Advisor(s)
Abstract(s)
Devido à grande importância do betão e do betão armado na construção civil, o
mercado e a indústria tiveram a necessidade, técnica e econômica, de desenvolver e
aprimorar técnicas e ensaios para caracterização do mesmo. Os tipos de ensaios podem
ser divididos entre os destrutivos, que inutilizam totalmente ou parcialmente a peça ou
o elemento objeto de estudo, e os não destrutivos, que não geram danos, ou geram
danos insignificantes que podem ser reparados após os ensaios. Grande parte dos ensaios
destrutivos são feitos utilizando provetes recolhidos durante a betonagem, o que
inviabiliza a sua utilização no caso de inspeções e diagnóstico em estruturas de betão
já existentes. Os ensaios não destrutivos, realizados in-situ, surgem então como importante
opção para atestar e certificar a qualidade e especificações dos materiais. Tendo
suas primeiras citações na década de 40 do século XX, o ultrassom foi um dos métodos
de ensaio não destrutivo que teve muita evolução e ganhou espaço no mercado nos últimos
anos. Esse estudo pretende, com o auxílio de um equipamento ultrassónico atual
tipo scanner, nortear a precisão e as capacidades desse método de realizar a caracterização
mecânica de elementos em betão e betão armado. De entre as caracterizações
pretende-se estimar a resistência à compressão e à tração, localizar armaduras, medir
peças e determinar a profundidade de fendas e fissuras em elementos de betão e betão
armado.
Due to the great importance of concrete and reinforced concrete in construction, the market and industry had the technical and economic need to develop and improve techniques and tests for its characterization. The types of tests can be divided between destructive, which totally or partially destroy the element under study, and non-destructive, which do not generate damage, or generate insignificant damage to be repaired after testing. Much of the testing in the construction industry is usually done with specimens collected during concreting, consequently, these methods are impracticable in case of inspections and diagnosis in an existing concrete structure. Nondestructive testing, performed in-situ, come forward as an important option to certify and ensure the quality and specifications of materials. Having its first quotes in the 1940s, ultrasonic testing was one of the non-destructive methods that has developed the most and gained market share in recent years. With the use of a modern ultrasonic equipment scanner type, this study aims to verify the accuracy and capabilities of this method in performing the mechanical characterization of concrete and reinforced concrete elements. Among the characterizations it is intended to estimate the compressive and tensile strength, locate reinforcement steel, measure length and determine the depth of cracks in concrete and reinforced concrete elements.
Due to the great importance of concrete and reinforced concrete in construction, the market and industry had the technical and economic need to develop and improve techniques and tests for its characterization. The types of tests can be divided between destructive, which totally or partially destroy the element under study, and non-destructive, which do not generate damage, or generate insignificant damage to be repaired after testing. Much of the testing in the construction industry is usually done with specimens collected during concreting, consequently, these methods are impracticable in case of inspections and diagnosis in an existing concrete structure. Nondestructive testing, performed in-situ, come forward as an important option to certify and ensure the quality and specifications of materials. Having its first quotes in the 1940s, ultrasonic testing was one of the non-destructive methods that has developed the most and gained market share in recent years. With the use of a modern ultrasonic equipment scanner type, this study aims to verify the accuracy and capabilities of this method in performing the mechanical characterization of concrete and reinforced concrete elements. Among the characterizations it is intended to estimate the compressive and tensile strength, locate reinforcement steel, measure length and determine the depth of cracks in concrete and reinforced concrete elements.
Description
Keywords
Betão Betão armado Ultrassom Ensaio não destrutivo
Citation
Abreu Filho, Marco; Luso, Eduarda; Moreno, Carlos (2019). A utilização de equipamento ultrassónico na caracterização mecânica de elementos em betão armado. In VI Encontro de Jovens Investigadores do Instituto Politécnico de Bragança. Bragança: IPB