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Previous issue date: 2016-05-20 / A alvenaria estrutural ? um m?todo construtivo muito antigo, no qual as alvenarias das edifica??es t?m a funcionalidade estrutural al?m de veda??o, e foi o primeiro m?todo utilizado pelo homem para constru??o de abrigos permanentes. Esta modalidade executiva possibilita uma maior economia nos custos das edifica??es, entretanto exige um maior controle na confec??o e aplica??o dos blocos. Outro par?metro importante diz respeito ao p? de brita, res?duos dos britadores, pois n?o possuem utilidade em qualquer cadeia produtiva e assim, s?o depositados em aterros ou na natureza, degradando a qualidade do meio ambiente. Baseado neste ensejo, o reaproveitamento deste res?duo, aliado ? ind?stria ceramista, possibilita m?tuos benef?cios, pois diminui o estoque do rejeito dos britadores, elimina o impacto ambiental, reduz os custos de confec??o dos blocos e eleva a resist?ncia das alvenarias. Dentro deste contexto, este trabalho tem como objetivo estudar o comportamento do ?bloco cer?mico h?brido?, verificando os efeitos da incorpora??o do p? de brita na massa argilosa do bloco cer?mico sob as exig?ncias da Norma NBR-15270. As mat?rias primas foram coletadas em Caic?/RN, no caso do p? de brita, e em Assu/RN, no caso da argila, tendo sido formuladas incorporando os percentuais de 0%, 5%, 10% e 15% de res?duo. As amostras foram sinterizadas ? temperatura de 990?C, ? taxa de aquecimento de 5?C/min com isoterma de uma hora e submetidas a ensaios tecnol?gicos, como retra??o linear, absor??o de ?gua, porosidade aparente e resist?ncia ? compress?o. O resultado significativo obtido foi com a formula??o de 10% de res?duo incorporado, o qual elevou a resist?ncia ? compress?o dos blocos em m?dia de 26,41% e at? 58%. / The structural masonry is a very old construction method, where the walls of the buildings have structural functionality beyond seal, and it was the first method used by man to build permanent shelters. This executive mode enables greater savings in the buildings costs, but requires more control in the manufacture and application of the blocks. Another important parameter concerns the gravel dust, waste crushers, because they have no utility in any production chain and so are landfilled or deposited in nature, degrading the quality of the environment. Based on this, the reuse of this waste, together with ceramics industry, enables mutual benefits because it reduces the stock of waste crushers, eliminates the environmental impact, reduces the manufacturing costs of the blocks and increases the strength of masonry. Within this context, this work aims to study the behavior of the "hybrid ceramic block" by checking the effects of the incorporation of gravel dust in the clay mass of the ceramic block in the light of the requirements of the NBR-15270. The raw materials were collected in Caic?/RN, in the case of the gravel dust, and Assu/RN, in the case of clay, and were formulated incorporating the percentage of 0%, 5%, 10% and 15% residue. The samples were sintered at 990?C temperature, the heating rate of 5?C/min with an isothermal hour and subjected to technological testing as linear shrinkage, water absorption, porosity and compressive strength. The best result obtained in the study was 10% corporate residue which increased the compressive strength of the blocks on average 26,41% and up to 58%.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/21782 |
| Date | 20 May 2016 |
| Creators | C?mara, C?ssio Freire |
| Contributors | 05012180410, Silva, Jaqueligia Brito da, 02585622428, Silva, Angelus Giuseppe Pereira da, 30814111491, Oliveira, Leiliane Alves de, 01081015411, Dutra, Ricardo Peixoto Suassuna, 91875838449, Gomes, Uilame Umbelino |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM CI?NCIA E ENGENHARIA DE MATERIAIS, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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