Fator de eficiência da resistência prisma/bloco cerâmico de paredes vazadas

• Ano de defesa: 2015
• Autor(a) principal: Portella, Rafael Pires
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Santa Maria; BR; Engenharia Civil; UFSM; Programa de Pós-Graduação em Engenharia Civil
• Palavras-chave em Português: Resistência à compressão; Blocos cerâmicos de paredes vazadas; Fator de eficiência; Compressive strength; Ceramic hollow block; Efficiency factor; CNPQ::ENGENHARIAS::ENGENHARIA CIVIL
• Link de acesso: http://repositorio.ufsm.br/handle/1/7877

The Brazilian civil construction showed in the last few years a large increase in technology, thus increasing the competitiveness in the labor market. In order to remain in compliance with the standard requirements, builders need to improve, both in workmanship as in materials used questions. The masonry had an important growth in the last few years, thus increasing the need to develop studies and constantly improve the National Standards. The compressive strength is the most important factor in structural masonry, than a study and deep knowledge of the subject is necessary for designers can accomplish the projects in the best possible manner. For the use of ceramic block, NBR 15812-1 recommends that the efficiency factor walls/prism that must be used is 0,70, but there is no standardized value for the efficiency factor prism/block, leaving only to designer the choice of this value. For the project to be well specified, with the components selected as best as possible, the efficiency factor prism block have decisive role, as thought the designer calculate the prism designer strength, he must specify the mean compressive strength of mortar as the characteristic compressive strength of blocks and, if necessary, grout. With the aid of the Building Construction Material Laboratory of the Federal University of Santa Maria, which provided its tests results of the years 2007 to 2014, a study was conducted to calculate the efficiency factor of prism/block in different strength ranges of the blocks. Following this study, analyzes were made to try to predict behavior of efficiency factor due to the compressive strength of the block and be able to get a usual value for the conditions of the tested components. Only ceramic hollow blocks with no grout were approached in this study because they were in a large amount, providing greater reliability to the results.