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Previous issue date: 2014-05-23 / Infrastructure works are included in strategic areas for the social development. For that matter that all of the investments are very important for the social development. When the population has enough water and an acceptable quality, and it includes a wastewater gathering and its treatment, the whole society became less susceptible to the water diseases. Even the Water Supply and the Sewage depend for its perfect operation of reservoirs, or of the accumulation of water to provide the popular necessity, either due to retention or for the treatment wastewarer. These structures present very specific environmental conditions, because the microclimate created around them, like high environmental humidity and for the existence of many harmful substances for the concrete, such as chloride ions presents in water. The reservoir that compose the System of Water Supply of Natal were built between 1970s and 1980s, a period whom the technical and scientific community did not have in-depth studies about the reinforced concrete mechanism of deterioration. Therefore, these reservoirs have been suffered accelerated deterioration progress, and they have been shown many pathological manifestations strikingly visible. In front of all these problems this academic work aims to identify the generally conditions of conservation of all the reservoirs components of the Water Supply System of Natal. This academic work objectives to develop a recuperation plan for use in these reservoirs, in this academic work it was achieved all the survey of pathological manifestation existing in each reservoir. It was made with local visits, photographic recorders of all manifestations
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and realization of in loco tests. The other step consisted in a application of GDE/UnB metodolgy reformulated by Fonseca (2007). In the step of local visits in each reservoir it was evaluated carbonation depth, by spreading a phenolphthalein solution with 1% of concentration; evaluation of contamination of chlorides, by spreading silver nitrate solution with 1% of concentration, and evaluation of width cracks. After the conclusion of all the testings, it was established that all reservoir, studied in this academic work, have showed an advanced deteriorating condition. It?s presents prevalent pathological manifestations as unacceptable cracks, spots, efflorescence and reinforcement corrosion, and in some cases, chlorides contamination. After the conclusion of the testings and its concatenation it was able to implementing, using GDE/UnB methodology, the order of the restoration its service life and initial safety conditions / As obras de infraestrutura englobam ?reas estrat?gicas para o desenvolvimento da sociedade. Neste ?mbito as obras de saneamento s?o de suma import?ncia para o desenvolvimento social. Com o fornecimento de ?gua em quantidade suficiente e qualidade satisfat?ria, juntamente com a coleta e o devido tratamento dos efluentes dom?sticos, a sociedade torna-se menos suscept?vel ?s doen?as de veicula??o h?drica. Tanto o Sistema de Abastecimento de ?gua quanto o de Esgotamento Sanit?rio dependem, para seu perfeito funcionamento, de reservat?rios, seja para o ac?mulo de ?gua para atendimento da popula??o, seja para a devida reten??o e tratamento dos efluentes dom?sticos. Essas estruturas apresentam caracter?sticas bem espec?ficas de utiliza??o, porque o microclima criado em seu entorno caracteriza-se pela elevada umidade relativa do ar e pela presen?a de subst?ncias danosas ao concreto, como os ?ons cloretos presente na ?gua. Os reservat?rios que integram o Sistema de Abastecimento de ?gua de Natal foram, em sua maioria, constru?dos entre as d?cadas de 1970 e 1980, per?odo em que o meio t?cnico-cient?fico n?o dispunha de estudos aprofundados sobre o mecanismo de deteriora??o do concreto armado. Por isso, esses reservat?rios sofrem com o processo acelerado de degrada??o, apresentando diversas manifesta??es patol?gicas visivelmente identific?veis. Diante dessa problem?tica este trabalho visa identificar as condi??es gerais de conserva??o dos reservat?rios integrantes do Sistema de Abastecimento de ?gua de Natal. Objetivando desenvolver um plano de recupera??o para esses reservat?rios, neste trabalho realizou-se o levantamento das manifesta??es patol?gicas apresentadas em
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cada um dos reservat?rios, com a realiza??o de visitas in loco, registro fotogr?fico das manifesta??es e a realiza??o de ensaios de campo. A etapa posterior consistiu na aplica??o da metodologia GDE/UnB reformulada por Fonseca (2007). Na etapa de visita t?cnica a cada um dos reservat?rios foram avaliadas a profundidade de carbonata??o, por meio da aspers?o de solu??o de fenolftale?na a uma concentra??o de 1%; avalia??o da contamina??o por cloretos, por meio da aspers?o de solu??o de nitrato de prata a uma concentra??o de 1%, e a avalia??o das aberturas de fissuras. Ap?s a realiza??o dos ensaios, constatou-se que os reservat?rios objeto deste estudo encontram-se em avan?ado estado de deteriora??o, apresentando como manifesta??es patol?gicas recorrentes a presen?a de fissura??o inaceit?vel, manchas e efloresc?ncias e corros?o das armaduras, devido, principalmente ? carbonata??o, e em alguns casos, a contamina??o por cloretos. Ap?s a obten??o dos resultados e a realiza??o de sua concatena??o, foi poss?vel hierarquizar, por meio da aplica??o da metodologia GDE/UnB, a ordem que os reservat?rios devem sofrer interven??es para recupera??o de sua vida ?til e condi??es iniciais de seguran?a
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/14857 |
| Date | 23 May 2014 |
| Creators | Pereira, Hazen Willian Bezerra |
| Contributors | CPF:52402444487, http://lattes.cnpq.br/7590200701773198, Silva Filho, Jos? Neres da, CPF:83729950606, http://lattes.cnpq.br/0915972389480304, Souza, Paulo Alysson Brilhante Faheina de, CPF:02209937426, http://lattes.cnpq.br/2173551172181329, Sousa, Jos? Getulio Gomes de, CPF:02091420492, http://lattes.cnpq.br/2164697125848306, Almeida, Maria das Vit?rias Vieira de |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Engenharia Civil, UFRN, BR, MEC?NICA DAS ESTRUTURAS, ESTRUTURAS DE CONCRETO E ALVENARIA E MATERIAIS E PROCESSOS CONSTRUTIVOS |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| 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 |
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