Effects of air content on rheological behavior and segregation of self-compacting concrete
Self-compacting concrete (SCC) offers significant advantages due to its low yield stress and plastic viscosity, yet challenges such as bleeding and segregation can compromise its stability. Maintaining a uniform aggregate distribution is essential to prevent these issues. Air-entraining admixtures (...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Hybrid Advances |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2773207X24001982 |
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| author | Ferdaous Aghziel Sadfa Mouhcine Ben Aicha Olivier Jalbaud Mounir Zaher Adil Hafidi Alaoui Yves Burtschell |
| author_facet | Ferdaous Aghziel Sadfa Mouhcine Ben Aicha Olivier Jalbaud Mounir Zaher Adil Hafidi Alaoui Yves Burtschell |
| author_sort | Ferdaous Aghziel Sadfa |
| collection | DOAJ |
| description | Self-compacting concrete (SCC) offers significant advantages due to its low yield stress and plastic viscosity, yet challenges such as bleeding and segregation can compromise its stability. Maintaining a uniform aggregate distribution is essential to prevent these issues. Air-entraining admixtures (AEA) are often used to introduce air bubbles that enhance SCC's resilience in freeze-thaw conditions and potentially improve stability. This study addresses contradictions in prior research regarding the impact of entrained air on SCC's rheological behavior, experimentally evaluates the effects of varying air content on SCC's workability and segregation resistance, and establishes correlations between rheological characteristics and segregation stability. A comprehensive series of rheological tests, including slump flow diameter, flow time, blocking rate, segregation stability, plastic viscosity, yield stress, and segregation index, was conducted on SCC mixes with different AEA dosages. Regression models revealed significant correlations between air content and both the stability and workability of SCC, with results indicating that optimal AEA levels improve flowability and reduce segregation risks. These findings provide valuable insights into designing stable, high-performance SCC formulations tailored for challenging structural applications. |
| format | Article |
| id | doaj-art-4357c885a7f944c78fb8d03d97b6867d |
| institution | DOAJ |
| issn | 2773-207X |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Hybrid Advances |
| spelling | doaj-art-4357c885a7f944c78fb8d03d97b6867d2025-08-20T02:49:59ZengElsevierHybrid Advances2773-207X2024-12-01710033710.1016/j.hybadv.2024.100337Effects of air content on rheological behavior and segregation of self-compacting concreteFerdaous Aghziel Sadfa0Mouhcine Ben Aicha1Olivier Jalbaud2Mounir Zaher3Adil Hafidi Alaoui4Yves Burtschell5Mechanics and civil engineering laboratory, FSTT, Abdelmalek Essaadi University, Tangier, MoroccoStructure and Materials laboratory, National School of Architecture, Rabat, Morocco; Corresponding author.Structure IUSTI UMR 7343 Laboratory, Polytech Marseille, AMU, FranceStructure IUSTI UMR 7343 Laboratory, Polytech Marseille, AMU, FranceMechanics and civil engineering laboratory, FSTT, Abdelmalek Essaadi University, Tangier, MoroccoStructure and Materials laboratory, National School of Architecture, Rabat, MoroccoSelf-compacting concrete (SCC) offers significant advantages due to its low yield stress and plastic viscosity, yet challenges such as bleeding and segregation can compromise its stability. Maintaining a uniform aggregate distribution is essential to prevent these issues. Air-entraining admixtures (AEA) are often used to introduce air bubbles that enhance SCC's resilience in freeze-thaw conditions and potentially improve stability. This study addresses contradictions in prior research regarding the impact of entrained air on SCC's rheological behavior, experimentally evaluates the effects of varying air content on SCC's workability and segregation resistance, and establishes correlations between rheological characteristics and segregation stability. A comprehensive series of rheological tests, including slump flow diameter, flow time, blocking rate, segregation stability, plastic viscosity, yield stress, and segregation index, was conducted on SCC mixes with different AEA dosages. Regression models revealed significant correlations between air content and both the stability and workability of SCC, with results indicating that optimal AEA levels improve flowability and reduce segregation risks. These findings provide valuable insights into designing stable, high-performance SCC formulations tailored for challenging structural applications.http://www.sciencedirect.com/science/article/pii/S2773207X24001982Self-compacting concreteAir-entraining admixturesRheological behaviorSegregationRegression models |
| spellingShingle | Ferdaous Aghziel Sadfa Mouhcine Ben Aicha Olivier Jalbaud Mounir Zaher Adil Hafidi Alaoui Yves Burtschell Effects of air content on rheological behavior and segregation of self-compacting concrete Hybrid Advances Self-compacting concrete Air-entraining admixtures Rheological behavior Segregation Regression models |
| title | Effects of air content on rheological behavior and segregation of self-compacting concrete |
| title_full | Effects of air content on rheological behavior and segregation of self-compacting concrete |
| title_fullStr | Effects of air content on rheological behavior and segregation of self-compacting concrete |
| title_full_unstemmed | Effects of air content on rheological behavior and segregation of self-compacting concrete |
| title_short | Effects of air content on rheological behavior and segregation of self-compacting concrete |
| title_sort | effects of air content on rheological behavior and segregation of self compacting concrete |
| topic | Self-compacting concrete Air-entraining admixtures Rheological behavior Segregation Regression models |
| url | http://www.sciencedirect.com/science/article/pii/S2773207X24001982 |
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