Measurement and interpretation of the small strain stifness of Boštanj silty sandVilhar, Gregor (Avtor) Jovičić, Vojkan (Avtor) , Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru (Lastnik avtorskih pravic) silty sandtriaxial testingsmall strain stiffnessbender elementstime-domain and frequency-domainmeasurementsThis paper presents measurements, and an interpretation of these measurements, based on the use of bender-element probes for Boštanj silty sand. The samples were prepared at different initial void ratios and isotropically compressed up to 5 MPa. The bender-element technique was used to determine the dynamic shear modulus ($G_0$) of the soils at very small strains. The multiple bender-element probes were shot at different excitation frequencies in order to increase the reliability of the measurements. The $G_0$ stiffness was determined by using three different techniques: a) the first-time arrival, b) the phase-change method and c) the cross-correlation method. The systematic differences observed between the $G_0$ values, calculated using the three techniques, are discussed. The variation of $G_0$ in the log$G_0$ - log$p'$ plane was evaluated for the Boštanj silty sand and compared with other sands.20092018-06-06 11:44:53Znanstveno delo70693ISSN: 1854-0171UDK: 624OceCobissID: 215987712COBISS_ID: 1577831ISSN pri članku: 1854-0171NUK URN: URN:SI:UM:DK:NYSUHW5TslFakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru