Effect of Mineral Aggregates and Chemical Admixtures as Internal Curing Agents on the Mechanical Properties and Durability of High-Performance Concrete

Abstract: In the present work, the effect of mineral aggregates (pumice stone and expanded clay aggregates) and chemical admixtures (superplasticizers and shrinkage reducing additives) as an alternative internal curing technique was investigated, to improve the properties of highperformance concrete...

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Autores principales: Vázquez Rodríguez, Francisco Javier, Elizondo Villarreal, Nora, Verástegui Domínguez, Luz Hypatia, Arato Tovar, Ana María, López Perales, Jesús Fernando, Contreras de León, José Eulalio, Gómez Rodríguez, Cristian, Fernández González, Daniel, Verdeja, Luis Felipe, García Quiñonez, Linda Viviana, Rodríguez Castellanos, Edén Amaral
Formato: Artículo
Lenguaje:inglés
Publicado: Molecular Diversity Preservation International 2020
Materias:
Acceso en línea:http://eprints.uanl.mx/22397/1/2020-%20Materials.pdf
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author Vázquez Rodríguez, Francisco Javier
Elizondo Villarreal, Nora
Verástegui Domínguez, Luz Hypatia
Arato Tovar, Ana María
López Perales, Jesús Fernando
Contreras de León, José Eulalio
Gómez Rodríguez, Cristian
Fernández González, Daniel
Verdeja, Luis Felipe
García Quiñonez, Linda Viviana
Rodríguez Castellanos, Edén Amaral
author_facet Vázquez Rodríguez, Francisco Javier
Elizondo Villarreal, Nora
Verástegui Domínguez, Luz Hypatia
Arato Tovar, Ana María
López Perales, Jesús Fernando
Contreras de León, José Eulalio
Gómez Rodríguez, Cristian
Fernández González, Daniel
Verdeja, Luis Felipe
García Quiñonez, Linda Viviana
Rodríguez Castellanos, Edén Amaral
author_sort Vázquez Rodríguez, Francisco Javier
collection Repositorio Institucional
description Abstract: In the present work, the effect of mineral aggregates (pumice stone and expanded clay aggregates) and chemical admixtures (superplasticizers and shrinkage reducing additives) as an alternative internal curing technique was investigated, to improve the properties of highperformance concrete. In the fresh and hardened state, concretes with partial replacements of Portland cement (CPC30R and OPC40C) by pulverized fly ash in combination with the addition of mineral aggregates and chemical admixtures were studied. The physical, mechanical, and durability properties in terms of slump, density, porosity, compressive strength, and permeability to chloride ions were respectively determined. The microstructural analysis was carried out by scanning electronic microscopy. The results highlight the effect of the addition of expanded clay aggregate on the internal curing of the concrete, which allowed developing the maximum compressive strength at 28 days (61 MPa). Meanwhile, the replacement of fine aggregate by 20% of pumice stone allowed developing the maximum compressive strength (52 MPa) in an OPC-based concrete at 180 days. The effectiveness of internal curing to develop higher strength is attributed to control in the porosity and a high water release at a later age. Finally, the lowest permeability value at 90 days (945 C) was found by the substitutions of fine aggregate by 20% of pumice stone saturated with shrinkage reducing admixture into pores and OPC40C by 15% of pulverized fly ash. It might be due to impeded diffusion of chloride ions into cement paste in the vicinity of pulverized fly ash, where the pozzolanic reaction has occurred. The proposed internal curing technology can be considered a real alternative to achieve the expected performance of a high-performance concrete since a concrete with a compressive strength range from 45 to 67 MPa, density range from 2130 to 2310 kg/m3, and exceptional durability (< 2000 C) was effectively developed.
