Interference of natural vibrations in four-point bending test on beams with asphalt composite made with calcined clay aggregate
| Autor: | A. C. L. da Silva, C. L. da Silva, A. K. C. Monteiro, C. A. Frota |
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| Jazyk: | English<br />Portuguese |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Cerâmica, Vol 67, Iss 383, Pp 344-350 (2021) |
| Druh dokumentu: | article |
| ISSN: | 1678-4553 0366-6913 |
| DOI: | 10.1590/0366-69132021673833032 |
| Popis: | Abstract Relevant mechanical parameters of asphalt composites, such as the dynamic modulus and phase angle, are obtained by means of four-point bending tests. It is a dynamic test based on the application of sinusoidal load pulses and sinusoidal displacement response. A sinusoidal response can be difficult to record due to different issues, such as noise during an experiment. In strain-controlled tests with the application of a low-load amplitude with asphalt mixtures at high temperatures composed with calcined clay, which is the case of the test carried out in this study, a relationship was observed between the apparent noise recorded and the frequencies of the beam’s natural vibration. This outcome led to the conclusion that these imperfections are not a result of failures in the procedure, but of the natural behavior of the beam. This conclusion can assist in the filtering of information to obtain better results. |
| Databáze: | Directory of Open Access Journals |
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