Overall assessment of CFRP-wrapped concrete affected by alkali-silica reaction

Zahedi, Andisheh; Souza, Diego Jesus de; Zubaida, Nusrat; Sanchez, Leandro

doi:10.1016/j.cemconres.2023.107165

Cited by 7 publications

(2 citation statements)

References 39 publications

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“…When analyzing the graphs in Figure 4, a decreasing trend for the mechanical properties of all the concrete families as a function of ASR-induced development is clearly observed. This is in accordance with the observations made by various authors (e.g., [6,61,65,66]), in which the greater the development of an ASR, the greater the mechanical property loss. As such, according to the research, concrete affected by ASRs experiences a considerable decrease in tensile strength (as low as 65%) and modulus of elasticity (as low as 50%) at low to moderate levels of expansion (between 0.05% to 0.12%) [6].…”

Section: • Mechanical Property Lossessupporting

confidence: 93%

The Impact of Distinct Superplasticizers on the Degradation of Concrete Affected by Alkali-Silica Reaction (ASR)

et al. 2023

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The effect of two superplasticizers (SPs) with various equivalent (eq.) alkali contents (i.e., with 0.00009% and 4.1% of Na2Oeq, respectively) on the development of an alkali-silica reaction (ASR) was investigated through the use of multilevel assessment. This testing protocol showed promising results for evaluating concrete damage due to ASRs based on mechanical and microscopical testing protocols, specifically the stiffness damage test (SDT) and the damage rating index (DRI). Concrete specimens that incorporated the aforementioned SPs and distinct reactive aggregates (coarse and fine) were manufactured and then stored in conditions that enabled ASR development and were monitored over time. Upon reaching the desired expansion levels of this study, the concrete specimens were prepared for the multilevel assessment. The results show that the SP-incorporated concrete specimens with lower and higher alkali content yielded lower and higher deterioration results, respectively. This clearly confirms that while SP-incorporated concrete that contains SPs with a higher alkali content could increase the risk of ASR deterioration, those SPs with a very low amount of alkali content could act as a mitigation strategy against ASRs. Finally, an investigation into the influence of distinct SPs on the chemical composition of an ASR gel was conducted, which confirmed that the SP with a higher alkali content had the highest potential for further deterioration.

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Section: • Mechanical Property Lossessupporting

confidence: 93%

The Impact of Distinct Superplasticizers on the Degradation of Concrete Affected by Alkali-Silica Reaction (ASR)

et al. 2023

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“…Both reaction types generate secondary products that induce swelling forces internally to the reacting aggregate material(s) and further cement paste while moisture uptake [1][2][3][4]. AARinduced deterioration leads to microcracking, and loss of the material's integrity and functionality of the affected structure [1][2][3][4], significantly impacting the stiffness, tensile and shear strength of affected concrete, whereas less significant compressive strength reductions are observed [5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Efficiency of Scms to Avoid or Mitigate Asr-Induced Expansion and Deterioration Through a Multi-Level Assessment

Souza

Sanchez

2023

Preprint

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Evaluating the efficiency of SCMs to avoid or mitigate ASR-induced expansion and deterioration through a multi-level assessment

Souza

Sanchez

2023

Cement and Concrete Research

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Overall assessment of CFRP-wrapped concrete affected by alkali-silica reaction

Cited by 7 publications

References 39 publications

The Impact of Distinct Superplasticizers on the Degradation of Concrete Affected by Alkali-Silica Reaction (ASR)

The Impact of Distinct Superplasticizers on the Degradation of Concrete Affected by Alkali-Silica Reaction (ASR)

Evaluating the Efficiency of Scms to Avoid or Mitigate Asr-Induced Expansion and Deterioration Through a Multi-Level Assessment

Evaluating the efficiency of SCMs to avoid or mitigate ASR-induced expansion and deterioration through a multi-level assessment

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