The ASR mechanism in concrete and the influence of lithium in mitigating it: A critical review

Venkatachalam, S.; Raja, K.; Vishnuvardhan, K.; Suchithra, S.; Maniarasan, S.K.; Saravanan, Manoharan; Miruna, M.; Prabanjan, S.

doi:10.1016/j.matpr.2022.07.327

Cited by 2 publications

(3 citation statements)

References 45 publications

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“…Unfortunately, there is currently no known technique to completely prevent the reaction once all the required conditions are met. Nevertheless, supplementary cementitious materials (SCMs) [ 4 , 5 , 6 , 7 ] and lithium compounds [ 8 , 9 , 10 , 11 ] have often been incorporated into new concrete structures to slow down the reaction. However, due to the reported shortages in the supply of SCMs like fly ash [ 12 ] and the cost of using available admixtures [ 9 ], there is an urgent need to explore additional SCMs or admixtures that could be used [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Alkali–Silica Reactions: Literature Review on the Influence of Moisture and Temperature and the Knowledge Gap

Olajide,

Nokken,

Sanchez

2023

Materials

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The alkali–silica reaction is a universally known destructive mechanism in concrete that can lead to the premature loss of serviceability in affected structures. Quite an enormous number of research studies have been carried out focusing on the mechanisms involved as well as the mitigation and prevention of the reaction. A few in-depth discussions on the role of moisture and temperature exist in the literature. Nevertheless, moisture and temperature have been confirmed to play a vital role in the reaction. However, critical assessments of their influence on ASR-induced damage are limited. The available moisture in concrete needed to initiate and sustain the reaction has been predominantly quantified with the relative humidity as a result of difficulties in the use of other media, like the degree of capillary saturation, which is more scientific. This paper discussed the current state of understanding of moisture measurement in concrete, the role of moisture and temperature in the kinetics of the reaction, as well as the moisture threshold needed for the reaction. Furthermore, the influence of these exposure conditions on the internal damage caused by ASR-induced deterioration was discussed.

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Section: Introductionmentioning

confidence: 99%

Alkali–Silica Reactions: Literature Review on the Influence of Moisture and Temperature and the Knowledge Gap

Olajide,

Nokken,

Sanchez

2023

Materials

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“…Alkali-silica reaction (ASR) causes significant and detrimental problems influencing the durability of cement-based materials. ASR generally occurs when alkali cations (Na+ and K+) in the pore solution discharge hydroxyl ions (OH-) [1]. They interact with the silanol groups present in the silicate phases of the aggregates [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…ASR generally occurs when alkali cations (Na+ and K+) in the pore solution discharge hydroxyl ions (OH-) [1]. They interact with the silanol groups present in the silicate phases of the aggregates [1,2]. At the end of this reaction, an alkali-silica gel product is obtained, which transforms from crypto-crystalline to amorphous structure [3].…”

Section: Introductionmentioning

confidence: 99%

Conditions for the Formation of Alkali-Silica Reaction in Hot Mix Asphalt

Demirtürk

2023

Materials Engineering Research

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Alkali-Silica Reaction (ASR) is the well-known durability problem of concrete during its service life. There are many studies on the formation, significance, diagnosis, and prevention of ASR in concrete. Although ASR in concrete is the subject of many studies, there are very few studies on ASR formation in Hot Mix Asphalt (HMA). This is because the high alkali content in the pore solution of concrete, which is one of the main components of ASR, cannot exist in HMA. The conditions required for ASR formation in HMA are also unknown. Recently, a limited number of studies have focused on the use of de-icers and recycled concrete aggregates to investigate the formation of ASR in HMA. The formation of ASR in HMA should be considered as an attractive research topic and raise the question of which conditions lead or will lead to the formation of ASR. Indeed, the main purpose of this study is to investigate the conditions that may cause ASR in HMA, as opposed to the assumption that ASR in HMA cannot be fully observed. The study favours the method of reviewing existing studies and creating a combination of possible conditions for the formation of ASR in HMA.

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The ASR mechanism in concrete and the influence of lithium in mitigating it: A critical review

Cited by 2 publications

References 45 publications

Alkali–Silica Reactions: Literature Review on the Influence of Moisture and Temperature and the Knowledge Gap

Alkali–Silica Reactions: Literature Review on the Influence of Moisture and Temperature and the Knowledge Gap

Conditions for the Formation of Alkali-Silica Reaction in Hot Mix Asphalt

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