrete using galvanic and hybrid electrochemical treatments G. Glass, C. Christodoulou & S. Holmes Mechanical behaviour of basalt fibre-reinforced plastics and their durability in an alkaline environment S. Muller, M. Butler & V. Mechtcherine Towards correlating natural and accelerated chloride-induced corrosion in cracked RC preliminary results M. Otieno, H. Beushausen & M.G. Alexander Improving concrete durability through the use of corrosion inhibitors I.N. Robertson Theme 2: Condition assessment of concrete structures Degradation assessment and service life aspects Conservation of concrete structures in fib Model Code 2010 S.L. Matthews, T. Ueda & A.B. Vliet Non-destructive Building diagnosis in the monitoring and inspection of existing building structures A. Walther & A. Hasenstab Concrete deterioration in mining structures A. Masarira & T.L. Bopape Case studies of concrete deterioration in reinforced concrete chimneys M. Santhanam An investigation into failures and problems of industrial floors on the ground-with an emphasis on case studies R.S. Walls & S.E. Ekolu Concrete damage in underground structures F. Mittermayr, D. Klammer, D. Hollen, M. Dietzel, C. Kurta, A. Leis & M.E. Bottcher Managing risk for concrete repair to multi-storey buildings P. Storey & J.A. Wium Condition assessment and repair strategy for seawater intake structure in Saudi Arabia M.K. Rahman, M. Ibrahim, S.M. Shaahid, M. Barry, M. Alkami & M.R. Taha Corrosion damage of concrete structures in ammonium nitrate-based environments I. Pepenar Condition assessment and repair of antenna towers concrete foundations I.B. Pecur, N. Stirmer & B. Milovanovic Repair and restoration of "Dalle de Verre" concrete windows M. Unal & H.-C. Kuhne Residual structural performance of a 26-year-old corroded reinforced concrete beam W.J. Zhu & R. Francois Experimental and numerical study on the residual strength of deteriorated prestressed concrete bridge beams affected by chloride attack Y. Tanaka, T. Shimomura & T. Yamaguchi Method to evaluate the residual strength in concrete elements exposed to fire using physic-chemical and microstructural parameters E. Menendez, L. Vega & C. Andrade Rehabilitation of a large arch dam: Importance of dam safety surveillance L. Hattingh & C. Oosthuizen Multiple arch dam: Challenges with the rehabilitation of one of the thin, unreinforced, double curvature arches of the Stompdrift Dam J.L. Schoeman & C. Oosthuizen Lombardi slenderness coefficient as one of the criteria for the preliminary evaluation of proposed rehabilitation works at Kouga dam C. Oosthuizen & C. Mahlabela Observations from the calibration of an arch dam model using ambient modal properties R. Makha & P. Moyo Modal parameter estimation from ambient vibration measurements of a dam using stochastic subspace identification methods P. Bukenya, P. Moyo & C. Oosthuizen Macroscopic ice lens growth: Observations on Swedish concrete dams M. Rosenqvist, K. Fridh & M. Hassanzadeh NDE/NDT and measurement techniques Strength monitoring of concrete structures by using non destructive testing C. Sashidhar, N.V. Ramana & D. Pavan Kumar Main challenges of non destructive evaluation of on-site concrete strength D. Breysse Test method to determine durability of concrete under combined environmental actions and mechanical load L. Wang,Y. Yao, Z. Wang, P. Huang & X. Guan Structure testing with ultrasonic-echo and impulse radar technique C. Sodeikat Influences on layer thickness measurements of concrete coatings by mobile NMR on steel-reinforced concrete constructions J. Orlowsky & M. Raupach Shape factors of four point resistivity method in presence of rebars A.J. Garzon, C. Andrade, N. Rebolledo, J. Fullea, J. Sanchez & E. Menendez Statistical analysis of electrical resistivity as a tool for estimating cement type of 12-year-old concrete specimens J. Pacheco, O. Morales-Napoles & R.B. Polder Measurement and visualisation of the actual concrete resistivity in consideration of conductive layers and reinforcement bars K. Reichling & M. Raupach Practical operation of data-logging