Navegando por Assunto "Concreto reforçado com fibra"

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Resíduo de garrafão de agua inserido em pavimento de concreto como agente de reforço da matriz
(Universidade Federal do Pará, 2019-01-25) SILVA, Cristiane Araujo dos Santos; PICANÇO, Marcelo de Souza; http://lattes.cnpq.br/4535052395600357
In the face of the problematic situation witnessed by the world population due to the lack of recycling practices, urban pollution has been growing considerably. Recycling needs to be more present in the daily lives of people and industries so that the environment "breathes" in a healthier way. Intending to assist with the theme, the aim is to evaluate the reuse of the water bottle waste (GA) as fibers with the intention of contributing to concrete reinforcement in pavement. The interest to study the waste in question was through a visit to a recycling plant in the city of Ananindeua/PA, where there was a large amount of bottled mineral water stored and cannot longer return to the food sector, because it’s had an expired period of validity. The work consists of evaluating both the physical, mechanical and chemical characteristics of the waste as well as the mechanical characteristics of the composites (axial compression, diametral compression, flexural tensile strength, tensile analysis and modulus of elasticity), according to current standards described in the methodology item, with ages of 28, 56 and 84 days. According to preliminary characterizations of the materials, concrete with 0%, 0,5%, 1,0% and 2,0% with water bottle residue addition was elaborated and another one for comparative effect with addition of 0,5 % of commercial polypropylene microfibers. A concrete composition (c: a: b: a / c-1: 2,36: 3,33: 0,42) was used as reference for rigid paving for heavy traffic in Belém-PA with fct, k = 4.50MPa. In general, the results presented in this research, shows a performance of the reinforced concrete with compatible GA fiber and / or superior with respect to the concrete with addition of commercial microfiber, but the residue of GA to become a commercial product still needs a beneficiation process.