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spelling eprints-223972024-03-01T18:13:03Z http://eprints.uanl.mx/22397/ Effect of Mineral Aggregates and Chemical Admixtures as Internal Curing Agents on the Mechanical Properties and Durability of High-Performance Concrete Vázquez Rodríguez, Francisco Javier Elizondo Villarreal, Nora Verástegui Domínguez, Luz Hypatia Arato Tovar, Ana María López Perales, Jesús Fernando Contreras de León, José Eulalio Gómez Rodríguez, Cristian Fernández González, Daniel Verdeja, Luis Felipe García Quiñonez, Linda Viviana Rodríguez Castellanos, Edén Amaral TA Ingeniería General y Civil Abstract: In the present work, the effect of mineral aggregates (pumice stone and expanded clay aggregates) and chemical admixtures (superplasticizers and shrinkage reducing additives) as an alternative internal curing technique was investigated, to improve the properties of highperformance concrete. In the fresh and hardened state, concretes with partial replacements of Portland cement (CPC30R and OPC40C) by pulverized fly ash in combination with the addition of mineral aggregates and chemical admixtures were studied. The physical, mechanical, and durability properties in terms of slump, density, porosity, compressive strength, and permeability to chloride ions were respectively determined. The microstructural analysis was carried out by scanning electronic microscopy. The results highlight the effect of the addition of expanded clay aggregate on the internal curing of the concrete, which allowed developing the maximum compressive strength at 28 days (61 MPa). Meanwhile, the replacement of fine aggregate by 20% of pumice stone allowed developing the maximum compressive strength (52 MPa) in an OPC-based concrete at 180 days. The effectiveness of internal curing to develop higher strength is attributed to control in the porosity and a high water release at a later age. Finally, the lowest permeability value at 90 days (945 C) was found by the substitutions of fine aggregate by 20% of pumice stone saturated with shrinkage reducing admixture into pores and OPC40C by 15% of pulverized fly ash. It might be due to impeded diffusion of chloride ions into cement paste in the vicinity of pulverized fly ash, where the pozzolanic reaction has occurred. The proposed internal curing technology can be considered a real alternative to achieve the expected performance of a high-performance concrete since a concrete with a compressive strength range from 45 to 67 MPa, density range from 2130 to 2310 kg/m3, and exceptional durability (< 2000 C) was effectively developed. Molecular Diversity Preservation International 2020 Article PeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/22397/1/2020-%20Materials.pdf http://eprints.uanl.mx/22397/1.haspreviewThumbnailVersion/2020-%20Materials.pdf Vázquez Rodríguez, Francisco Javier y Elizondo Villarreal, Nora y Verástegui Domínguez, Luz Hypatia y Arato Tovar, Ana María y López Perales, Jesús Fernando y Contreras de León, José Eulalio y Gómez Rodríguez, Cristian y Fernández González, Daniel y Verdeja, Luis Felipe y García Quiñonez, Linda Viviana y Rodríguez Castellanos, Edén Amaral (2020) Effect of Mineral Aggregates and Chemical Admixtures as Internal Curing Agents on the Mechanical Properties and Durability of High-Performance Concrete. Materials, 13 (9). p. 2090. ISSN 1996-1944 http://doi.org/10.3390/ma13092090 doi:10.3390/ma13092090
spellingShingle TA Ingeniería General y Civil
Vázquez Rodríguez, Francisco Javier
Elizondo Villarreal, Nora
Verástegui Domínguez, Luz Hypatia
Arato Tovar, Ana María
López Perales, Jesús Fernando
Contreras de León, José Eulalio
Gómez Rodríguez, Cristian
Fernández González, Daniel
Verdeja, Luis Felipe
García Quiñonez, Linda Viviana
Rodríguez Castellanos, Edén Amaral
Effect of Mineral Aggregates and Chemical Admixtures as Internal Curing Agents on the Mechanical Properties and Durability of High-Performance Concrete
thumbnail https://rediab.uanl.mx/themes/sandal5/images/online.png
title Effect of Mineral Aggregates and Chemical Admixtures as Internal Curing Agents on the Mechanical Properties and Durability of High-Performance Concrete
title_full Effect of Mineral Aggregates and Chemical Admixtures as Internal Curing Agents on the Mechanical Properties and Durability of High-Performance Concrete
title_fullStr Effect of Mineral Aggregates and Chemical Admixtures as Internal Curing Agents on the Mechanical Properties and Durability of High-Performance Concrete
title_full_unstemmed Effect of Mineral Aggregates and Chemical Admixtures as Internal Curing Agents on the Mechanical Properties and Durability of High-Performance Concrete
title_short Effect of Mineral Aggregates and Chemical Admixtures as Internal Curing Agents on the Mechanical Properties and Durability of High-Performance Concrete
title_sort effect of mineral aggregates and chemical admixtures as internal curing agents on the mechanical properties and durability of high performance concrete
topic TA Ingeniería General y Civil
url http://eprints.uanl.mx/22397/1/2020-%20Materials.pdf
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