An?lise do comportamento mec?nico de concretos refor?ados com fibras e adi??o de res?duo de fresado asf?ltico

• Main Author: Martins, Jo?o Victor Rodrigues
• Other Authors: Jacintho, Ana Elisabete Paganelli Guimar?es de Avila
• Format: Others
• Language: Portuguese
• Published: Pontif?cia Universidade Cat?lica de Campinas 2018
• Subjects: Concreto com fibras; Fibras de a?o; Fibras de vidro; Res?duo de fresado asf?ltico; Ensaio Barcelona; Fiber Concrete; Steel fiber; Glass fiber; Milled asphalt residue; Barcelona Test; CNPQ::ENGENHARIAS::ENGENHARIA CIVIL::ESTRUTURAS::ESTRUTURAS DE CONCRETO
• Online Access: http://tede.bibliotecadigital.puc-campinas.edu.br:8080/jspui/handle/tede/1126

Submitted by SBI Biblioteca Digital ([e-mail]) on 2018-08-14T11:38:43Z No. of bitstreams: 1 Jo?o Victor Rodrigues Martins.pdf: 6347531 bytes, checksum: da963af88129f7568a2e10f7c530b612 (MD5) === Made available in DSpace on 2018-08-14T11:38:43Z (GMT). No. of bitstreams: 1 Jo?o Victor Rodrigues Martins.pdf: 6347531 bytes, checksum: da963af88129f7568a2e10f7c530b612 (MD5) Previous issue date: 2018-06-27 === Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) === Funda??o de Amparo ? Pesquisa do Estado de S?o Paulo (FAPESP) === The process of assembling the reinforcement and the density of the concrete in structural pieces demand time and displacement of labor. The use of reinforcement with fibers in partial replacement of the transverse reinforcement could reduce the time of manufacture and facilitate the densification of the parts. Given this scenario, this research aimed at the study of concrete reinforced with fibers and reinforced concrete beams, in order to verify their behavior. Traces of concrete reinforced with steel fibers and traces of concrete with alkali-resistant glass fibers were made. In addition, the asphaltic milling residue was used for partial replacement of the small and large aggregate in the percentage of 15%. The material characterization was performed according to ABNT standards. Tests were performed to evaluate the Compressive Strength, Indirect Traction, Elasticity Modulus, and Tenacity through the Barcelona and ASTM C-1399 Tests. The evaluation of the mechanical behavior was performed by means of four-point bending in reinforced concrete beams, aiming to show its behavior to the applicant efforts. The results show the positive effect of the fibers for concrete with residues in their composition, mainly with respect to the steel fibers. It was verified a greater performance of the fibers as the Residual Resistance of the concrete and its Tenacity. It was also apresentated the viability of the structural application of asphalt milling residue as partial replacement of natural aggregates. === O processo de montagem da armadura e do adensamento do concreto em pe?as estruturais demandam tempo e deslocamento de m?o de obra. O uso do refor?o com fibras em substitui??o parcial da armadura transversal poderia reduzir o tempo de fabrica??o e facilitar o adensamento das pe?as. Diante de tal cen?rio, esta pesquisa visou o estudo de concretos refor?ados com fibras e de vigas de concreto armado, a fim de verificar seu comportamento. Foram confeccionados tra?os de concretos refor?ados com fibras de a?o e tra?os de concretos com fibras de vidro ?lcali-resistentes. Ademais foi utilizado o res?duo de fresado asf?ltico para substitui??o parcial do agregado mi?do e gra?do na porcentagem de 15%. A caracteriza??o dos materiais foi realizada conforme as normas da ABNT. Foram realizados ensaios para an?lise da Resist?ncia a Compress?o, da Tra??o Indireta, do Modulo de Elasticidade, da Tenacidade por meio dos Ensaios Barcelona e ASTM C-1399. A avalia??o do comportamento mec?nico foi realizada por meio de flex?o em quatro pontos em vigas de concreto armado, visando mostrar o seu comportamento aos esfor?os solicitantes. Os resultados revelam o efeito positivo das fibras para concretos com res?duos em sua composi??o, principalmente no que diz respeito as fibras de a?o. Foi verificada maior atua??o das fibras quanto a Resistencia Residual do concreto e a sua Tenacidade. Demonstrou-se tamb?m a viabilidade da aplica??o estrutural do res?duo de fresado asf?ltico como substitui??o parcial de agregados naturais.