Diagnosis And Control Of Alkali Aggregate Reactions In Concrete

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Diagnosis and Control of Alkali-aggregate Reactions in Concrete

Author : James A. Farny
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Diagnosis and Control of Alkali-aggregate Reactions in Concrete by : James A. Farny

Download or read book Diagnosis and Control of Alkali-aggregate Reactions in Concrete written by James A. Farny and published by . This book was released on 1997 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Alkali-Aggregate Reaction in Concrete

Author : Ian Sims
Publisher : CRC Press
ISBN 13 : 1317484428
Total Pages : 768 pages
Book Rating : 4.3/5 (174 download)

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Book Synopsis Alkali-Aggregate Reaction in Concrete by : Ian Sims

Download or read book Alkali-Aggregate Reaction in Concrete written by Ian Sims and published by CRC Press. This book was released on 2017-08-01 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Guide to Diagnosis and Appraisal of AAR Damage to Concrete in Structures

Author : Bruno Godart
Publisher : Springer Science & Business Media
ISBN 13 : 9400765673
Total Pages : 91 pages
Book Rating : 4.4/5 (7 download)

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Book Synopsis Guide to Diagnosis and Appraisal of AAR Damage to Concrete in Structures by : Bruno Godart

Download or read book Guide to Diagnosis and Appraisal of AAR Damage to Concrete in Structures written by Bruno Godart and published by Springer Science & Business Media. This book was released on 2013-04-08 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes procedures and methodologies used predominantly to obtain a diagnosis of damaged concrete possibly caused by Alkali-Aggregate Reaction (AAR). It has two primary objectives, namely firstly to identify the presence of AAR reaction, and whether or not the reaction is the primary or contributory cause of damage in the concrete; and secondly, to establish its intensity (severity) in various members of a structure. It includes aspects such as field inspection of the structure, sampling, petrographic examination of core samples, and supplementary tests and analyses on cores, such as mechanical tests and chemical analysis. Evaluation of test data for prognosis, consequences and appraisal will be more fully set out in AAR-6.2.

Guide to the Evaluation and Management of Concrete Structures Affected by Alkali-aggregate Reaction

Author : CSA International
Publisher :
ISBN 13 : 9781553241683
Total Pages : 108 pages
Book Rating : 4.2/5 (416 download)

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Book Synopsis Guide to the Evaluation and Management of Concrete Structures Affected by Alkali-aggregate Reaction by : CSA International

Download or read book Guide to the Evaluation and Management of Concrete Structures Affected by Alkali-aggregate Reaction written by CSA International and published by . This book was released on 2000 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Guide has been written by Canadian experts on the diagnosis and treatment of concrete structures affected by alkali-aggregate reaction (AAR). The purpose of the Guide is to provide information on the signs and symptoms of concrete affected by AAR, how to identify AAR and distinguish it from other mechanisms of concrete deterioration, and how to assess the extent and severity of AAR in concrete. It also provides advice on the best ways of evaluating, maintaining, and treating structures affected by AAR. This guide will be of use to people involved in such work and to the owners of structures affected by AAR.

Alkali-Aggregate Reaction in Concrete

Author : Marc-Andre Berube
Publisher :
ISBN 13 : 9782884492157
Total Pages : pages
Book Rating : 4.4/5 (921 download)

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Book Synopsis Alkali-Aggregate Reaction in Concrete by : Marc-Andre Berube

Download or read book Alkali-Aggregate Reaction in Concrete written by Marc-Andre Berube and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Alkali-Aggregate Reaction and Structural Damage to Concrete

Author : Geoffrey E. Blight
Publisher : CRC Press
ISBN 13 : 0203093216
Total Pages : 250 pages
Book Rating : 4.2/5 (3 download)

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Book Synopsis Alkali-Aggregate Reaction and Structural Damage to Concrete by : Geoffrey E. Blight

Download or read book Alkali-Aggregate Reaction and Structural Damage to Concrete written by Geoffrey E. Blight and published by CRC Press. This book was released on 2011-01-18 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Alkali-aggregate Reaction in Concrete

Author :
Publisher :
ISBN 13 :
Total Pages : 25 pages
Book Rating : 4.:/5 (614 download)

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Book Synopsis Alkali-aggregate Reaction in Concrete by :

Download or read book Alkali-aggregate Reaction in Concrete written by and published by . This book was released on 2000 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents theoretical and applied state-of-the-art information in the field of alkali-aggregate reactivity (AAR) in concrete. The aspects discussed include basic concepts of the reaction and expansion mechnasims, conditions conducive to the development and the sustainability of AAR in concrete, field and laboratory investigation program for evaluating the potential alkali-reactivity of concret aggregates, selection of preventive measures against AAR, and the management of structures affected by AAR. The management section includes the diagnosis of AAR in existing concrete structures, evaluation of potential for future distress due to AAR, and mitigation and repair approaches used on such structures. This is an introductory paper and sets the stage for a special review of the current AAR situation in the various regions of Canada that is presented in seven papers as part of this issue.

