05.1 - Graduação (UACSA)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2909
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Resultados da Pesquisa
Item Desenvolvimento de ferramenta computacional para o dimensionamento de blocos de ancoragem para tubulações sob pressão(2021-12-10) Medeiros, Khrys Kathyllen da Silva de; Silva, Jordlly Reydson de Barros; http://lattes.cnpq.br/4382584044561547; http://lattes.cnpq.br/5605761011467421Thrust blocks for pressurized pipelines are concrete blocks designed to resist the applied forces, mainly due to hydraulic thrust. In many situations, a thrust block is required to ensure the safety of the pipeline, therefore, it is necessary the verifications are carried out correctly to prove those elements’ stability and efficiency. In order to develop a computational tool to help in the thrust elements design and safety verification for pressurized pipelines, a computational software named ProBlocos was developed. The tool interface is divided into three main areas: input data, result report and thrust block sketch. Real blocks from academic research were used to carry out tests and check the results obtained by the created software. The results showed that the developed program is low-cost, simple and effective to aid in the development of pressure pipeline projects. Thereby, the proposed work can be used by engineering professionals and students, regardless of the user's familiarity with the computer language used.Item Produção de concretos com resíduos de poliuretano triturado em substituição ao agregado miúdo(2021-12-08) Pereira, Wesley Batista; Galvão, Simone Perruci; http://lattes.cnpq.br/1523292800241605; http://lattes.cnpq.br/7022069132421368The reuse of potential materials that would otherwise be sent to landfills or stored in incorrect locations, contributing to the pollution of water courses and influencing the sewage system of cities and the most varied damages to the environment and the population, is a reality each more current. Among these materials, the polyurethane polymer (PU) stands out in its many variations, where its reintroduction into the production chain brings socio-environmental advantages. This article presents a comparative analysis between a mix of conventional concrete and concretes with partial replacements of fine aggregate by crushed expanded polyurethane waste, from refrigerator scrap, in 5% and 10% contents, replaced in relation to the volume of the sand, this procedure was also performed for a mix with the addition of silica fume. Two pilot traces were developed, one with silica (CS) and one without silica (SS). The properties of the concrete produced were evaluated through the slump test of the cone trunk (NBR 16889: 2020), analysis of compressive strength (NBR 5739: 2018), tensile strength by diametrical compression (NBR 7222:2011), mass specific and water absorption (NBR 9778:2005). The results obtained from this study demonstrate that the increase in the amount of PU foam in concrete reduced significantly the specific mass and reduced the mechanical strength of the part. It is noteworthy that the use of silica fume can be a differential in the production of concrete with recycled aggregates such as expanded PU foam, so that the resistances are maintained.Item Análise de viabilidade entre concretos dosados pelos métodos da ACCP/ACI e IPT/USP(2019-07-08) Nascimento, Lucas Costa do; Araújo, Fernanda Wanderley Correa; http://lattes.cnpq.br/7616387320307731; http://lattes.cnpq.br/7949189322240161The proper determination of the proportion of materials in the production of a concrete can imply a significant reduction of the final cost of work, since it is one of the materials most used in construction. The wide use in civil works indicates the need to rationalize the quantity of materials composing the mixture by determining an efficient feature that allows an adequate interconnection between the different physical properties required of a concrete with the lowest possible cost. This study presents a comparative analysis of physical and mechanical properties, material consumption and cost between two dosing methods: the one proposed by the Brazilian Portland Cement Association (ABCP), which is an adaptation of the ICA method, and the experimental method IPT / EPUSP. From initial parameters (concrete volume, compressive strength, cone trunk abatement and physical properties of cement and aggregates) and following the prescriptions and steps described by the methods, the respective traces were determined for the molding of a certain amount of ruptured specimens aged 14 and 28 days. With the obtained data, it was verified that both methods are able to provide concretes with the predefined physical properties. In terms of cost, the financial analysis of material consumption, based on the reference prices of the National System of Costs Survey and Civil Construction Indices (SINAPI / PE April-2019), verified a greater material saving by the IPT / EPUSP.Item Avaliação das propriedades mecânicas de um concreto não estrutural utilizando agregado de PET em substituição ao agregado miúdo(2019-02-01) Meireles, Hygor Alves; Galvão, Simone Perruci; http://lattes.cnpq.br/1523292800241605; http://lattes.cnpq.br/4436024273659412Item Classificação e quantificação dos resíduos de construção e demolição (RCD) e suas pontencialidades de reciclagem ou reutilização em cinco obras de edificação na cidade do Recife(2017-08-30) Amorim Júnior, Laelson de Andrade; Galvão, Simone Perruci; http://lattes.cnpq.br/1523292800241605; http://lattes.cnpq.br/7943300714310248The city of Recife, region with several natural landscapes and attractive for tourism, business and leisure, has been developing annually. In most of the neighborhoods, there are large buildings being erected, leading the academic community and the state to worry about the type of policy adopted for the disposal, reuse and recycling of solid waste generated in construction, in order to avoid the environmental impact. In the Northeast Region of Brazil alone, 24,310 t / day of construction and demolition waste (CDW) were collected. Good results have already been visualized by Brazilian researchers regarding the reuse of residues, especially those of class A, generated on site. This work has proposed to classify the different types of construction and demolition waste and to indicate different forms of reuse in construction works in the city of Recife. Five (5) works were evaluated, from four (4) companies, located in different districts of Recife. To obtain the desired data, an electronic questionnaire, google forms platform, was developed by the research group. The construction traditional system of reinforced concrete was the main visualized in the works analyzed, generating as main types of residues: ceramic bricks, mortars, plaster, concrete and wood. In this work, recycling practices were verified in one of the analyzed companies, where brick and tile residues were reprocessed and used as a small aggregate for making mortars and lean concrete. However, the vast