Internal Swelling Reactions In Concrete

Author : António C. Azevedo,Fernando A.N. Silva,João M.P.Q. Delgado,Nicole P.S. Souza,Mahfoud Tahlaiti,Abdelhafid Khelidj
Publisher : Springer Nature
Page : 82 pages
File Size : 40,6 Mb
Release : 2021-06-18
Category : Technology & Engineering
ISBN : 9783030764975

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Diagnostic of Concrete Samples Affected by Internal Swelling Reactions by António C. Azevedo,Fernando A.N. Silva,João M.P.Q. Delgado,Nicole P.S. Souza,Mahfoud Tahlaiti,Abdelhafid Khelidj Pdf

This book offers a complete diagnosis of concrete samples collected from a pile cap block of residential buildings affected by internal swelling reactions. Covering an extensive laboratory campaign to evaluate the transport properties of concrete samples, as well as their physical and chemical composition using advanced techniques to analyse cores extracted from real buildings that have concrete elements affected by internal swelling reactions (ISR). It features several rehabilitation procedures, pile caps repair and rehabilitation design, executed using strengthening procedures to provide the complete restoration of the structural integrity of the element deteriorated. These rehabilitation procedures proved to be a good solution to retrofit pile cap deteriorated by expansions due to internal swelling reactions of concrete. The book also offers a systematic review of the current state of knowledge and it is a valuable resource for scientists, students, and practitioners in various scientific and engineering disciplines, namely, civil and materials engineering, as well as and other interested parties.

Author : Leandro F. M. Sanchez
Publisher : CRC Press
Page : 220 pages
File Size : 55,7 Mb
Release : 2024-02-19
Category : Technology & Engineering
ISBN : 9781003837923

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Internal Swelling Reactions in Concrete by Leandro F. M. Sanchez Pdf

As critical concrete infrastructure deteriorates, engineers need efficient and reliable techniques to appraise the causes and the extent of deterioration, to evaluate the structural consequences and to select effective management protocols and rehabilitation strategies. This book looks at deterioration caused by internal swelling reaction (ISR) mechanisms in concrete, such as alkali-aggregate reaction, delayed ettringite formation and freeze-thaw cycles. The book provides accessible and comprehensive coverage of recent work and developments on the most common ISR mechanisms leading to induced expansion and deterioration. It addresses the implications of ISR on different scales (micro, meso and macro), outlines qualitative and quantitative techniques to assess the condition of affected concrete and introduces the multi-level assessment protocol, using advanced microscopic and mechanical techniques, particularly the stiffness damage test and damage rating index, as a reliable approach to appraise ISR-affected infrastructure. Also included is a detailed case study of the Robert-Bourassa Charest Overpass in Quebec. Internal Swelling Reactions in Concrete: Mechanisms and Condition Assessment is primarily intended for undergraduate and graduate students, as well as academics interested in the field of concrete durability and condition assessment of concrete. It will also be of interest to engineers and infrastructure owners dealing with ISR-related problems.

Author : Leandro F. M. Sanchez
Publisher : Springer Nature
Page : 748 pages
File Size : 42,8 Mb
Release : 2024-06-30
Category : Electronic
ISBN : 9783031593499

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Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete by Leandro F. M. Sanchez Pdf

Author : Alain Sellier,Étienne Grimal,Stéphane Multon,Eric Bourdarot
Publisher : John Wiley & Sons
Page : 388 pages
File Size : 54,6 Mb
Release : 2017-08-07
Category : Technology & Engineering
ISBN : 9781786302137

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Swelling Concrete in Dams and Hydraulic Structures by Alain Sellier,Étienne Grimal,Stéphane Multon,Eric Bourdarot Pdf

The swelling of concrete is a major concern for the owners and operators of dams and hydraulic structures. Faced with irreversible movement of their dams or with observations of cracking processes, operators need to explain the phenomena observed in order to justify safety conditions and in some cases to plan remedial works. Over the last 20 years, active research has been carried out in the field, resulting in practical results in phenomena interpretation and dam modeling. At the same time, an increasing number of affected dams have undergone safety re-evaluations and in some cases remedial work. Several of them have been removed altogether. Although it remains difficult to establish a “state of the art” in this domain due to the rapidly changing context, regular international exchanges in the field appear fruitful and necessary. Following on from previous conferences in the field organized by Robin Charlwood, former President of the ICOLD Concrete Committee, the initiative was taken by EDF and Toulouse University-LMDC to organize a workshop to provide a new opportunity for sharing experience. The aim of this workshop is to assemble active researchers, leading engineers, and experts from the practicing community and administration interested directly or indirectly in concrete swelling effects in dams and hydraulic structures. All types of chemical expansion phenomena, including those due to alkali aggregate reactions and those due to ettringite formation, are addressed. These proceedings include 24 papers written by experts renowned in their field, illustrating the need to progress with interdisciplinary approaches.

Author : Marc-Andre Berube,Benoit Fournier
Publisher : Unknown
Page : 128 pages
File Size : 49,8 Mb
Release : 2024-06-30
Category : Electronic
ISBN : 2884492151

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Alkali-Aggregate Reaction in Concrete by Marc-Andre Berube,Benoit Fournier Pdf

Author : Leandro F.M. Sanchez,Cassandra Trottier
Publisher : Springer
Page : 0 pages
File Size : 43,7 Mb
Release : 2024-06-07
Category : Technology & Engineering
ISBN : 3031594185

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Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete by Leandro F.M. Sanchez,Cassandra Trottier Pdf

This book gathers the peer-reviewed papers presented at the 17th International Conference on Alkali-Aggregate Reaction in Concrete (ICAAR), held in Ottawa, Ontario, Canada, on May 19-24, 2024. It highlights the latest advances and innovations in the field of internal swelling reactions, particularly alkali-aggregate reaction (AAR), and combined mechanisms such as delayed ettringite formation (DEF). The conference topics encompass understanding the reaction mechanisms and the affecting factors; testing methods and preventative measures; diagnosis, evaluation, and prognosis; monitoring and NDT; structural effects and modeling at all scales; repair and remedial measures; and combined mechanisms (e.g., DEF). The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster new multidisciplinary collaborations.

Author : Leandro F.M. Sanchez,Cassandra Trottier
Publisher : Springer
Page : 0 pages
File Size : 41,8 Mb
Release : 2024-06-06
Category : Technology & Engineering
ISBN : 3031593480

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Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete by Leandro F.M. Sanchez,Cassandra Trottier Pdf

This book gathers the peer-reviewed papers presented at the 17th International Conference on Alkali-Aggregate Reaction in Concrete (ICAAR), held in Ottawa, Ontario, Canada, on May 19–24, 2024. It highlights the latest advances and innovations in the field of internal swelling reactions, particularly alkali-aggregate reaction (AAR), and combined mechanisms such as delayed ettringite formation (DEF). The conference topics encompass understanding the reaction mechanisms and the affecting factors; testing methods and preventative measures; diagnosis, evaluation, and prognosis; monitoring and NDT; structural effects and modeling at all scales; repair and remedial measures; and combined mechanisms (e.g., DEF). The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster new multidisciplinary collaborations.

Author : António C. Azevedo,Fernando A.N. Silva,João M.P.Q. Delgado,Isaque Lira
Publisher : Springer Nature
Page : 93 pages
File Size : 52,6 Mb
Release : 2022-09-14
Category : Technology & Engineering
ISBN : 9783031122675

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Concrete Structures Deteriorated by Delayed Ettringite Formation and Alkali-Silica Reactions by António C. Azevedo,Fernando A.N. Silva,João M.P.Q. Delgado,Isaque Lira Pdf

This book discusses the behaviour of isolated concrete bottle-shaped struts affected by internal expansion reactions (ISR). For that purpose, the numerical modelling of damaged concrete was performed using the Concrete Damaged Plasticity Model (CDPM) implemented in ABAQUS and validated the model through Sankovich's tests. A procedure to automatically obtain the concrete plasticity and damage parameters, essential for CDPM, was developed in Matlab. The inputs were the characteristic compressive strength of the concrete, the equivalent length of the finite element mesh and the ratio between the plastic and inelastic compressive strains. The results showed that the CDPM could represent the load-bearing mechanisms of isolated concrete bottle-shaped struts for a range of several stress levels to which these elements may be subjected in the panels investigated. The numerical simulations for different expansion levels consistently captured the expected damage profile of the panels and the load corresponding to the formation of the first crack, the estimated crack opening, and the ultimate load. For the panels investigated, the reduction observed in the failure load reached values close to 70%, the increase of the tensile plastic deformation was more than 60%, and the maximum crack opening can reach an increase of 113% when compared with those observed experimentally in panels without internal swelling reactions The book also offers a systematic review of the current state of knowledge and it is a valuable resource for scientists, students, practitioners, and lecturers in various scientific and engineering disciplines, namely, civil and materials engineering, as well as and other interested parties.

