Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/13567
Título: | New method for continuous monitoring of concrete E-modulus since casting using an output-only modal identification technique |
Autor(es): | Azenha, Miguel Magalhães, Filipe Faria, R. Cunha, Álvaro |
Data: | 2010 |
Editora: | CRC Press |
Resumo(s): | A new methodology that allows the continuous measurement of concrete E- mod-ulus since casting is presented in this paper. This methodology is a variant to the classical reso-nant frequency methods, which have the downside of requiring concrete to be de-mouldable and withstand mechanical impact to start testing. The proposed experimental setup comprises a simply supported beam made-up with an acrylic tube, filled with the concrete to be tested, whose mid-span vertical accelerations induced just by ambient vibrations are continuously mon-itored by an accelerometer. The numerical treatment of the monitored accelerations allows iden-tification of the 1st resonant frequency of the composite beam, which is evolving as concrete hardens. The E-modulus of concrete can thus be directly obtained from the monitored frequen-cy. Besides the description of the overall setup, the results obtained in an experiment in which the concrete E-modulus was quantified also through static tests on the beam and via compres-sive tests in cylinders are presented and discussed. |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/13567 |
ISBN: | 9780415593182 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | ISISE - Comunicações a Conferências Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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[10].pdf Acesso restrito! | 317,29 kB | Adobe PDF | Ver/Abrir |