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Proceedings pro052 : International RILEM Conference on Volume Changes of Hardening Concrete: Testing and Mitigation


Title: International RILEM Conference on Volume Changes of Hardening Concrete: Testing and Mitigation
Edited by O. M. Jensen, P. Lura, K. Kovler
ISBN: 2-35158-004-4
e-ISBN: 2351580052
Pages: 428
Publication date: 2006

The RILEM conference "Volume Changes of Hardening Concrete: Testing and Mitigation", 20-23 August 2006, Lyngby, Denmark, is hosted by the Department of Civil Engineering at the Technical University of Denmark (BYG-DTU). The event is scientifically sponsored by RILEM - International Union of Testing and Research Laboratories for Materials and Structures, through the technical committees: TC 196-ICC Internal curing of concrete and TC 195-DTD Recommendation for test methods for autogenous deformation and thermal dilation of early age concrete, and financially sponsored by the Knud Højgaard Foundation.

The conference broadly concerns all aspects of volume changes of hardening concrete. In particular, it concerns themes with relation to the aforementioned RILEM technical committees, including autogenous shrinkage, which is a phenomenon ingrained in high-strength/high-performance concrete (HSC/HPC) of low water/binder ratio matrix. Autogenous shrinkage may be mitigated through water curing. However, conventional curing procedures of ponding in water are not sufficiently effective, because the penetration of water from the externally ponded surface is limited. In view of these limitations, different strategies have been developed in recent years, based on the use of internal reservoirs of water - so-called internal water curing.

At early ages another important volume change mechanism is thermal dilation. This is an additional driving force of cracking in hardening concrete structures. Thermal dilation is higher in HSC/HPC, because the hydration-generated temperature rise becomes higher due to a higher binder content. Reliable test methods are needed in order to develop useful material models and to establish a better fundamental understanding of the two main volume change mechanisms. This is the basis for further development of durable HSC/HPC


Contents


Foreword
Author(s): Ole Mejlhede Jensen, Pietro Lura, Konstantin Kovler
Pages: IX - IX

Good conduct in the sciences
Author(s): Vagn Lundsgaard Hansen
Pages: 1 - 10

Four-dimensional X-ray microtomography study of water movement during internal curing
Author(s): Dale P. Bentz, Phillip M. Halleck, Abraham S. Grader, John W. Roberts
Pages: 11 - 20

Experimental evaluation of mitigation of autogenous shrinkage by means of a vertical dilatometer for concrete
Author(s): Bart Craeye, Geert De Schutter
Pages: 21 - 30

Influence of lightweight aggregates on internal curing and fracture of concrete
Author(s): Burcu Akcay, Mehmet Ali Tasdemir
Pages: 31 - 40

Volume changes and restrained stress of lightweight concrete and expansive concrete
Author(s): Zhihai Lin, Toshiharu Kishi
Pages: 41 - 50

Internal relative humidity and autogenous shrinkage of low water/binder ratio concrete
Author(s): Fazhou Wang, Yufei Zhou, Zhichao Liu, Shuguang Hu
Pages: 51 - 55

Autogenous strain of cement pastes with superabsorbent polymers
Author(s): Pietro Lura, Félix Durand, Ole Mejlhede Jensen
Pages: 57 - 65

Results of a comparative study of the shrinkage behaviour of concrete and mortar mixtures with different internal water sources
Author(s): Sven Mönnig, Hans-W. Reinhardt
Pages: 67 - 75

Experimental study on prevention of autogenous deformation by internal curing using super-absorbent polymer particles
Author(s): Shin-ichi Igarashi, Akio Watanabe
Pages: 77 - 86

Internal curing by super absorbent polymers (SAP) – effects on material properties of self-compacting fibre-reinforced high performance concrete
Author(s): Viktor Mechtcherine, Lukasz Dudziak, Joachim Schulze
Pages: 87 - 96

Mitigating autogenous shrinkage in HPC by internal curing using superabsorbent polymers
Author(s): J. Piérard, V. Pollet, N. Cauberg
Pages: 97 - 106

Efficiency of internal curing with water-saturated lightweight aggregates in terms of autogenous shrinkage reduction
Author(s): Konstantin Kovler, Arnon Bentur
Pages: 107 - 115

Compressive strength of cement pastes and mortars with superabsorbent polymers
Author(s): Pietro Lura, Félix Durand, Ahmed Loukili, Konstantin Kovler, Ole Mejlhede Jensen
Pages: 117 - 125

Mitigation of autogenous shrinkage in mortars: analysis and modeling of water migration and comparison of various internal curing materials
Author(s): Benjamin J. Mohr, Kristen L. Hood, George R. Buchanan
Pages: 127 - 136

Multi-scale modelling of autogenous strains of an internally cured cementitious material
Author(s): Mateusz Wyrzykowski, Dariusz Gawin, Francesco Pesavento, Pietro Lura
Pages: 137 - 146

