Acoustic Emission Characteristics of Sericite Schist Coarse Aggregates under Consolidated Undrained Triaxial Tests

Lan Qiang Yang; Shang Lin Qin; Hui Gao; Shan Xiong Chen

doi:10.4028/www.scientific.net/AMM.423-426.909

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 423-426Acoustic Emission Characteristics of Sericite...

Acoustic Emission Characteristics of Sericite Schist Coarse Aggregates under Consolidated Undrained Triaxial Tests

Abstract:

In order to study the acoustic emission characteristics of coarse aggregates, improved of large-scale triaxial apparatus is used to do the consolidated undrained triaxial tests of sericite schist coarse aggregates, with the acoustic emission signals monitoring. The test results show that a large number of AE signals of sericite schist coarse aggregates are generated in the initial stage. Before the axial strain reach 10%, AE counts are relatively quiet. But after 10%, they become anomalous and emerge obvious leap values. When the confining pressure up to 200kPa, AE signals are mainly generated by sliding friction. With confining pressure increasing, the proporation of rolling friction and particle breakage is more and more obvious.

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Periodical:

Applied Mechanics and Materials (Volumes 423-426)

Pages:

909-913

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.423-426.909

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Online since:

September 2013

Authors:

Lan Qiang Yang, Shang Lin Qin, Hui Gao, Shan Xiong Chen

Keywords:

Acoustic Emission (AE), Coarse Aggregate, Cu Tests, Sericite Schist

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