Made available in DSpace on 2014-12-17T14:06:56Z (GMT). No. of bitstreams: 1
PauloHCF_DISSERT.pdf: 1512576 bytes, checksum: ec50ef7eb7dc51a6d221e75854fea430 (MD5)
Previous issue date: 2010-12-20 / This work had to verify the influence of massar?, while mortar component, in the process of formation of saltpeter in cementitious plaster walls of buildings. The massar? is a ceramic material, texture areno usually found in large volumes argillaceous sediments in Teresina, Piaui State capital, which is associated with the Portland cement mortar form for fixing and finishing in construction. Saltpeter or flowering is a pathology that happens in gypsum wallboard, which invariably reaction between soluble salts present in materials, water and oxygen. This pathology, supposedly credited to massar? caused its use to suffer significant reduction in the market of the buildings. Verify this situation with particular scientific rigor is part of the proposal of this work. Grading tests Were performed, consistency limits (LL, LP and IP), determination of potential hydrogen, capacity Exchange (CTC), electrical conductivity (EC), x-ray fluorescence (FRX) and x-ray diffraction (DRX). Massar? analysed samples in number six, including sample plastering salitrado presented potential hydrogen medium 5.7 in water and 5.2 on KCl n and electrical conductivity (EC), equal to zero. These results pointed to the affirmative that massar? is a material that does not provide salinity content that can be taken into consideration. It is therefore concluded that the material analyzed not competing, at least with respect to the presence of soluble salts, for the formation of saltpeter / Este trabalho teve o objetivo de verificar a influ?ncia do massar?, enquanto componente de argamassa, no processo de forma??o do salitre em rebocos de paredes de edifica??es. O massar? ? um material cer?mico, geralmente de textura areno argilosa encontrado em grandes volumes na cidade de Teresina, capital do Estado do Piaui, que associado ao cimento portland, forma argamassa para assentamento e para reboco na constru??o civil. O salitre ou floresc?ncia ? uma patologia que acontece nos rebocos, provindo, invariavelmente, da rea??o entre sais sol?veis presentes nos materiais, ?gua e oxig?nio. Esta patologia, supostamente creditada ao massar? fez com que seu uso sofresse redu??o significativa no mercado das edifica??es. Verificar esta situa??o com determinado rigor cient?fico faz parte da proposta deste trabalho.
Foram executados ensaios de granulometria, limites de consist?ncia (LL, LP e IP), determina??o do potencial de hidrog?nio (pH), capacidade de troca de c?tions (CTC), condutividade el?trica (CE), fluoresc?ncia de raios X (FRX) e difra??o de raios X (DRX).
As amostras de massar? analisadas, em n?mero de seis, inclusive amostra de reboco salitrado, apresentaram potencial de hidrog?nio (pH) m?dio igual a 5,7 em ?gua e 5,2 em KCl N e condutividade el?trica (CE), igual a zero. Estes resultados apontaram para a afirmativa que o massar? ? um material que n?o apresenta teor de salinidade que possa ser levado em considera??o. Conclui-se, portanto, que o material analisado n?o concorre, pelo menos com rela??o ? presen?a de sais sol?veis, para a forma??o do salitre
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/12704 |
| Date | 20 December 2010 |
| Creators | Fernandes, Paulo Henrique Campos |
| Contributors | CPF:05012180410, http://lattes.cnpq.br/9858094266525225, Alves J?nior, Clodomiro, CPF:09621199468, http://lattes.cnpq.br/7441669258580942, Chaves, Leonardo Flamarion Marques, CPF:02837501468, Silva, Jaquel?gia Brito da, CPF:02585622428, http://lattes.cnpq.br/5948828937239319, Tavares, Elcio Correia de Souza, CPF:49047914449, http://lattes.cnpq.br/4400396552273448, Gomes, Uilame Umbelino |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Ci?ncia e Engenharia de Materiais, UFRN, BR, Processamento de Materiais a partir do P?; Pol?meros e Comp?sitos; Processamento de Materiais a part |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | Portuguese |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
Page generated in 0.0025 seconds