Author(s):
Almukashfi, Abdalla Mustafa Abdalla ; Castellanza, Ricardo ; Correia, A. Gomes ; Arroyo, Marcos ; Zuretti, Carlo ; Bendea, Daniela ; Moldovan, Ionut Dragos
Date: 2024
Persistent ID: https://hdl.handle.net/1822/93561
Origin: RepositóriUM - Universidade do Minho
Project/scholarship:
info:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FEAM-GTC%2F29923%2F2017/PT;
Subject(s): Small strain shear modulus; Bender element; Modified Rowe cell; Dynamic interface; Indústria, inovação e infraestruturas; Engenharia e Tecnologia::Engenharia Civil
Description
The small strain shear modulus (G0) is an important characteristic of geomaterials. Its laboratory measurements are very frequently based on bender element transducers installed in different geotechnical apparatuses. Despite their widespread use, there is room to improve the precision, reproducibility, and robustness of bender element measurements, which are currently hampered by an oversimplified interpretation model of the test. Aspects such as transducer directivity, apparatus-induced size effects, and boundary reflectivity are poorly understood and accounted for. This work presents a novel modified Rowe cell apparatus specifically designed to obtain experimental data relevant to those features. The modified Rowe cell uses transmitter and receiver bender elements on the same boundary of the sample, performing dynamic measurements in echo mode with variable initial specimen size. Additionally, the modified Rowe cell endorses the flexible installation of the receivers and enables the use of multiple receiver
FCT -Fundação para a Ciência e a Tecnologia(2022.06879)
