Probetas, probetas, probetas…, mejor más pequeñas
- Guerra-Romero, M. I.
- González Martínez, D.
- Juan- Valdés, A.
- Alonso, R. M.
- Rodríguez-Robles, D.
- García- González, J.
- Morán-del-Pozo, J. M.
ISSN: 0213-8468
Year of publication: 2016
Issue: 184
Pages: 105-109
Type: Article
More publications in: Ingeniería civil
Abstract
In many countries, compression and splitting tensile tests are usually performed using cylindrical specimens of 150 mm in diameter. This kind of specimen has about 12 kg mass or 20 kg if cast is included. The use of such heavy specimens associated with bad postures may hurt the back of laboratory staff, according to INSHT (Instituto Nacional de Seguridad e Higiene en el Trabajo), especially if they are people entitled to special protective measures with respect to loads. Spanish standard rules let us use smaller and lighter specimens. For instance, a cylindrical specimen of 100 mm in diameter has just 4 kg mass, which never hurts the back. In this study, results from splitting tensile test using cylindrical specimens of 150 and 100 mm in diameter were compared. It was found that there were no significant differences between the means obtained for each type of specimen. In view of the results, smaller, lighter specimens could be used rather than large ones. Nonetheless we also found that the results of the smaller specimens showed greater dispersion.