Guide to Diagnosis and Appraisal of AAR Damage to Concrete in Structures

Author : Bruno Godart
Publisher : Springer
ISBN 13 : 9789400765689
Total Pages : 104 pages
Book Rating : 4.7/5 (656 download)

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Book Synopsis Guide to Diagnosis and Appraisal of AAR Damage to Concrete in Structures by : Bruno Godart

Download or read book Guide to Diagnosis and Appraisal of AAR Damage to Concrete in Structures written by Bruno Godart and published by Springer. This book was released on 2013-04-30 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes procedures and methods for obtaining a diagnosis of concrete damage caused by Alkali-Aggregate Reaction (AAR). Covers field inspection, sampling, petrographic examination of core samples and supplementary tests and analyses on cores.

RILEM Recommendations for the Prevention of Damage by Alkali-Aggregate Reactions in New Concrete Structures

Author : Philip J. Nixon
Publisher : Springer
ISBN 13 : 9401772525
Total Pages : 168 pages
Book Rating : 4.4/5 (17 download)

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Book Synopsis RILEM Recommendations for the Prevention of Damage by Alkali-Aggregate Reactions in New Concrete Structures by : Philip J. Nixon

Download or read book RILEM Recommendations for the Prevention of Damage by Alkali-Aggregate Reactions in New Concrete Structures written by Philip J. Nixon and published by Springer. This book was released on 2015-09-30 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the full set of RILEM Recommendations which have been produced to enable engineers, specifiers and testing houses to design and produce concrete which will not suffer damage arising from alkali reactions in the concrete. There are five recommended test methods for aggregates (designated AAR-1 to AAR-5), and an overall recommendation which describes how these should be used to enable a comprehensive aggregate assessment (AAR-0). Additionally, there are two Recommended International Specifications for concrete (AAR-7.1 & 7.2) and a Preliminary International Specification for dams and other hydro structures (AAR-7.3), which describe how the aggregate assessment can be combined with other measures in the design of the concrete to produce a concrete with a minimised risk of developing damage from alkali-aggregate reactions.

The Diagnosis of Alkali-silica Reaction

Author : D. Palmer
Publisher :
ISBN 13 : 9780721013695
Total Pages : 36 pages
Book Rating : 4.0/5 (136 download)

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Book Synopsis The Diagnosis of Alkali-silica Reaction by : D. Palmer

Download or read book The Diagnosis of Alkali-silica Reaction written by D. Palmer and published by . This book was released on 1988 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by a working party whose members were drawn from a number of organizations concerned with ASR and its diagnosis, this report is intended to assist investigators and laboratory staff in their work. But it is also written with the engineer and the structure's owner in mind, so that they may have a better understanding of what is needed to produce a reliable diagnosis of ASR. It contains a general introduction and deals with site inspection, sampling, laboratory investigation and assessment of the results. There is also some guidance on assessing the future of a structure in which ASR has been diagnosed.

Proceedings of the III Advanced Ceramics and Applications Conference

Author : William E. Lee
Publisher : Springer
ISBN 13 : 9462391572
Total Pages : 383 pages
Book Rating : 4.4/5 (623 download)

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Book Synopsis Proceedings of the III Advanced Ceramics and Applications Conference by : William E. Lee

Download or read book Proceedings of the III Advanced Ceramics and Applications Conference written by William E. Lee and published by Springer. This book was released on 2015-11-11 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the Proceedings of III Advanced Ceramics and Applications conference, held in Belgrade, Serbia in 2014. It contains 25 papers on various subjects regarding preparation, characterization and application of advanced ceramic materials.

Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete

Author : Leandro F. M. Sanchez
Publisher : Springer Nature
ISBN 13 : 3031593499
Total Pages : 748 pages
Book Rating : 4.0/5 (315 download)

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

Download or read book Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete written by Leandro F. M. Sanchez and published by Springer Nature. This book was released on with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Alkali-Silica Reaction in Concrete

Author : R N Swamy
Publisher : CRC Press
ISBN 13 : 0203036638
Total Pages : 288 pages
Book Rating : 4.2/5 (3 download)

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Book Synopsis The Alkali-Silica Reaction in Concrete by : R N Swamy

Download or read book The Alkali-Silica Reaction in Concrete written by R N Swamy and published by CRC Press. This book was released on 1991-09-01 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges

Author : Nigel Powers
Publisher : CRC Press
ISBN 13 : 1351745972
Total Pages : 550 pages
Book Rating : 4.3/5 (517 download)

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Book Synopsis Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges by : Nigel Powers

Download or read book Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges written by Nigel Powers and published by CRC Press. This book was released on 2018-07-04 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges contains lectures and papers presented at the Ninth International Conference on Bridge Maintenance, Safety and Management (IABMAS 2018), held in Melbourne, Australia, 9-13 July 2018. This volume consists of a book of extended abstracts and a USB card containing the full papers of 393 contributions presented at IABMAS 2018, including the T.Y. Lin Lecture, 10 Keynote Lectures, and 382 technical papers from 40 countries. The contributions presented at IABMAS 2018 deal with the state of the art as well as emerging concepts and innovative applications related to the main aspects of bridge maintenance, safety, risk, management and life-cycle performance. Major topics include: new design methods, bridge codes, heavy vehicle and load models, bridge management systems, prediction of future traffic models, service life prediction, residual service life, sustainability and life-cycle assessments, maintenance strategies, bridge diagnostics, health monitoring, non-destructive testing, field testing, safety and serviceability, assessment and evaluation, damage identification, deterioration modelling, repair and retrofitting strategies, bridge reliability, fatigue and corrosion, extreme loads, advanced experimental simulations, and advanced computer simulations, among others. This volume provides both an up-to-date overview of the field of bridge engineering and significant contributions to the process of more rational decision-making on bridge maintenance, safety, risk, management and life-cycle performance of bridges for the purpose of enhancing the welfare of society. The Editors hope that these Proceedings will serve as a valuable reference to all concerned with bridge structure and infrastructure systems, including students, researchers and engineers from all areas of bridge engineering.

Concrete Mix Design, Quality Control and Specification, Fourth Edition

Author : Ken W. Day
Publisher : CRC Press
ISBN 13 : 0415504996
Total Pages : 352 pages
Book Rating : 4.4/5 (155 download)

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Book Synopsis Concrete Mix Design, Quality Control and Specification, Fourth Edition by : Ken W. Day

Download or read book Concrete Mix Design, Quality Control and Specification, Fourth Edition written by Ken W. Day and published by CRC Press. This book was released on 2013-11-11 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: The nature of concrete is rapidly changing, and with it, there are rising concerns. Thoroughly revised and updated, this fourth edition of Concrete Mix Design, Quality Control and Specification addresses current industry practices that provide inadequate durability and fail to eliminate problems with underperforming new concrete and defective testing. Many specifications now require additional criteria in an attempt to improve durability or other properties. This book discusses the trend towards adding performance requirements to existing prescriptive specifications. It also explores the matter of prescription versus performance specification and especially the specification of non-strength-related performance such as durability. What’s new in the Fourth Edition: Examines water-to-cement ratio as a declining criterion of quality and durability Discusses the diminishing availability of suitable natural sands and growing industry concerns regarding the environmental impact of their use Considers advances in concrete admixtures and their ever-increasing use Advocates reliability of testing as a vital feature of the shift from prescriptive to performance specifications Addresses cement replacement materials as they relate to greenhouse gas and sustainability Concrete Mix Design, Quality Control and Specification explores producing, designing, controlling, or specifying concrete, and addresses issues related with sustainability and the impact of new concrete materials such as ready mixed geopolymers, magnesium oxide, and calcium carbonate. The text is an ideal resource for concrete technologists, producers and specifiers, and contractors on large projects

Guide Specification for Concrete Subject to Alkali-silica Reactions

Author :
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Guide Specification for Concrete Subject to Alkali-silica Reactions by :

Download or read book Guide Specification for Concrete Subject to Alkali-silica Reactions written by and published by . This book was released on 1994 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete

Author : Leandro F.M. Sanchez
Publisher : Springer
ISBN 13 : 9783031594182
Total Pages : 0 pages
Book Rating : 4.5/5 (941 download)

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

Download or read book Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete written by Leandro F.M. Sanchez and published by Springer. This book was released on 2024-06-07 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.