Accelerated and natural carbonation of concretes with internal curing and shrinkage/viscosity modifiers
Abstract In many parts of the world, corrosion of reinforcing steel in concrete induced by carbonation of the concrete continues to be a major durability concern. This paper investigates the accelerated and natural carbonation resistance of a set of seven concretes, specifically evaluating the effec...
| Autores principales: | , , , , , |
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| Formato: | Artículo |
| Lenguaje: | inglés |
| Publicado: |
2015
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| Materias: | |
| Acceso en línea: | http://eprints.uanl.mx/10115/1/Viscosity%20Modifiers.pdf |
| _version_ | 1824371196655828992 |
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| author | Durán Herrera, Alejandro Mendoza Rangel, José Manuel Santos Rodríguez, Edgar Ulises de los Vázquez, F. Valdez Tamez, Pedro Leobardo Bentz, Dale P. |
| author_facet | Durán Herrera, Alejandro Mendoza Rangel, José Manuel Santos Rodríguez, Edgar Ulises de los Vázquez, F. Valdez Tamez, Pedro Leobardo Bentz, Dale P. |
| author_sort | Durán Herrera, Alejandro |
| collection | Repositorio Institucional |
| description | Abstract In many parts of the world, corrosion of reinforcing steel in concrete induced by carbonation of the concrete continues to be a major durability concern. This paper investigates the accelerated and natural carbonation resistance of a set of seven concretes, specifically evaluating the effects of internal curing and/or shrinkage/viscosity modifiers on carbonation resistance. In addition to five different ordinary portland cement (OPC) concretes, two concretes containing 20 % of a Class F fly ash as replacement for cement on a mass basis are also evaluated. For all seven concrete mixtures, a good correlation between accelerated (lab) and natural (field) measured carbonation coefficients is observed. Conversely, there is less correlation observed between the specimens’ carbonation resistance and their respective 28 days compressive strengths, with the mixtures containing the shrinkage/viscosity modifier specifically exhibiting an anomalous behavior of higher carbonation resistance at lower strength levels. For both the accelerated and natural exposures, the lowest carbonation coefficients are obtained for two mixtures, one containing the shrinkage/viscosity modifier added in the mixing water and the other containing a solution of the same admixture used to pre-wet fine lightweight aggregate. Additionally, the fly ash mixtures exhibited a significantly higher carbonation coefficient in both exposures than their corresponding OPC concretes. |
| format | Article |
| id | eprints-10115 |
| institution | UANL |
| language | English |
| publishDate | 2015 |
| record_format | eprints |
| spelling | eprints-101152024-03-07T16:28:01Z http://eprints.uanl.mx/10115/ Accelerated and natural carbonation of concretes with internal curing and shrinkage/viscosity modifiers Durán Herrera, Alejandro Mendoza Rangel, José Manuel Santos Rodríguez, Edgar Ulises de los Vázquez, F. Valdez Tamez, Pedro Leobardo Bentz, Dale P. TA Ingeniería General y Civil TH Construcción de Edificios Abstract In many parts of the world, corrosion of reinforcing steel in concrete induced by carbonation of the concrete continues to be a major durability concern. This paper investigates the accelerated and natural carbonation resistance of a set of seven concretes, specifically evaluating the effects of internal curing and/or shrinkage/viscosity modifiers on carbonation resistance. In addition to five different ordinary portland cement (OPC) concretes, two concretes containing 20 % of a Class F fly ash as replacement for cement on a mass basis are also evaluated. For all seven concrete mixtures, a good correlation between accelerated (lab) and natural (field) measured carbonation coefficients is observed. Conversely, there is less correlation observed between the specimens’ carbonation resistance and their respective 28 days compressive strengths, with the mixtures containing the shrinkage/viscosity modifier specifically exhibiting an anomalous behavior of higher carbonation resistance at lower strength levels. For both the accelerated and natural exposures, the lowest carbonation coefficients are obtained for two mixtures, one containing the shrinkage/viscosity modifier added in the mixing water and the other containing a solution of the same admixture used to pre-wet fine lightweight aggregate. Additionally, the fly ash mixtures exhibited a significantly higher carbonation coefficient in both exposures than their corresponding OPC concretes. 2015 Article PeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/10115/1/Viscosity%20Modifiers.pdf http://eprints.uanl.mx/10115/1.haspreviewThumbnailVersion/Viscosity%20Modifiers.pdf Durán Herrera, Alejandro y Mendoza Rangel, José Manuel y Santos Rodríguez, Edgar Ulises de los y Vázquez, F. y Valdez Tamez, Pedro Leobardo y Bentz, Dale P. (2015) Accelerated and natural carbonation of concretes with internal curing and shrinkage/viscosity modifiers. Materials and structures, 48 (4). pp. 1207-1214. ISSN 1359-5997 http://dx.doi.org/10.1617/s11527-013-0226-y doi:10.1617/s11527-013-0226-y |
| spellingShingle | TA Ingeniería General y Civil TH Construcción de Edificios Durán Herrera, Alejandro Mendoza Rangel, José Manuel Santos Rodríguez, Edgar Ulises de los Vázquez, F. Valdez Tamez, Pedro Leobardo Bentz, Dale P. Accelerated and natural carbonation of concretes with internal curing and shrinkage/viscosity modifiers |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | Accelerated and natural carbonation of concretes with internal curing and shrinkage/viscosity modifiers |
| title_full | Accelerated and natural carbonation of concretes with internal curing and shrinkage/viscosity modifiers |
| title_fullStr | Accelerated and natural carbonation of concretes with internal curing and shrinkage/viscosity modifiers |
| title_full_unstemmed | Accelerated and natural carbonation of concretes with internal curing and shrinkage/viscosity modifiers |
| title_short | Accelerated and natural carbonation of concretes with internal curing and shrinkage/viscosity modifiers |
| title_sort | accelerated and natural carbonation of concretes with internal curing and shrinkage viscosity modifiers |
| topic | TA Ingeniería General y Civil TH Construcción de Edificios |
| url | http://eprints.uanl.mx/10115/1/Viscosity%20Modifiers.pdf |
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