covermeters and the interpretation of results J.F. Fletcher & C.I. Woolhouse Modern damage detection by using static assessment methods for efficient rehabilitation F. Scherbaum, J. Mahowald, D. Waldmann, S. Maas & A. Zurbes Strengthening of reinforced concrete slabs built around the year 1910 S. Gmainer & J. Kollegger Analysis of the strain transfer mechanism between a truly distributed optical fiber sensor and the surrounding medium J.M. Henault, J. Salin, G. Moreau, M. Quiertant, F. Taillade, K. Benzarti & S. Delepine-Lesoille Investigation of the crack opening and damage monitoring of textile reinforced cementitious composites using Digital Image Correlation E. Tsangouri & D. Van Hemelrijck A non-destructive test method for the performance of hydrophobic treatments U. Antons, J. Orlowsky & M. Raupach Examination of the hydration of cementitious binders with fly ash and blast furnace slag using in-situ XRD A. Vollpracht & W. Brameshuber Passive infrared thermography as a diagnostic tool in civil engineering structural material health monitoring M. Scott, H. Luttig, M. Strydom, M. Gonelli, D. Kruger, R.G.D. Rankine & T. Broodryk Active thermography as a quality assurance for structural engineering F.U. Vogdt, F. Schaudienst & M. Walsdorf-Maul Infrared Thermography applications for the quality control of concrete elements strengthened with FRP G. Concu, B. De Nicolo, C. Piga & N. Trulli Structural reliability targets for assessment of ageing infrastructure M. Kabani, P. Moyo & M.G. Alexander Impact of mobile cranes on medium span bridges V. Gaya & P. Moyo Materials and structural assessments Lessons from the Big Dig D.W. Fowler Differing results from inspection and load rating of Sikanni Chief Bridge P. Phillips & R. El-Hacha A new life for ultra low strength concrete, Brisbane City Hall A.N. van Grieken Testing, maintenance and reinforcement of the Pietrastretta RA05 motorway viaduct A. Contin, E. Viviani, M. Cavetti & M. Viviani Residual structural performance of deteriorated RC bridge girder with reinforcement corrosion T. Shimomura, Y. Tanaka & T. Yamaguchi Residual shear capacity of continuous reinforced concrete beams Y. Yang, J.A. den Uijl & J.C. Walraven Shear assessment of solid slab bridges E.O.L. Lantsoght, C. van der Veen & J.C. Walraven Upgrading of bridges across rivers to resist ship impact R. Wensauer, M. Keuser, R. Lenner & W. Keuser Through-life management of LPS dwelling blocks, including their structural assessment for accidental loads and actions S.L. Matthews & B. Reeves Condition assessment and repair of concrete tunnel lining after fire K. Mavar & E. Marusic Theme 3: Concrete repair, rehabilitation and retrofitting Repair methods, materials and techniques Random thoughts on concrete repair specifications' ills and treatment prescriptions R.M. Snover, A.M. Vaysburd, B. Bissonnette & D.F. Burke Concrete repair as an engineering task: An approximate solution to an exact problem A.M. Vaysburd, P.H. Emmons & B. Bissonnette Concrete repair materials, polymers and green chemistry-how far synergistic are they? A.K. Chatterjee Performance and service life of repairs of concrete structures in The Netherlands J.H.M. Visser & Q.F. van Zon Development of repair mortars for the restoration of natural stone in cultural heritage P. Ramge & H.-C. Kuhne Maintenance of aged concrete structures of the Hong Kong Housing Authority H.W. Pang, B. Au & K.C. Lau Sustainability-focused maintenance strategy for the public rental housing estates in Hong Kong S.T. Chan, H.W. Pang & B. Au The effect of pulse current on energy saving during Electrochemical Chloride Extraction (ECE) in concrete T.R. Sun, M.R. Geiker & L.M. Ottosen Modern repair technique for an ancient temple R. Anupadma, M.S. Mathews, G.A. Rao & T. Satyamurthy Repair of deteriorated concrete containing recycled aggregates A. Badr & L. McGivern Physico-chemical properties and durability of polymer modified repair materials I.L. Tchetgnia-Ngassam, F. Lespinasse, S. Marceau & T. Chaussadent Polymer-modified Self-Compacting Concrete (PSCC) for