Author : James A. Farny,Beatrix Kerkhoff,Portland Cement Association
Publisher : Unknown
Page : 28 pages
File Size : 55,7 Mb
Release : 1997
Category : Technology & Engineering
ISBN : CORNELL:31924080951043

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Diagnosis and Control of Alkali-aggregate Reactions in Concrete by James A. Farny,Beatrix Kerkhoff,Portland Cement Association Pdf

Aggregates containing certain constituents can react with alkali hydroxides in concrete. The reactivity is potentially harmful only when it produces significant expansion. This alkali-aggregate reactivity (AAR) has two forms--alkali-silica reaction (ASR) and alkali-carbonate reaction (ACR, sometimes called alkali-carbonate rock reaction, or ACRR). ASR is of more concern than ACR because the occurrence of aggregates containing reactive silica minerals is more common. Alkali-reactive carbonate aggregates have a specific composition that is not very common. Alkali-silica reactivity has been recognized as a potential source of distress in concrete since the later 1930s. Even though potentially reactive aggregates exist throughout North America, ASR distress in structural concrete is not common. There are a number of reasons for this: 1. Most aggregates are chemically stable in hydraulic-cement concrete 2. Aggregates with good service records are abundant in many areas 3. The concrete in service is dry enough to inhibit ASR 4. The use of certain pozzolans or slags controls ASR 5. In many concrete mixtures, the alkali content of the concrete is low enough to control harmful ASR 6. Some forms of ASR do not produce significant deleterious expansion To reduce ASR potential requires understanding the ASR mechanism; properly using tests to identify potentially reactive aggregates; and, if needed, taking steps to minimize the potential for expansion and related cracking. Alkali-carbonate reaction in concrete was not documented until 1957. Although ACR is much less common, this report also briefly reviews the mechanism, visual distress symptoms, identification tests, and control measures.

Author : John S. Scott
Publisher : Springer Science & Business Media
Page : 582 pages
File Size : 44,8 Mb
Release : 1993
Category : Reference
ISBN : 0412984210

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Dictionary Of Civil Engineering by John S. Scott Pdf

New edition of, variously, The Penguire Dictionary ..., The VNR Dict ..., and, under the Halsted imprint, this exact title in its third edition, 1980. A classic under any name. Annotation copyright Book News, Inc. Portland, Or.

Author : R N Swamy
Publisher : CRC Press
Page : 288 pages
File Size : 41,5 Mb
Release : 2011-11-11
Category : Architecture
ISBN : 0415513014

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The Alkali-Silica Reaction in Concrete by R N Swamy Pdf

This book reviews the fundamental causes and spectrum effects of ASR. It considers he advances that have been made in our understanding of this problem throughout the world.

Author : Ian Sims,Alan B. Poole
Publisher : CRC Press
Page : 1278 pages
File Size : 55,7 Mb
Release : 2017-08-01
Category : Science
ISBN : 9781317484417

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Alkali-Aggregate Reaction in Concrete by Ian Sims,Alan B. Poole Pdf

Alkali-Aggregate Reaction in Concrete: A World Review is unique in providing authoritative and up to date expert information on the causes and effects of Alkali-Aggregate Reaction (AAR) in concrete structures worldwide. In 1992 a first edition entitled The Alkali-Silica Reaction in Concrete, edited by Professor Narayan Swamy, was published in a first attempt to cover this concrete problem from a global perspective, but the coverage was incomplete. This completely new edition offers a fully updated and more universal coverage of the world situation concerning AAR and includes a wealth of new evidence and research information that has accumulated in the intervening years. Although there are various textbooks offering readers sections that deal with AAR deterioration and damage to concrete, no other single book brings together the views of recognised international experts in the field, and the wealth of scattered research information that is available. It provides a ‘state of the art’ review and deals authoritatively with the mechanisms of AAR, its diagnosis and how to treat concrete affected by AAR. It is illustrated by numerous actual examples from around the world, and comprises specialist contributions provided by senior engineers and scientists from many parts of the world. The book is divided into two distinct but complementary parts. The first five chapters deal with the most recent findings concerning the mechanisms involved in the reaction, methods concerning its diagnosis, testing and evaluation, together with an appraisal of current methods used in its avoidance and in the remediation of affected concrete structures. The second part is divided into eleven chapters covering each region of the world in turn. These chapters have been written by experts with specialist knowledge of AAR in the countries involved and include an authoritative appraisal of the problem and its solution as it affects concrete structures in the region. Such an authoritative compilation of information on AAR has not been attempted previously on this scale and this work is therefore an essential source for practising and research civil engineers, consultant engineers and materials scientists, as well as aggregate and cement producers, designers and concrete suppliers, especially regarding projects outside their own region.

