Submitted by Jadson Francisco de Jesus SILVA (jadson@uefs.br) on 2018-01-30T22:07:52Z No. of bitstreams: 1 Uiliana M?rcia da Silva Merc?s Farias_2017.pdf: 5844655 bytes, checksum: 1df6b86cb5dfd9f89a7bbd299fa1bf93 (MD5) / Made available in DSpace on 2018-01-30T22:07:52Z (GMT). No. of bitstreams: 1 Uiliana M?rcia da Silva Merc?s Farias_2017.pdf: 5844655 bytes, checksum: 1df6b86cb5dfd9f89a7bbd299fa1bf93 (MD5) Previous issue date: 2017-03-20 / The use of waste from Dimension Stone Industry as an inert material can be a good way to promote the sustainability of the construction sector. The Cariri stone is one of the dimension stones explored in state of Ceara, in Brazil. Thus, this work was developed with the main goal of studying a self-compacting concrete production (SCC) using Cariri stone sawdust waste (CSSW) in partial replacement with the natural fine aggregate. The SCC was designed using the method proposed by Melo (2005) considering two w/c ratios (0.57-0.70), and 10% of CSSW. The study was carried out in three stages: material characterization, mortar phase evaluation and SCC phase evaluation. In the fresh state, SCC was evaluated for fluidity, plastic viscosity, blocking capacity and segregation resistance, using V funnel, J-Ring, L-box and segregation column. In the hardened state, the SCC was evaluated for axial compressive strength, splitting tensile strength and water absorption, void index and specific density. The results showed that CSSW improve SCC cohesiveness and homogeneity, and it is feasible to apply up to 10% of CSSW in SCC production. / No sentido de promover a sustentabilidade do setor da constru??o civil, procura-se alternativas para diminuir o impacto ambiental gerado, atrav?s da descoberta de novos materiais alternativos, como os res?duos da ind?stria de beneficiamento de rochas ornamentais. Dentre os tipos de rochas ornamentais exploradas no Brasil, destaca-se um calc?rio laminado conhecido como ?Pedra Cariri?, que ? explorado no estado do Cear?. Assim, esse trabalho foi desenvolvido com o objetivo de estudar a produ??o de concreto autoadens?vel (CAA) utilizando res?duos de serragem de pedra Cariri (RSPC) em substitui??o parcial ao agregado mi?do natural. Utilizando a metodologia de Melo (2005) para produ??o de CAA, foram definidas as rela??es a/c (0,57-0,70). O estudo se deu em tr?s etapas: caracteriza??o dos materiais, fase argamassa e fase CAA. No estado fresco, o CAA foi avaliado quanto ? fluidez, viscosidade pl?stica, habilidade passante e resist?ncia ? segrega??o, por meio do ensaio de espalhamento, funil V, Anel J, Caixa L e coluna de segrega??o. No estado endurecido, o CAA foi avaliado quanto ? resist?ncia ? compress?o axial, ? resist?ncia ? tra??o por compress?o diametral e ? absor??o de ?gua, ?ndice de vazios e massa espec?fica. Os resultados indicaram a possibilidade da aplica??o de at? 10% de RSPC na produ??o de CAA.

Made available in DSpace on 2014-12-17T14:58:13Z (GMT). No. of bitstreams: 1 FlavioASL_DISSERT.pdf: 2460649 bytes, checksum: bed5dd26e82ea61d687c6641214ac014 (MD5) Previous issue date: 2012-04-27 / Space Science was built using a composite made of plaster, EPS, shredded tires, cement and water. Studies were conducted to thermal and mechanical resistance. Inside the mold EPS plates were placed in order to obtain a higher thermal resistance on the wall constructed, as well as to give it an end environmentally friendly in view of both the tire and the EPS occupy a large space in landfills and year need to be degraded when released into the environment. Compression tests were performed according to ABNT blocks to seal, measurements of the temperature variation in the external and internal walls using a laser thermometer and check the temperature of the indoor environment using a thermocouple attached to a digital thermometer. The experiments demonstrated the heat provided by the composite values from the temperature difference between the internal and external surfaces on the walls, reaching levels of 12.4 ? C and room temperature in the interior space of the Science of 33.3 ? C, remaining within the zone thermal comfort for hot climate countries. It was also demonstrated the proper mechanical strength of such a composite for sealing walls. The proposed use of the composite can contribute to reducing the extreme housing shortage in our country, producing popular homes at low cost and with little time to work / Foi constru?do o Espa?o Ci?ncia utilizando um comp?sito constitu?do de gesso, EPS, pneu triturado, cimento e ?gua. Foram realizados estudos de resist?ncias t?rmica e mec?nica. No interior do molde foram colocadas placas de EPS com o intuito de se obter uma maior resist?ncia t?rmica nas paredes constru?das, como tamb?m dar-lhe um fim ecologicamente correto, tendo em vista que tanto o pneu quanto o EPS ocupam grande espa?o em aterros sanit?rios e necessitam de anos para serem degradados quando lan?ados ao meio ambiente. Foram realizados ensaios de compress?o segundo as normas da ABNT para blocos de veda??o, medi??es da varia??o de temperatura nas paredes externas e internas utilizando um term?metro a laser e verifica??o da temperatura do ambiente interno utilizando um termopar acoplado a um term?metro digital. Os experimentos t?rmicos demonstraram os valores proporcionados pelo comp?sito a partir da diferen?a de temperatura entre as superf?cies internas e externas nas paredes, alcan?ando n?veis de 12,4?C e temperatura ambiente no interior do espa?o ci?ncia, de 33,3 ?C ficando dentro da zona de conforto t?rmico para pa?ses de clima quente. Demonstrou-se tamb?m apropriada resist?ncia mec?nica de tal comp?sito para paredes de veda??o. A utiliza??o do comp?sito proposto pode contribuir para a diminui??o do extremo d?ficit habitacional do nosso pa?s, produzindo resid?ncias populares a baixo custo e com pequeno tempo de obra