concrete repair K.A. Bode & A. Dimmig-Osburg Effect of weathering on polymer modified cement mortars used for the repair and waterproofing of concrete A. Krishnan, P.S. Nair & R. Gettu Case history of polymer-modified cementitious membrane used to protect new and repair concrete P. Nieuwoudt, P. Zaffaroni & C. Pistolesi Use of starch modified concrete as a repair material A.A. Akindahunsi, H.C. Uzoegbo & S.E. Iyuke Mitigation of ASR affected concrete in Boston, MA, USA: A case study A.F. Bentivegna, T. Drimalas, J.H. Ideker & S. Hayman Shrinkage cracking of steel fibre-reinforced and rubberized cement-based mortars T.-H. Nguyen, A. Toumi & A. Turatsinze Development of a liquid bio-based repair system for aged concrete structures V. Wiktor, A. Thijssen & H.M. Jonkers Development of bio-based mortar system for concrete repair M.G. Sierra-Beltran & H.M. Jonkers Full scale application of bacteria-based self-healing concrete for repair purposes H.M. Jonkers & R. Mors Evaluation of crack patterns in SHCC with respect to water permeability and capillary suction C. Wagner, A. Dollase & V. Slowik Cathodic protection of concrete structures with thermally sprayed sacrificial zinc anodes-critical parameters for the protective ability of the sprayed-on anode B. Sederholm, A. Selander & J. Tragardh Repair of concrete members of seaside apartment buildings deteriorated by steel corrosion W. Schwarz, F. Mullner & A. van den Hondel Galvanic corrosion protection of steel in concrete with a zinc mesh anode embedded into a solid electrolyte (EZA): Operational data and service time expectations W. Schwarz, F. Mullner & A. van den Hondel The use of discrete sacrificial anodes in reducing corrosion rate in chloride contaminated reinforced concrete P.A. Arito, H. Beushausen, M.G. Alexander & M. Otieno Bonded concrete overlays and patch repairs Concrete overlays for pavement rehabilitation summary P.C. Taylor & D. Harrington Optimizing the steel fibre and mesh combinations used in repairing existing pavements with Ultra Thin Continuously Reinforced Concrete Pavements (UTCRCP) E.P. Kearsley & H.F. Mostert Effect of repair materials on durability indexes of concrete P. Parbhoo, H. Lyimo & S.O. Ekolu Concrete heritage: Tentative guidelines for the 'Patch Restoration Method' J. Valenca, C. Almeida & E.S. Julio Fatigue crack propagation model for bi-material interfaces S. Ray & J.M. Chandra Kishen Mechanical properties of old concrete-UHPFC interface B.A. Tayeh, B.H.A. Bakar & M.A.M. Johari Bond characteristics of substrate concrete and repair materials M.I. Khan, T.H. Almusallam, S.H. Alsayed, Y.A. Al-Salloum & A.A. Almosa Investigations on the performance of concrete repair mortars in composite specimen tests P. Ramge & H.-C. Kuhne Topography evaluation methods for concrete substrates: Parametric study L. Courard, A. Garbacz & B. Bissonnette Modeling water absorption of the concrete substrate in concrete repairs M. Lukovic, B. Savija, G. Ye & J. Zhou Textile reinforced sprayed mortar for the repair of hydraulic engineering structures J. Orlowsky & M. Raupach Shrinkage stress damage effect in concrete patch repair M.A. Shazali, M.K. Rahman & M.H. Baluch Performance of engineered cementitious composite for concrete repairs subjected to differential shrinkage J. Zhou, G. Ye & T. Sui Cracking characteristics of cement mortars subjected to restrained shrinkage M. Chilwesa & H. Beushausen Structural repairs and strengthening Retrofitting of Bridge B421 over the Olifants River after flood damage W. Findlay & F. Kromhout Strengthening of traffic barriers on bridges along the Kaaimans Pass B.P. Durow, G.A. Visser & E.J. Kruger Assessment and strengthening of R/C hospital building-case study O.M.A. Daoud Repair and dynamic-based condition assessment of impact damage to a freeway overpass bridge near Mossel Bay, South Africa A.A. Newmark, P. Moyo & E.J. Kruger Upgrading of three historic arch bridges over the Orange River near Keimoes, South Africa A.A. Newmark, E.J. Smuts, E.J. Kruger & E. Lourens Analysis and retrofitting design of a single-span