Internal post-curing of hydrating cement pastes of high performance concretes studied by low-field NMR relaxometry
Author(s): Karen Friedemann, Frank Stallmach, Nikolaus Nestle, Jörg Kärger
Pages: 147 - 155

Numerical simulation and assessment of self-induced tensile stress in steel ring restrained concrete specimens
Author(s): Xinwei Ma, R. Doug Hooton
Pages: 157 - 164

Shrinkage of slag cement concrete in free and restrained conditions
Author(s): A. Darquennes, S. Staquet, B. Espion
Pages: 165 - 174

Alkali-silica reactions: mechanisms for crack formations
Author(s): Per Goltermann
Pages: 175 - 184

Early-age shrinkage control and strength development of concrete
Author(s): C.R. Braam, H.W.M. van der Ham, E.A.B. Koenders
Pages: 185 - 194

Reduction of volume changes of concrete - effects on state of stress of foundation
Author(s): Radim Cajka, Petr Manásek, David Sekanina
Pages: 195 - 204

The ring test: a review of recent developments
Author(s): Aleksandra Radlinska, Jae Heum Moon, Farshad Rajabipour, Jason Weiss
Pages: 205 - 214

Evaluation of failure criteria of shrinkage cracking for restrained concrete
Author(s): Manabu Ohya, Toyoharu Nawa
Pages: 215 - 221

Effect of the synergy of two shrinkage reducing admixtures
Author(s): António B. Ribeiro, Ana Carrajola, Arlindo Gonçalves, Fernando Branco
Pages: 223 - 230

Volume deformations of vertical members of the skeleton cast-in-place reinforced concrete buildings
Author(s): Vitaliy I. Veretennykov, Maksym S. Bulavytskyi, Andriy O. Dolmatov
Pages: 231 - 240

Volume changes, cracking and durability of cement grouts subjected to accelerated wetting and drying cycles
Author(s): Paulo H. R. Borges, Neil B. Milestone, Cyril J. Lynsdale
Pages: 241 - 250

Early age cracking of self-compacting concrete
Author(s): Ingemar Löfgren, Oskar Esping
Pages: 251 - 260

Influence of mix composition on early-age autogenous deformations of cement pastes
Author(s): Patrick Fontana, Birgit Meng
Pages: 261 - 272

Investigation of autogenous deformation in self-compacting concrete
Author(s): Oskar Esping
Pages: 273 - 282

Early volume changes of high performance self-compacting cementitious systems containing pozzolanic powders
Author(s): Syed Ali Rizwan, Thomas A. Thomas A. Bier
Pages: 283 - 292

A mini-TSTM for measuring paste deformations at early ages
Author(s): Eddy Koenders, Erik Schlangen, Greet Leegwater
Pages: 293 - 302

On the effect of mixing on property development of cement pastes
Author(s): Mette R. Geiker, Anja Bøhm, Ane Mette Kjeldsen
Pages: 303 - 310

Effect of setting retarder on the early age deformations of self-compacting mortars
Author(s): Pierre Mounanga, Ahmed Loukili, Marwen Bouasker, Abdelhafid Khelidj, Roger Coué
Pages: 311 - 320

Measuring early-age coefficient of thermal expansion in high-performance concrete
Author(s): Daniel Cusson, Ted Hoogeveen
Pages: 321 - 330

Estimation method for thermal expansion coefficient of concrete at early ages
Author(s): Mitsuo Ozawa, Hiroaki Morimoto
Pages: 331 - 339

Testing of autogenous deformation (AD) and thermal dilation (TD) of early age mortar and concrete – Recommended test procedure
Author(s): Tor Arne Hammer, Øyvind Bjøntegaard
Pages: 341 - 346

Statistical evaluation of autogenous deformation tests results performed in the RILEM Technical Committee 195-DTD framework
Author(s): Matias Krauß, Øyvind Bjøntegaard, Tor Arne Hammer
Pages: 347 - 356

RILEM Technical Committee 195-DTD: Motive and technical content
Author(s): Øyvind Bjøntegaard, Tor Arne Hammer
Pages: 357 - 366

Autogenous deformation of Portland cement paste blended with blast furnace slag measured by mini-TSTM
Author(s): Jian Zhou, Guang Ye, Erik Schlangen, Klaas van Breugel
Pages: 367 - 374

A discussion of analysis approaches for determining ‘time-zero’ from chemical shrinkage and autogenous strain measurements in cement paste
Author(s): Gaurav Sant, Pietro Lura, Jason Weiss
Pages: 375 - 383

Detection of early-age cracking using acoustic emission
Author(s): Stephan Pirskawetz, Frank Weise
Pages: 385 - 392

Use of acoustic emission to detect cavitation and solidification (time zero) in cement pastes
Author(s): Jon Couch, Pietro Lura, Ole Mejlhede Jensen, Jason Weiss
Pages: 393 - 400

Study on the self-desiccation effect in early-age concrete and the determination of “time-zero” of self-desiccation shrinkage
Author(s): Jia-ping Liu, Qian Tian, Wei Sun, Chang-wen Miao, Ming-shu Tang
Pages: 401 - 410