Dissertações
URI permanente para esta coleçãohttps://rigalileo.itegam.org.br/handle/123456789/174
Dissertações produzidas oriundas de convênios
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Resultados da Pesquisa
Item Utilização do Bloco de Concreto em Construção de Empreendimentos: Um Estudo de Caso(Instituto de Tecnologia, 2017) BARROS, Íris Vargas; BRAGA, Eduardo de MagalhãesThe general objective of this dissertation was to analyze in two companies in the city of Manaus how the production process of concrete blocks is characterized, demonstrating their technical viability of production. About the methodology, it is a case study carried out in Companies A and B, located in the city of Manaus, whose main activity is the production of concrete blocks and visits to two works (Supermarket X and Condominium Y) that used concrete blocks in their constructions. The results reveal that the advantages of the blocks could be verified in the buildings, emphasizing that one of the main advantages is that they are leaked and allow the passage of pipes and pipes for electrical and hydraulic installations.Item A Caracterização e Resistência do Seixo Fino (Quebradinho) no Município de Santarém - PA(Universidade Federal do Pará, 2015) QUEMEL, Laise Deanne Figueira; PICANÇO, Marcelo de SouzaCivil construction works in Santarém have been using a coarse aggregate popularly called 'quebradinho' in structural concrete. This work aimed to study the resistance of the 'quebradinho' or 'gravel' in natura and washed, proving its efficiency as an aggregate for concrete in buildings and reducing construction costs in the region. Using the ABCP method for resistance proof, the results of physical characterization and mechanical properties of concrete dosed with such aggregates were shown. All molded specimens presented satisfactory results within the compressive strength standards between the 3rd and 28th days. It is concluded that the use of quebradinho is economically viable and effective, although further studies on water absorption and durability are needed.Item Concretos Dosados com Agregados Miúdos da Cidade de Santarém/PA(Universidade Federal do Pará, 2015) BRANCO, Yverton Homero Ramos; Prof. Dr. Bernardo Borges Pompeu NetoDue to the variability found in the composition of the fine aggregate regarding color, grain size, presence of clay, and powdery materials, technical control is necessary to examine the fine aggregate. The general objective of this research is to characterize and quantify two sand samples in the laboratory, one white and the other pink, both from deposits located in the city of Santarém/PA. As a specific objective, compare the trace obtained in the laboratory (controlled trace) with the estimated trace (empirical) practiced in small works. The methodology is based on the literature review of scientific articles, books, and technical standards. The characterization of the samples was obtained through test procedures and standardized materials, determining the specific mass, unit mass, particle size analysis, powdery material content, and other characteristics. The ACI/ABCP method was used for dosing and determining the traces for the sand samples. Three traces were performed with a resistance to be achieved of 20 MPa, two controlled traces in the laboratory, and one estimated trace. After making and testing 24 specimens, the results showed that the controlled trace in the laboratory reaches the desired strength, while the estimated trace shows resistance below the expected. It is concluded that technical control of dosing in the sand to be used throughout the construction process of any civil work in Santarém/PA is important to ensure concrete within technical standards, resistant to constant humidity and extreme temperature variations during the six months of winter in the Amazon.Item Análise Estrutural de Concretos Produzidos com Resíduos de Beneficiamento de Placas de Mármore e Granito(Instituto de Tecnologia, 2019) BANDEIRA, Sandy Rebelo; MAGALHÃES, Edílson MarquesThe present work shows the feasibility of the use of cutting residues of marble and granite slabs in concrete production. The research was carried out in a series of stages, which comprised the collection of waste in the beneficiary companies, through the process of crushing, sieving of waste and production and breaking of specimens. The chemical analysis performed by x-ray fluorescence shows that the material meets the requirements of NBR 12653: 2015 for the concentration of aluminum, silicon and iron oxides, qualifying it as pozzolanic material. The results of axial compression showed that the mixtures produced with the substitution of aggregates meet the minimum requirements of NBR 6118: 2014 for application in structural elements subjected to moderate environmental aggression, class II.Item Utilização da Pedra de Barro como Agregado Graúdo para Concretos(Universidade Federal do Pará, 2015) MATEUS, Gustavo Menezes; OLIVEIRA, Dênio Ramam Carvalho deThe state of Acre has long faced a chronic shortage of rock aggregate for the construction industry due to its unavailability in the soil composition and the high cost of importing this product. On the other hand, there is an abundance of raw material for the ceramic industry, such as clay. This work presents an aggregate for concrete made from calcined clay, similar to the process used in the production of ceramic artifacts. The new product reduces construction costs in the region and enhances the quality of structures over the use of brick pieces. The results show that the strength of the aggregates is satisfactory, and the mechanical properties of the concrete dosed with usual amounts of cement confirm the technical feasibility of clay aggregates for structural concrete.Item Concreto Produzido na Cidade de Santarém - Pará: Um Estudo Comparativo de Métodos de Produção e Qualidade(Universidade Federal do Pará, 2014) SANTOS, Ivens Silva dos; Prof. Dr. Bernardo Borges Pompeu NetoThis paper presents a study on concrete production in the city of Santarém-PA, comparing the methods of production in concrete plants, mixers, and manual mixing. The objective was to identify the main factors influencing concrete quality, evaluate the use of safety equipment, verify technological control, and analyze the productivity and financial costs of different methods. The research was conducted through interviews with professionals in the field and technical visits to construction sites. The results indicated that concrete produced in mixers is the most used in Santarém, especially for small structures, while ready-mix concrete is preferred for large quantities and heights. The quality of the concrete was affected by factors such as poor aggregate quality, excess water, and lack of technological control. The study concludes that ready-mix concrete is the most recommended due to its productivity and technological control, although there are still challenges to be overcome.Item Propriedades Mecânicas do Concreto Laterítico da Região do Acre(Universidade Federal do Pará, 2014) DE LUCA NETO, Luis Antonio; POMPEU NETO, Bernardo BorgesThe present work deals with the investigation of the properties of concrete made with aggregate of laterite, from the vicinity of Rio Branco in Acre. This study is of particular importance to the Acre region, given the abundant occurrence of this material and the scarcity of aggregate originating from bedrock. Initially addressing the characteristics of laterite, occurrences in the country, where they are exploited, technological characterization for use in concrete. The investigation of the properties of lateritic concrete was made taking as reference the concrete made with coarse aggregate igned granite, proven quality. Among the properties investigated stand out, resistance to compression and tensile and modulus of elasticity It is concluded that the application of laterite concrete is technically feasible in current works.Item CONCRETOS FABRICADOS COM AGREGADOS GRAÚDOS DISPONÍVEIS EM SANTARÉM E REGIÃO OESTE DO PARÁ(Universidade Federal do Pará, 2015) MAIA, Carlos Tadeu Arantes; SOUZA, Paulo Sérgio LimaThe study examines structural concrete production using different coarse aggregates available in Santarém, analyzing fresh and hardened state properties. Gravel, pebble, and quebradinho were tested with three water/cement ratios (0.74, 0.54, and 0.41). Results showed lower water consumption with pebble and higher final strengths with gravel. A cost analysis highlighted the economic advantage of quebradinho for 20 and 30 MPa concretes. Findings support the feasibility of using local aggregates in concrete production.