Effect of water on fracture of rocks under diametral compression

Geodynamics and Stress State of the Earth's Interior 2017

Kalachev, V.A.^1 ; Zaitsev, D.V.^1 ; Kochanov, A.N.^2 ; Kostandov, Yua^3 ; Panfilov, P.E.^1

Ural Federal University, Yekaterinburg, Russia^1

Academcian Melnikov Institute of Integrated Mineral Resources Development-IPKON, Russian Academy of Sciences, Moscow, Russia^2

Crimean Federal University, Simferopol, Russia^3

关键词: Brittle deformation;    Cement mixtures;    Deformation behavior;    Diametral compressions;    Effect of water;    Exposed to;    Influence of water;    Water storage;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/134/1/012023/pdf
DOI  :  10.1088/1755-1315/134/1/012023

来源: IOP

【 摘 要 】

The researchers study the effect of water on the strength of small-size specimens made of metamorphic rocks (carbonaceous quartzite, serpentine) and an analog of sedimentary rocks (sand-and-cement mixture, or artificial sandstone) exposed to diametral compression. It is found that the specimens exhibit the same brittle deformation behavior after water storage for a day. All specimens show reduced strength while quartzite and serpentine feature a decrease in deformability down to failure. Microscopic fracturing is viscoelastic and independent of water. It is suggested that the influence of water on the deformation behavior of the specimens can be explained by the Rebinder effect.