The Rehbinder Effect in Testing Saturated Carbonate Geomaterials

Author:

Riabokon Evgenii1ORCID,Turbakov Mikhail1ORCID,Kozhevnikov Evgenii1ORCID,Poplygin Vladimir1,Jing Hongwen2

Affiliation:

1. Department of Oil and Gas Technologies, Perm National Research Polytechnic University, 614990 Perm, Russia

2. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China

Abstract

Carbonate geomaterial samples were tested for uniaxial compressive strength and tensile strength under air-dried and distilled-water-wet conditions. When tested for uniaxial compression, samples saturated with distilled water showed 20% lower average strength than that of air-dried samples. In the indirect tensile (Brazilian) test, samples saturated with distilled water showed 25% lower average strength than that of dry samples. In comparison with air-dried conditions, when the geomaterial is saturated with water, the ratio of the tensile strength to the compressive strength is decreased, mainly due to the decrease in the tensile strength caused by the Rehbinder effect.

Funder

Russian Science Foundation

Publisher

MDPI AG

Subject

General Materials Science

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