Results 241 to 250 of about 75,682 (299)
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New Approach to Resonant Column Testing

Geotechnical Testing Journal, 2013
Abstract This paper describes a new type of torsional resonant column device that has a quasi-fixed base and free top. In this device, a relatively rigid torque transducer is placed between the bottom platen and the fixed chamber base. A large capacity torque motor excites the top platen.
Salim K. Werden   +5 more
openaire   +1 more source

Resonant Column Testing of Frozen Ottawa Sand

Geotechnical Testing Journal, 1987
Abstract The unique properties of frozen soils have posed special problems for engineers seeking to install stable structures in cold climates. Foundations, pipelines, and other structures subjected to high-frequency low-amplitude vibrations present special problems to the designer even when construction occurs in nonfrozen ground.
PJ Bosscher, DL Nelson
openaire   +1 more source

Resonant Column Tests on Partially Saturated Sands

Geotechnical Testing Journal, 1991
Abstract This paper describes the measurement of the influence of capillary effects on the dynamic shear modulus of partially saturated sands. A Hall-type resonant column apparatus was used to perform the experiments. The materials tested included natural angular and subrounded sands, angular and subrounded sands with specified ...
X Qian, DH Gray, RD Woods
openaire   +1 more source

Torsional and flexural resonant column testing of grouted sands

Soil Dynamics and Earthquake Engineering, 2020
Abstract Torsional and flexural resonant column tests were conducted on sands grouted with a fine cement and the effects of confining pressure, strain, grout water-to-cement ratio (W/C) and sand grain size and shape were evaluated. Both types of excitation were applied on a single grouted sand specimen without causing specimen failure.
V.G. Basas   +2 more
openaire   +1 more source

Resonant Column Testing Procedure for Microbial-Induced Carbonate-Precipitated Sands

Geotechnical Testing Journal, 2023
ABSTRACT One of the fundamental inputs to site response analysis is the characterization of the dynamic properties of the soil, namely the shear modulus and material damping ratio. Because of soil’s nonlinear behavior, these properties change with induced shear strains, and modulus reduction and damping (MRD) curves have been proposed to
Kyunguk Na   +2 more
openaire   +1 more source

Resonant Column Testing: The Inherent Counter EMF Effect

Geotechnical Testing Journal, 2003
Abstract The standard magnet-coil driving system in resonant column devices provides the required cyclic excitation; however, it inherently produces a counter electromotive force that opposes the motion. In this study, the resonant column is modeled as an electro-mechanical system to quantitatively examine the counter electromotive ...
Wang, Yu-hsing   +2 more
openaire   +1 more source

Shear Moduli of Metal Specimens Using Resonant Column Tests

Journal of Testing and Evaluation, 2019
Abstract The shear moduli of cylindrical metal specimens were determined by performing resonant column tests in a torsional mode of vibration. The tests were performed on four different metals, namely (i) aluminum, (ii) brass, (iii) copper, and (iv) mild steel.
Jyant Kumar, Ninad Sanjeev Shinde
openaire   +1 more source

Applications of the New Approach to Resonant Column Testing

Geotechnical Testing Journal, 2015
Abstract For more than 50 years, the resonant column test has been used to measure the shear modulus and damping of soils for shear strains ranging from 10−5 % to 0.5 %. For most soils, the test is non-destructive, and tests may be performed on the same specimen at multiple confining stresses simulating in situ conditions from near ...
Drnevich, Vincent P.   +3 more
openaire   +2 more sources

Resonant Column Tests and Nonlinear Elasticity in Simulated Rocks

Rock Mechanics and Rock Engineering, 2017
Rocks are generally regarded as linearly elastic even though the manifestations of nonlinearity are prominent. The variations of elastic constants with varying strain levels and stress conditions, disagreement between static and dynamic moduli, etc., are some of the examples of nonlinear elasticity in rocks.
Resmi Sebastian, T. G. Sitharam
openaire   +1 more source

Characterization of Warm Mix Asphalt through Resonant Column Testing

Journal of Materials in Civil Engineering, 2015
As the usage of warm mix asphalt (WMA) has gained popularity in recent years, the need has arisen for more characterization techniques and performance prediction through accelerated laboratory testing. This paper presents an experimental study on the shear modulus and damping ratio of asphalt specimens prepared using three WMA technologies: Evotherm ...
Pezhouhan Tavassoti Kheiry   +2 more
openaire   +1 more source

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