Mechanical physical study of concrete substitutes with silica powder exposed in simulated aggressive environment
The present research resulted in a standardized laboratory test for the evaluation of physical and mechanical properties in a simulated exposure environment by immersion in 3% NaCl solution. The physical and mechanical evaluation was performed on reinforced cylindrical specimens of 30 cm high and 15...
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Universidad Centroccidental Lisandro Alvarado - Decanato de Ingeniería Civil
2018
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oai:ojs2.revistas.uclave.org:article-11472018-11-23T20:29:40Z Mechanical physical study of concrete substitutes with silica powder exposed in simulated aggressive environment Estudio físico mecánico de concretos sustituidos con polvo de sílice expuestos en ambiente agresivo simulado Giménez, Alejandro Olavarrieta, María Alice Silva, Luisana Gallegos, Hernán ambiente agresivo concreto sustituido polvo de sílice porosidad resistencia a la compresión aggressive environment substituted concrete silica powder porosity compression resistance The present research resulted in a standardized laboratory test for the evaluation of physical and mechanical properties in a simulated exposure environment by immersion in 3% NaCl solution. The physical and mechanical evaluation was performed on reinforced cylindrical specimens of 30 cm high and 15 cm in diameter, made of concrete with partial replacement of the cement by dose silica in 10% and 15% water cement ratio of 0,45 and 0,65 and design strength of 250 Kgf/cm². Settlement tests, porosity, capillary absorption and mechanical resistance were performed In a period of 5 months, the influence of the substitutions of silica dust in the concrete mixtures with respect to the standard mixtures was analyzed, obtaining an increase in the mechanical resistance with respect to the design, in the ratio a/c 0,45, for the a/c ratio 0,65 reached acceptable values for the substituted mixtures with respect to the mechanical strength compared with the design, as for the porosity and capillary absorption tests were not satisfactory for any relation to a/c probably due to lack of curing prior to exposure El presente trabajo de investigación tuvo como propósito ensayar probetas cilíndricas normalizadas, para evaluar sus propiedades físicas y mecánicas en un ambiente de exposición simulado por inmersión en solución de NaCl al 3%. Se realizó la evaluación física y mecánica en probetas cilíndricas armadas de 30 cm de alto y 15 cm de diámetro, de concretos elaborados con sustitución parcial del cemento por dosis sílice en 10% y 15% relaciones agua cemento de 0,45 y 0,65 y resistencia de diseño de 250 Kgf/cm². En un período de 5 meses se analizó la influencia de las sustituciones de polvo sílice en las mezclas de concreto con respecto a las mezclas patrón, obteniendo un aumento en la resistencia mecánica con respecto a la de diseño, en la relación a/c 0,45, para la relación a/c 0,65 alcanzó valores aceptables en cuanto a las mezclas sustituidas con respecto a la resistencia mecánica comparada con la de diseño, en cuanto a los ensayos de porosidad y absorción capilar no fueron satisfactorios para ninguna relación a/c probablemente por la falta de curado previo a la exposición Universidad Centroccidental Lisandro Alvarado - Decanato de Ingeniería Civil 2018-07-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo científico de investigación original application/pdf https://revistas.uclave.org/index.php/gt/article/view/1147 10.13140/RG.2.2.11020.62086 Gaceta Técnica; Vol. 19 No. 2 (2018): July-December; 37-50 Gaceta Técnica; Vol. 19 Núm. 2 (2018): Julio-Diciembre; 37-50 Gaceta Técnica; v. 19 n. 2 (2018): July-December; 37-50 2477-9539 spa https://revistas.uclave.org/index.php/gt/article/view/1147/472 https://revistas.uclave.org/index.php/gt/article/view/1147/1380 https://revistas.uclave.org/index.php/gt/article/view/1147/1381 |
| institution |
Universidad Centroccidental Lisandro Alvarado |
| collection |
OJS |
| language |
spa |
| format |
Online |
| author |
Giménez, Alejandro Olavarrieta, María Alice Silva, Luisana Gallegos, Hernán |
| spellingShingle |
Giménez, Alejandro Olavarrieta, María Alice Silva, Luisana Gallegos, Hernán Mechanical physical study of concrete substitutes with silica powder exposed in simulated aggressive environment |
| author_facet |
Giménez, Alejandro Olavarrieta, María Alice Silva, Luisana Gallegos, Hernán |
| author_sort |
Giménez, Alejandro |
| title |
Mechanical physical study of concrete substitutes with silica powder exposed in simulated aggressive environment |
| title_short |
Mechanical physical study of concrete substitutes with silica powder exposed in simulated aggressive environment |
| title_full |
Mechanical physical study of concrete substitutes with silica powder exposed in simulated aggressive environment |
| title_fullStr |
Mechanical physical study of concrete substitutes with silica powder exposed in simulated aggressive environment |
| title_full_unstemmed |
Mechanical physical study of concrete substitutes with silica powder exposed in simulated aggressive environment |
| title_sort |
mechanical physical study of concrete substitutes with silica powder exposed in simulated aggressive environment |
| description |
The present research resulted in a standardized laboratory test for the evaluation of physical and mechanical properties in a simulated exposure environment by immersion in 3% NaCl solution. The physical and mechanical evaluation was performed on reinforced cylindrical specimens of 30 cm high and 15 cm in diameter, made of concrete with partial replacement of the cement by dose silica in 10% and 15% water cement ratio of 0,45 and 0,65 and design strength of 250 Kgf/cm². Settlement tests, porosity, capillary absorption and mechanical resistance were performed In a period of 5 months, the influence of the substitutions of silica dust in the concrete mixtures with respect to the standard mixtures was analyzed, obtaining an increase in the mechanical resistance with respect to the design, in the ratio a/c 0,45, for the a/c ratio 0,65 reached acceptable values for the substituted mixtures with respect to the mechanical strength compared with the design, as for the porosity and capillary absorption tests were not satisfactory for any relation to a/c probably due to lack of curing prior to exposure |
| publisher |
Universidad Centroccidental Lisandro Alvarado - Decanato de Ingeniería Civil |
| publishDate |
2018 |
| url |
https://revistas.uclave.org/index.php/gt/article/view/1147 |
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