Author : Geoffrey E. Blight,Mark G Alexander
Publisher : CRC Press
Page : 250 pages
File Size : 50,6 Mb
Release : 2011-01-18
Category : Science
ISBN : 9780203093214

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Alkali-Aggregate Reaction and Structural Damage to Concrete by Geoffrey E. Blight,Mark G Alexander Pdf

Since AAR was first identified in 1940, it has been a subject dominated by studies of the mineralogy of AAR-susceptible aggregates, the chemistry of the AAR and related reactions and laboratory tests used to diagnose AAR and predict potential future swelling. Civil and structural engineers have found the literature bewildering and difficult to appl

Author : Günther Meschke,Bernhard Pichler,Jan G. Rots
Publisher : CRC Press
Page : 1034 pages
File Size : 45,8 Mb
Release : 2018-01-31
Category : Technology & Engineering
ISBN : 9781351726764

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Computational Modelling of Concrete Structures by Günther Meschke,Bernhard Pichler,Jan G. Rots Pdf

The EURO-C conference series (Split 1984, Zell am See 1990, Innsbruck 1994, Badgastein 1998, St. Johann im Pongau 2003, Mayrhofen 2006, Schladming 2010, St. Anton am Arlberg 2014, and Bad Hofgastein 2018) brings together researchers and practising engineers concerned with theoretical, algorithmic and validation aspects associated with computational simulations of concrete and concrete structures. Computational Modelling of Concrete Structures reviews and discusses research advancements and the applicability and robustness of methods and models for reliable analysis of complex concrete, reinforced concrete and pre-stressed concrete structures in engineering practice. The contributions cover both computational mechanics and computational modelling aspects of the analysis and design of concrete and concrete structures: Multi-scale cement and concrete research: experiments and modelling Aging concrete: from very early ages to decades-long durability Advances in material modelling of plain concrete Analysis of reinforced concrete structures Steel-concrete interaction, fibre-reinforced concrete, and masonry Dynamic behaviour: from seismic retrofit to impact simulation Computational Modelling of Concrete Structures is of special interest to academics and researchers in computational concrete mechanics, as well as industry experts in complex nonlinear simulations of concrete structures.

Author : Alain Sellier,Étienne Grimal,Stéphane Multon,Eric Bourdarot
Publisher : John Wiley & Sons
Page : 380 pages
File Size : 41,8 Mb
Release : 2017-07-19
Category : Technology & Engineering
ISBN : 9781119448921

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Swelling Concrete in Dams and Hydraulic Structures by Alain Sellier,Étienne Grimal,Stéphane Multon,Eric Bourdarot Pdf

The swelling of concrete is a major concern for the owners and operators of dams and hydraulic structures. Faced with irreversible movement of their dams or with observations of cracking processes, operators need to explain the phenomena observed in order to justify safety conditions and in some cases to plan remedial works. Over the last 20 years, active research has been carried out in the field, resulting in practical results in phenomena interpretation and dam modeling. At the same time, an increasing number of affected dams have undergone safety re-evaluations and in some cases remedial work. Several of them have been removed altogether. Although it remains difficult to establish a “state of the art” in this domain due to the rapidly changing context, regular international exchanges in the field appear fruitful and necessary. Following on from previous conferences in the field organized by Robin Charlwood, former President of the ICOLD Concrete Committee, the initiative was taken by EDF and Toulouse University-LMDC to organize a workshop to provide a new opportunity for sharing experience. The aim of this workshop is to assemble active researchers, leading engineers, and experts from the practicing community and administration interested directly or indirectly in concrete swelling effects in dams and hydraulic structures. All types of chemical expansion phenomena, including those due to alkali aggregate reactions and those due to ettringite formation, are addressed. These proceedings include 24 papers written by experts renowned in their field, illustrating the need to progress with interdisciplinary approaches.