Abstract
Predictive mathematical models have been proposed in alkali-silica reaction (ASR). Predicting concrete degradation and its effects on mechanical properties is of interest given the long time until degradation becomes critical for intervention and recovery, and difficult structural access for predictive and corrective monitoring and treatment. The present paper presents a general overview of the evolution of the aforementioned predictive mathematical models, interrelating them to the maturation of the phenomenological state of the art associated with ASR. For this purpose, a systematic literature review was used, followed by bibliometric analysis and meta-analysis. In this study, 104 articles from 1974 to 2020 were selected, of which 31 articles were reviewed on the topic of mathematical modeling of ASR. The results of the method indicated the importance of the methodological approach of literature review to provide a comprehensive and chronological view of the evolution of ASR consolidated in the literature. It was found that the mathematical models have evolved considering the phenomenological approach of ASR.
Highlights
Eighty years have passed since the first pathological manifestation of alkali-aggregate reaction (AAR) was documented
This study reviewed the literature on mathematical models of alkali-silica reaction (ASR) to fulfill the following objectives: a) temporal monitoring of the number of scientific publications in this field; b) literature review to deal with phenomenological aspects and correlate them with mathematical models
To cross-reference existing chemical and mechanical models in order to obtain a better refinement in possible chemicalmechanical models. It highlights the relevance of the methodological approach of the literature review to provide a comprehensive and chronological perspective of the evolution of ASR consolidated in the literature, which showed the evolution of studies on ASR, from research focusing on the impact caused by gel expansion, to understanding of the chemical reaction in concrete
Summary
Eighty years have passed since the first pathological manifestation of alkali-aggregate reaction (AAR) was documented. AAR can occur in three different forms, which are each associated with the type of composite mineral in the reactive aggregate. They are classified as alkali-silicate reaction (ASR), alkali-silica reaction (ASR), and alkali-aggregate reaction (ACR). For the reaction to occur, the siloxane bond is broken by the hydroxyl, and the hydroxyl transforms the siloxane bond into a silanol bond. This reaction forms the hygroscopic alkalisilicone gel, which in presence of moisture expands, and causes stresses in the cement matrix, causing cracking and displacement of the concrete structure
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