alkaliaggregate reactions in concrete a review

Alkali-aggregate Reactions in Concrete - A review

Reactions in Concrete - A review - Benoit Fournier Fortaleza 2010. AAR one of many deleterious mechanisms affecting the durability of concrete (Mehta and Monteiro 1999) First report of AAR ... ↑ pH conditions alkali-aggregate reactions (Mehta and Monteiro 1999) (Diamond 1989)

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Alkali-aggregate reaction in concrete : a world review in ...

Summary. 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 ...

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Book Review - Alkali-Aggregate Reaction in Concrete: A ...

Alkali-Aggregate Reaction in Concrete: A World Review. Editors Sims I and Poole A, CRC Press 2017. ISBN: 978-1-138-02756-5 (Hardback) ISBN: 978-1-315-70895-9 (eBook) 768 pages. This book is essentially in two parts, or almost two books in one, with each chapter written by a different expert author or authors. The first part, Chapters 1-5, is a ...

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Review of Expansive Alkali-Aggregate Reactions in Concrete ...

Nov 01, 1995  Expansive alkali-aggregate reactions (AAR) are a frequent and worldwide cause of poor durability in Portland cement concrete. In plain concrete, deleterious AAR generally results in expansion and map-cracking, but in reinforced or prestressed concrete

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Alkali-Aggregate Reaction in Concrete: A World Review

Alkali-Aggregate Reaction in Concrete: A World Review Ian Sims, Alan Poole So-Called Alkali-Carbonate Reaction (ACR) ... Katayama (1992), based on literature reviews, predicted that ACR is a combined phenomenon of harmless dedolomitization and expansive ASR of cryptocrystalline

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ALKALI-AGGREGATE REACTION IN CONCRETE : A REVIEW OF

ALKALI-AGGREGATE REACTION IN CONCRETE : A REVIEW OF BASIC CONCEPTS AND ENGINEERING IMPLICATIONS. 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 mechanisms, conditions conducive to ...

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Alkali-Aggregate Reaction in Concrete: A World Review 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 ...

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ALKALI AGGREGATE REACTIONS (AAR) IN CONCRETE

Alkali-aggregate reaction (ASR) in concrete is one of the least dealt with concrete degradation mechanism in Finland. It is a common belief that it does not occur due to the exceptional quality of Finland’s granitic rock. However, over 50 cases have been identified

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Alkali Aggregate Reaction in Concrete - Types, Causes, and ...

Jul 16, 2019  🕑 Reading time: 1 minute Alkali aggregate reactions (AAR) occur when aggregates in concrete react with the alkali hydroxides in concrete producing a hygroscopic gel which, in the presence of moisture, absorbs water and causes expansion and cracking over a period of many years. This alkali-aggregate reaction has two forms, namely: Alkali-silica reaction (ASR) and []

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CONCRETE TECHNOLOGY Diagnosis and Control of Alkali ...

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. * Program Manager, Masonry and

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Alkali-aggregate reaction in concrete: a review of basic ...

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 mechanisms, conditions conducive to the development and the sustainability of AAR in concrete, field and laboratory investigation programs for evaluating the potential alkali-reactivity ...

get price

Review of Expansive Alkali-Aggregate Reactions in Concrete ...

Nov 01, 1995  Expansive alkali-aggregate reactions (AAR) are a frequent and worldwide cause of poor durability in Portland cement concrete. In plain concrete, deleterious AAR generally results in expansion and map-cracking, but in reinforced or prestressed concrete

get price

ALKALI-AGGREGATE REACTION IN CONCRETE : A REVIEW OF

ALKALI-AGGREGATE REACTION IN CONCRETE : A REVIEW OF BASIC CONCEPTS AND ENGINEERING IMPLICATIONS. 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 mechanisms, conditions conducive to ...

get price

Alkali-Aggregate Reaction in Concrete : A World Review ...

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 ...

get price

REVIEW OF EXPANSIVE ALKALI-AGGREGATE REACTIONS IN CONCRETE ...

Expansive alkali-aggregate reactions (AAR) occur frequently worldwide, causing durability failure in Portland cement concrete. Deleterious AAR generally result in expansion and map-cracking in plain concrete; however, in reinforced or prestressed concrete, cracks may display a

get price

Alkali-Aggregate Reaction in Concrete: A World Review 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 ...

get price

ALKALI AGGREGATE REACTIONS (AAR) IN CONCRETE

Alkali-aggregate reaction (ASR) in concrete is one of the least dealt with concrete degradation mechanism in Finland. It is a common belief that it does not occur due to the exceptional quality of Finland’s granitic rock. However, over 50 cases have been identified

get price

Alkali Aggregate Reaction Topic - Concrete

Alkali-aggregate reactions can be either alkali-carbonate reactions (ACRs) or alkali-silica reactions (ASRs). In ACR, the reaction is between the alkalies (sodium and potassium) and certain carbonate rocks, particularly calcitic dolomite and dolomitic limestones, present in some aggregates. In ASR, the reaction is between alkalies and certain siliceous rocks or minerals, such as opaline chert ...

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CONCRETE TECHNOLOGY Diagnosis and Control of Alkali ...

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. * Program Manager, Masonry and

get price

Test methods on the alkali carbonate reaction in concrete ...

Aug 01, 2017  The most common reaction of alkali aggregate reaction is alkali-silica reaction(ASR), but there is other kind of alkali aggregate reactions which has been recognized as being different from that of the more common and that is alkali-carbonate reaction(ACR) [1].

