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vol.79 número176ULTRASONIC SENSOR FOR THE PRESENCE OF OILY CONTAMINANTS IN WATERSTABILITY AND MINIMUM LATERAL BRACING FOR STEPPED COLUMNS WITH SEMI-RIGID CONNECTIONS INCLUDING SHEAR EFFECTS: II) VERIFICATION AND EXAMPLES índice de autoresíndice de assuntospesquisa de artigos
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DYNA

versão impressa ISSN 0012-7353

Resumo

CAMACHO-TAUTA, JAVIER; JIMENEZ ALVAREZ, JUAN DAVID  e  REYES-ORTIZ, OSCAR JAVER. A PROCEDURE TO CALIBRATE AND PERFORM THE BENDER ELEMENT TEST. Dyna rev.fac.nac.minas [online]. 2012, vol.79, n.176, pp.10-18. ISSN 0012-7353.

The bender element (BE) test method is used in a laboratory to obtain the shear wave velocity of soils. Despite its apparent simplicity, there is still no standard for this test. A number of factors affect the reliability of the results. These factors are taken into account to design and build a BE system in a triaxial cell. A method for calibrating the system is proposed, using aluminum rods of different lengths. Recommendations are made regarding the selection of the frequency of the pulse used to produce the perturbation for carrying out the test. Finally, a series of tests carried out on two kinds of sand specimens are presented.

Palavras-chave : bender element; shear modulus; shear wave velocity.

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