R.C. bridge D. Meloni, B. De Nicolo & A. Cabboi Verification of bridge repair assisted by numerical simulation V. Cervenka & J. Cervenka Repairing preloaded square columns by ferrocement jackets made of non-structural WWMs S.M. Mourad & M.J. Shannag Experimental results of RC columns strengthened with Fibre Reinforced Cementitious Mortars P. Colajanni, F. De Domenico, N. Maugeri, A. Recupero, N. Spinella & G. Mantegazza The enhancement of performance on road tunnel lining by epoxy injection and carbon fiber reinforcement J.H. Choo, H.K. Kim, T.J. Lee, S.W. Park & T.G. Yoon Strengthening of R/C Beams using Ultra High Performance Concrete E. Fehling & M. Alkhoury Experimental investigation on the effectiveness of patch repair on the flexural behavior of corroded post-tensioned beams M. Shekarchi, F. Ghasmzadeh, S. Sajedi, S.A. Razavizadeh & M.J. Mohebbi Numerical investigation on the effectiveness of patch repair on the flexural behavior of corroded post-tensioned beams M. Shekarchi, S. Sajedi, F. Ghasemzadeh, S.A. Razavizadeh & A. Manafpour Flexure retrofitting of ribbed one-way reinforced concrete slabs through external reinforcing bars F. Minelli & G.A. Plizzari Analysis of structural rehabilitation of historical masonry with reinforced concrete N.G. Maldonado, P.E. Martin & I.A. Maldonado Dual function carbon fibre strengthening and cathodic protection anode for reinforced concrete structures C.V. Nguyen, P.S. Mangat, P. Lambert, F.J. O'Flaherty & G. Jones Repairing and retrofitting prestressed concrete water tanks in seismic areas K.C. Kuebitz & T. Bloomer Post-installed bars under low installation temperatures C. Mahrenholtz, R. Eligehausen, W. Fuchs & J. Hofmann Application of post-installed anchors for seismic retrofit of RC beam-column joints: Design and validation G. Genesio, R. Eligehausen, A. Sharma & S. Pampanin Retrofitting techniques and FRP systems Anchoring FRP laminates for the seismic strengthening of RC columns R. Sadone, M. Quiertant, E. Ferrier, S. Chataigner & J. Mercier Confinement of short concrete columns with CFRP wraps subjected to concentric and eccentric loading Asad-ur-Rehman Khan & S. Fareed Corner beam-column joints retrofitting with HPFRC jacketing C. Beschi, P. Riva & A. Meda Cracking behaviour of RC members strengthened with CFRP strips W. Ibrahim, J. Hegger & A. Sherif Shear strengthening of RC hollow box bridge columns using FRP and RC jacketing M. Fischinger & T. Isakovic Flexural performance of repaired reinforced concrete beam containing DFRCC materials S.F.U. Ahmed Retrofitting bridges to accommodate single point interchanges on the Gauteng Freeways Improvement Project R. Nel, S.S. Kramer & R.G. Miller Investigation of shear bonding behavior between base concrete and polymer-modified mortar with CFRP grid J. Zhang, K. Ohno, K. Uji, A. Ueno & Y. Ogawa The influence of externally bonded longitudinal TRC reinforcement on the crack pattern of a concrete beam S. Verbruggen, J. Wastiels, T. Tysmans, O. Remy & S. Michez Retrofitting of structural concrete after damage caused by impact or explosion M. Keuser, R. Lenner & M. Fuchs Debonding of external CFRP plates from RC structures caused by cyclic loading effects A.J. Badenhorst & G.P.A.G. van Zijl An improved damage model to predict the failure process in FRP/concrete assemblies K. Benzarti, G. Ruocci, P. Argoul & F. Freddi Mechanical fastening of multi-directional CFRP laminates in concrete P. Desnerck, L. Vasseur & H. Van Hoecke TRM and UHPFRC: Retrofitting solutions for structural elements A. Magri, M. Colombo & M. di Prisco Analytical study on behavior of External shear wall and Internal shear wall as lateral load resisting systems for retrofitting a ten storey building frame S.V. Venkatesh, H. Sharada Bai & S.P. Divya Retrofit of a reinforced concrete building with lead rubber bearing in Iran M.J. Golzar, Y.Y. Nia & M.A.J. Golzar Theme 4: Developments in materials technology, assessment and processing Influence of intensive vacuum mixing on the compressive strength of cementitious materials J. Dils, G. De Schutter & V. Boel Underwater concreting by using two-stage concrete (Laboratory study) H.S. Abdelgader & A.S. El-Baden Robustness improvement of fresh concrete and mortar performance for challenging casting environments with focus on sub-Saharan Africa W. Schmidt, N.S. Msinjili, H.