dc.contributorMazer, Wellington
dc.contributorhttps://orcid.org/0000-0002-9941-999X
dc.contributorhttp://lattes.cnpq.br/4548225471488796
dc.contributorLima, Adauto José Miranda de
dc.contributorhttps://orcid.org/0000-0001-6921-6609
dc.contributorhttp://lattes.cnpq.br/8681679368729264
dc.contributorCosta, Eliane Betânia Carvalho
dc.contributorhttps://orcid.org/0000-0002-3692-3806
dc.contributorhttp://lattes.cnpq.br/7980270951199108
dc.contributorMazer, Wellington
dc.contributorhttps://orcid.org/0000-0002-9941-999X
dc.contributorhttp://lattes.cnpq.br/4548225471488796
dc.creatorFerreira, Elizamary Otto
dc.date.accessioned2022-08-22T19:42:42Z
dc.date.accessioned2022-12-06T14:40:01Z
dc.date.available2022-08-22T19:42:42Z
dc.date.available2022-12-06T14:40:01Z
dc.date.created2022-08-22T19:42:42Z
dc.date.issued2022-06-02
dc.identifierFERREIRA, Elizamary Otto. Análise das propriedade ligadas à durabilidade dos concretos de ultra alto desempenho confeccionados com microssílica e cinza de casca de arroz. 2022. Dissertação (Mestrado em Engenharia Civil) - Universidade Tecnológica Federal do Paraná, Curitiba, 2022.
dc.identifierhttp://repositorio.utfpr.edu.br/jspui/handle/1/29356
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/5253610
dc.description.abstractSince the beginning of the works involving ultra-high performance concretes, several applications began to emerge due to the mechanical performance characteristic of this product and the ability of easy molding, since they present self-compacting behavior and absence of coarse aggregates. Thus, the feasibility of using it as a repair material became required due to the fact that it presents a dense matrix and less permeability than conventional concrete. Thus, the present work analyzed the behavior of ultra-high performance concrete with two different pozzolans: microsilica and rice husk ash. The compressive strength of both concretes presented results higher than 130 MPa after 28 days, and there was no increase in strength analyzing the results for 90 days. For the performance in relation to porosity and permeability, the concretes composed by microsilica presented a propensity to water absorption about 20% lower than the ones molded with rice husk ash, however, analyzing the behavior against the attack of sulfates, the concrete composed by rice husk ash had the content of penetration of sulfates about 50% lower than the ones composed by microsilica. Furthermore, analyzing the performance of the materials when subjected to different temperatures of 200°C and 300°C both had decreases in mechanical strength of about 26% and 36%, respectively. At the temperature of 400°C, it was possible to identify the phenomenon of spalling, and it is not possible to consider resistance of this type of material to the sharp rise in temperature. With this, there is potential to use such composite thanks to the high mechanical strength when for the good performance in relevant characteristics linked to low permeability and high durability.
dc.publisherUniversidade Tecnológica Federal do Paraná
dc.publisherCuritiba
dc.publisherBrasil
dc.publisherPrograma de Pós-Graduação em Engenharia Civil
dc.publisherUTFPR
dc.rightshttp://creativecommons.org/licenses/by-nc/4.0/
dc.rightsopenAccess
dc.subjectConcreto
dc.subjectMateriais de construção - Vida útil
dc.subjectConcreto - Mistura
dc.subjectAgregados (Materiais de construção)
dc.subjectResistência de materiais - Testes
dc.subjectCimento Portland
dc.subjectConcrete
dc.subjectBuilding materials - Service life
dc.subjectConcrete - Mixing
dc.subjectAggregates (Building materials)
dc.subjectStrength of materials - Testing
dc.subjectPortland cement
dc.titleAnálise das propriedade ligadas à durabilidade dos concretos de ultra alto desempenho confeccionados com microssílica e cinza de casca de arroz
dc.typemasterThesis


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