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Conference object . 2015 . Peer-reviewed
License: CC BY NC ND
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Recolector de Ciencia Abierta, RECOLECTA
Conference object . 2015 . Peer-reviewed
License: CC BY NC ND
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Estudio físico, químico y microestructural de geopolímeros base ceniza volante

Authors: Rosas Casarez,, Carlos Antonio; Arredondo Rea, Susana Paola; Corral Higuera, Ramón; Almaral Sánchez, Jorge Luis; Gómez Soberón, José Manuel Vicente; Medina Serna, T. D. J.; Gálvez López, M. F.;

Estudio físico, químico y microestructural de geopolímeros base ceniza volante

Abstract

En este trabajo se analizó el comportamiento físico, químico y microestructural de la ceniza volante activada alcalinamente. Para ello fueron utilizados diferentes tamaños de partícula de ceniza volante (CV), obtenidos por molienda manual, mezcladas con NaOH y curadas durante 7, 14 y 28 días. Las técnicas de caracterización utilizadas fueron: TGA, FTIR, MEB, adsorción física de gases y pruebas de resistencia a compresión, además del software NIVision Assistant. Los resultados muestran que la disminución de tamaño de partículas, favoreció la geopolimerización del gel N-A-S-H y mejoró las propiedades cementantes en los geopolímeros, logrando resistencias a compresión hasta de 23 MPa, por otro lado, se indica mediante análisis de imagen, que los porcentajes de porosidad en cada uno de los morteros evaluados disminuyen conforme se alejan de la zona de transición interfacial (ZTI), los cuales se corroboran con los resultados de porosimetría. (ANGLÈS) In this paper was analyzed the physical, chemical and microstructural behavior of alkali activated fly ash. This comparison was used with different particle sizes of fly ash (CV), obtained by manual milling, mixed with NaOH and cured for 7, 14 and 28 days. The characterization techniques used: TGA, FTIR, SEM, physical adsorption of gases and compressive strength tests, as well NIVision Assistant software. The results show that decreasing particle size favored NASH gel Geopolymerization and improved cementitious properties in geopolymer, achieving compressive strengths up to 23 MPa. On the other hand, indicated by image analysis, the percentages of porosity in each of the mortars evaluated decrease as they move away from the interfacial transition zone (ZTI), these results are corroborated by porosimetry method.

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Spain
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Keywords

microestructural, porosidad, Materials de construcció, zti., Building materials, geopolimerización, Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers, :Enginyeria dels materials::Materials plàstics i polímers [Àrees temàtiques de la UPC], :Edificació::Materials de construcció [Àrees temàtiques de la UPC], Àrees temàtiques de la UPC::Edificació::Materials de construcció

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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