-C. Kuhne, M.V.A. Florea, G. Senthil Kumaran & P. Nibasumba Technical-economical consequences of the use of controlled permeable formwork R. Torrent, A. Griesser, F. Moro & F. Jacobs An investigation on effect of aggregate grading on fresh properties of Self-Consolidating Mortar N.A. Libre, A. Pourzarabi, A.M. Etemadrezaei & M. Shekarchi Strength of recycled aggregate concrete for structural uses S.C. Paul & G.P.A.G. van Zijl Concrete containing steel slag aggregate: Performance after high temperature exposure I. Netinger, M.J. Rukavina, D. Bjegovic & A. Mladenovic Completely Recyclable Concrete: How does the cement paste behave during reclinkering? M. De Schepper, R. Snellings, N. De Belie, K. De Buysser & I. Van Driessche Influence of particle packing on the strength of ecological concrete S.A.A.M. Fennis, J.C. Walraven & J.A. den Uijl Development of geo-polymer based Ductile Fibre Reinforced Cementitious Composites (DFRCC) S.F.U. Ahmed, M. Hossain & Y.Y. Lu Load-deformation behavior of hybrid elements of PCC and CC under flexural stress A. Flohr & A. Dimmig-Osburg Fatigue behaviour of self-compacting concrete S. Korte, V. Boel, W. De Corte & G. De Schutter Velocity profile of self compacting concrete and traditional concrete flowing in a half open pipe H.D. Le, G. De Schutter, E.H. Kadri, S. Aggoun, J. Vierendeels & P. Troch Deformation of concrete subject to freeze-thaw cycles combined with chloride salt solution Z. Wang, Y. Yao, L. Wang & Y. Cao Thermal expansion of high-performance cement paste and mortar at early age M. Wyrzykowski & P. Lura Development of new lime binder for building bio-aggregate materials T.M. Dinh, C. Magniont, M. Coutand & G. Escadeillas 'Buffer' effects of natural zeolites in blended cements R. Snellings Evaluation of steel fiber distribution in a concrete matrix S.A. Yehia Contribution to study of the self-healing effect activated by crystalline catalysts in concrete structures when subjected to continuous exposure to water E.M. Takagi, M.G. Lima & P.R.L. Helene Strength behaviour of clay-cement concrete and quality implications for low-cost construction materials F. Solomon & S. Ekolu Characterisation and description of the structure of metakaolin by total scattering, density functional theory, and X-ray spectroscopy C.E. White, J.L. Provis, D.P. Riley, Th. Proffen, L.M. Perander & J.S.J. van Deventer The comparison between the cracking behaviour of bending and tension for Strain Hardening Cement-based Composites (SHCC) P.D. Nieuwoudt & W.P. Boshoff Influence of temperature on the hydration of blended cements B. Lothenbach & G. Le Saout Thermodynamic modeling of sulfate interaction B. Lothenbach, W. Kunther & A.E. Idiart An ongoing investigation on modeling the strength properties of water-entrained cement-based materials L.P. Esteves Theme 5: Concrete technology and structural design Concrete knowledge improvement in sub-Saharan Africa N.S. Msinjili, W. Schmidt, G.J.G. Gluth, M.V.A. Florea, G. Senthil Kumaran, A.A. Akindahunsi, H.C. Uzoegbo & I.S. Oslakovic Evaluation of concrete quality in Libya M.S. Alazhari & M.M. Al Shebani Who will be making high performance concrete? M. Khrapko The role of the structural engineer in the design of low embodied energy concrete-frame buildings R. Muigai, M.G. Alexander & P. Moyo Synthetic climate modeling for estimating the impact of global warming on construction materials D. Breysse, M. Chaplain & A. Marache Resistance factors for shear capacity of ordinary and lightweight R/C beams A.S. Nowak & A.M. Rakoczy Global safety factor for slender reinforced concrete structures D.L. Allaix, V.I. Carbone & G. Mancini Time-dependent analysis of segmentally constructed cantilever bridge comparing two different creep models G.F. Giaccu, D. Solinas & G.P. Gamberini Author index