Građevinar, Vol. 75 No. 02., 2023.
Preliminary communication
https://doi.org/10.14256/JCE.3266.2021
Deformation anisotropy of soft rock
Slobodan Živaljević
Zvonko Tomanović
Borko Miladinović
Abstract
Bedding, being a typical feature of sedimentary rocks, is a cause of inherent anisotropy of deformation properties of rock mass. Results of uniaxial and triaxial, short-term and creep tests conducted by the authors on the specimens of a soft sedimentary rock - marl are presented in this paper. Interpolation of results of the short-term tests enabled for determining the parabolic dependence of secant modulus of deformability on angle (a) between load and natural bedding planes in the interval from 0 to 90 degrees. The time-dependent deformation response is described by determining the dependence of parameters of the modified Wallner’s model on the angle a in the interval from 45 to 90 degrees, based on the results of the performed creep tests.
Keywords
soft rock, creep, anisotropy, bedding, secant modulus, triaxial, marl
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295872
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