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Alkali-aggregate reaction in recycled aggregate concrete ...

May 10, 2020  This review article focuses on alkali-aggregate reaction (AAR) of RCA concrete and provides a comprehensive overview of the progress of this subject. The review includes comparison of AAR between RCA and OA concretes; the factors influencing the AAR in RCA concrete; the mitigation measures and the applicability of different test methods for ...

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Alkali-Aggregate Reaction (AAR) of Concrete Structures

M1: Restrict the alkalinity of pore solution, e.g. limit the alkali content of concrete, use of low alkali cement, include PFA, GGBS, etc. M2: Avoid the presence of a critical amount of reactive

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Alkali-Aggregate Reaction in Concrete: A World Review ...

Jul 17, 2017  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

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A Review on Alkali-Silica Reaction Evolution in Recycled ...

Jun 09, 2020  materials Review A Review on Alkali-Silica Reaction Evolution in Recycled Aggregate Concrete Miguel Barreto Santos 1, Jorge De Brito 2,* and António Santos Silva 3 1 School of Technology and Management, Polytechnic of Leiria, Campus 2—Morro do Lena—Alto do Vieiro, 2411-901 Leiria, Portugal; [email protected]

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Alkali-aggregate reaction in concrete: a review of basic ...

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 mechanisms, conditions conducive to the development and the sustainability of AAR in concrete, field and laboratory investigation programs for evaluating the potential alkali-reactivity ...

get price

ALKALI-AGGREGATE REACTION IN CONCRETE : A REVIEW OF

ALKALI-AGGREGATE REACTION IN CONCRETE : A REVIEW OF BASIC CONCEPTS AND ENGINEERING IMPLICATIONS. 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 mechanisms, conditions conducive to ...

get price

Alkali-Aggregate Reaction in Concrete : A World Review ...

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 ...

get price

Progress in the Evaluation of Alkali-Aggregate Reaction in ...

This chapter has a twofold focus: (1) to review current research on the evaluation of alkali-aggregate reaction (AAR) in concrete structures from Alaska to Oregon (the “Pacific Northwest”), and (2) to assess AAR test data for aggregates throughout this region. I briefly appraise the problems and

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REVIEW OF EXPANSIVE ALKALI-AGGREGATE REACTIONS IN CONCRETE ...

Expansive alkali-aggregate reactions (AAR) occur frequently worldwide, causing durability failure in Portland cement concrete. Deleterious AAR generally result in expansion and map-cracking in plain concrete; however, in reinforced or prestressed concrete, cracks may display a

get price

A Review on Alkali-Silica Reaction Evolution in Recycled ...

Jun 09, 2020  materials Review A Review on Alkali-Silica Reaction Evolution in Recycled Aggregate Concrete Miguel Barreto Santos 1, Jorge De Brito 2,* and António Santos Silva 3 1 School of Technology and Management, Polytechnic of Leiria, Campus 2—Morro do Lena—Alto do Vieiro, 2411-901 Leiria, Portugal; [email protected]

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Analysis of concrete structures deteriorated by alkali ...

Nov 11, 2016  This research aims to analyze the alkali-aggregate reaction with the case study of a waterfront structure pier, a reinforced concrete structure located in a marine environment in Brazil. In the present work is done a literature review on the subject of alkali-aggregate reaction, focusing on Brazilian standards, addressing the chemical mechanism, risk analysis and prevention of this ...

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CONCRETE TECHNOLOGY Diagnosis and Control of Alkali ...

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. * Program Manager, Masonry and

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Aggregate Reaction - an overview ScienceDirect Topics

Mark G Alexander, in Developments in the Formulation and Reinforcement of Concrete (Second Edition), 2019. 4.1 Introduction. Alkali– aggregate reaction (AAR) 1 is a chemical reaction between alkalis in the concrete and reactive components of the aggregates. It was first observed in the United States in the 1920s and initially researched by Stanton in 1940. AAR is a type of internal chemical ...

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Test methods on the alkali carbonate reaction in concrete ...

Aug 01, 2017  The most common reaction of alkali aggregate reaction is alkali-silica reaction(ASR), but there is other kind of alkali aggregate reactions which has been recognized as being different from that of the more common and that is alkali-carbonate reaction(ACR) [1].

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A review on alkali-aggregate reactions in alkali-activated ...

Jan 06, 2015  Nevertheless, Bakharev et al. reported that alkali-activated slag concrete had lower resistance to alkali-aggregate attack than that of OPC concrete of similar grade. In light of the significance and discrepancies of the existing studies, this paper presents a critical review on factors influencing AAR in alkali-activated materials.

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Alkali–silica reaction - Wikipedia

The alkali–silica reaction (ASR), more commonly known as "concrete cancer", is a deleterious swelling reaction that occurs over time in concrete between the highly alkaline cement paste and the reactive amorphous (i.e., non-crystalline) silica found in many common aggregates, given sufficient moisture.. This deleterious chemical reaction causes the expansion of the altered aggregate by the ...

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Alkali-Aggregate Reaction in Concrete: A World Review by ...

Available in: Paperback. 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...

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ALKALI-AGGREGATE REACTION IN SOUTH AFRICA - A

Apr 05, 2021  However, concrete completely immersed in either fresh or sea water does not deteriorate because of the alkali­ aggregate reaction; this observation has been verified in laboratory experiments with concrete prisms. The rest of this paper reviews the current status of the subject in South Africa. In August 1980 a special meeting ofthe Technical ...

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