Influence of Brazilian fly ash fineness on the cementing efficiency factor, compressive strength and Young's modulus of concrete
This work investigates the cementing efficiency, determined by the k-value, of a Brazilian fly ash. The analyzed variables are the fly ash fineness and content, the water content in the mixtures and age of concrete. Further, the influence of the fineness of fly ash on the Young's modulus was al...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-04-01
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| Series: | Developments in the Built Environment |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666165923000297 |
| _version_ | 1827941622308929536 |
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| author | Margareth da Silva Magalhães Bruna Figueiredo Cezar Pedro Rodrigues Lustosa |
| author_facet | Margareth da Silva Magalhães Bruna Figueiredo Cezar Pedro Rodrigues Lustosa |
| author_sort | Margareth da Silva Magalhães |
| collection | DOAJ |
| description | This work investigates the cementing efficiency, determined by the k-value, of a Brazilian fly ash. The analyzed variables are the fly ash fineness and content, the water content in the mixtures and age of concrete. Further, the influence of the fineness of fly ash on the Young's modulus was also investigated. The results indicate that the k-values evaluated for Brazilian fly ash are higher than the one recommended by European standard for concrete, EN 206. Furthermore, k-value depends on fly ash content and decrease when the content in the mixture is raised. Water/binder ratio and hydration time significantly influence the k-value, too. The results also indicate an improvement of k-value and relationship between compressive strength, Young's modulus and the fly ash amount in the mixture with an increase in fly ash fineness. New relationships between compressive strength and water/effective cementitious materials ratio, considering the k-values, are proposed for fly ash-concretes. |
| first_indexed | 2024-03-13T09:40:27Z |
| format | Article |
| id | doaj.art-641e09cabe114f0ab13d75fc57dbf471 |
| institution | Directory Open Access Journal |
| issn | 2666-1659 |
| language | English |
| last_indexed | 2024-03-13T09:40:27Z |
| publishDate | 2023-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Developments in the Built Environment |
| spelling | doaj.art-641e09cabe114f0ab13d75fc57dbf4712023-05-25T04:25:12ZengElsevierDevelopments in the Built Environment2666-16592023-04-0114100147Influence of Brazilian fly ash fineness on the cementing efficiency factor, compressive strength and Young's modulus of concreteMargareth da Silva Magalhães0Bruna Figueiredo Cezar1Pedro Rodrigues Lustosa2Corresponding author.; Post-Graduate Program in Civil Engineering, State University of Rio de Janeiro, Rua São Francisco Xavier, 524, CEP 20550 - 900, Rio de Janeiro, RJ, BrazilPost-Graduate Program in Civil Engineering, State University of Rio de Janeiro, Rua São Francisco Xavier, 524, CEP 20550 - 900, Rio de Janeiro, RJ, BrazilPost-Graduate Program in Civil Engineering, State University of Rio de Janeiro, Rua São Francisco Xavier, 524, CEP 20550 - 900, Rio de Janeiro, RJ, BrazilThis work investigates the cementing efficiency, determined by the k-value, of a Brazilian fly ash. The analyzed variables are the fly ash fineness and content, the water content in the mixtures and age of concrete. Further, the influence of the fineness of fly ash on the Young's modulus was also investigated. The results indicate that the k-values evaluated for Brazilian fly ash are higher than the one recommended by European standard for concrete, EN 206. Furthermore, k-value depends on fly ash content and decrease when the content in the mixture is raised. Water/binder ratio and hydration time significantly influence the k-value, too. The results also indicate an improvement of k-value and relationship between compressive strength, Young's modulus and the fly ash amount in the mixture with an increase in fly ash fineness. New relationships between compressive strength and water/effective cementitious materials ratio, considering the k-values, are proposed for fly ash-concretes.http://www.sciencedirect.com/science/article/pii/S2666165923000297Cementing efficiencyk-valueFly ashFinenessCompressive strengthYoung's modulus |
| spellingShingle | Margareth da Silva Magalhães Bruna Figueiredo Cezar Pedro Rodrigues Lustosa Influence of Brazilian fly ash fineness on the cementing efficiency factor, compressive strength and Young's modulus of concrete Developments in the Built Environment Cementing efficiency k-value Fly ash Fineness Compressive strength Young's modulus |
| title | Influence of Brazilian fly ash fineness on the cementing efficiency factor, compressive strength and Young's modulus of concrete |
| title_full | Influence of Brazilian fly ash fineness on the cementing efficiency factor, compressive strength and Young's modulus of concrete |
| title_fullStr | Influence of Brazilian fly ash fineness on the cementing efficiency factor, compressive strength and Young's modulus of concrete |
| title_full_unstemmed | Influence of Brazilian fly ash fineness on the cementing efficiency factor, compressive strength and Young's modulus of concrete |
| title_short | Influence of Brazilian fly ash fineness on the cementing efficiency factor, compressive strength and Young's modulus of concrete |
| title_sort | influence of brazilian fly ash fineness on the cementing efficiency factor compressive strength and young s modulus of concrete |
| topic | Cementing efficiency k-value Fly ash Fineness Compressive strength Young's modulus |
| url | http://www.sciencedirect.com/science/article/pii/S2666165923000297 |
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