Journal ArticleDOI
The effect of water on the time-dependent deformation and fracture of a granite
TLDR
In this paper, the effect of water on the deformation, fracture and strength of Lac du Bonnet granite has been investigated through a variety of experimental techniques: standard short-term tests for compressive strength and fracture toughness, and longer-term, time dependent experiments that measure creep, static fatigue and slow crack velocity.About:
This article is published in International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts.The article was published on 1987-08-01. It has received 135 citations till now. The article focuses on the topics: Stress concentration & Compressive strength.read more
Citations
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The 2003 Canadian Geotechnical Colloquium: Mechanistic interpretation and practical application of damage and spalling prediction criteria for deep tunnelling
TL;DR: In this article, the authors used analytical and micromechanical tools to validate a simple empirical predictive model for tunnel spall initiation in hard-rock and granitoid or gneissic ground.
Journal ArticleDOI
Failure mode and weakening effect of water on sandstone
TL;DR: In this paper, triaxial compression experiments were conducted on the Berea, Boise, Darley Dale, and Gosford sandstones under nominally dry and saturated conditions at room temperature.
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Water effects on rock strength and stiffness degradation
TL;DR: In this article, the authors reviewed the terminologies commonly used to quantify the amount of water stored in rocks and reviewed the water-weakening effects on rock strengths, particularly focusing on uniaxial compressive strength and modulus, as well as tensile strength, under quasi-static loading and dynamic loading.
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Real-time computerized tomography (CT) experiments on sandstone damage evolution during triaxial compression with chemical corrosion
TL;DR: In this paper, the authors used CT images and CT values for the process of compression, micro-cracking, and dilation up to the failure of sandstone specimens under different loading levels.
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Energy monitoring and analysis during deformation of bedded-sandstone: use of acoustic emission.
TL;DR: Analysis of the mechanical behaviour and energy releasing characteristics of bedded-sandstone with bedding layers in different orientations revealed that the acoustic energy release is considerably higher in dry specimens than that of the saturated specimens at any bedding orientation, whereas specimens with steeply oriented bedding layer showed a comparatively less energy release under both dry and saturated conditions.
References
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Journal ArticleDOI
Stress corrosion theory of crack propagation with applications to geophysics
TL;DR: In this paper, the theory of stress corrosion for slow crack propagation is reviewed in the light of classical Griffith theory of fracture, and it is shown that the effect of decreasing temperature (at progressively shallower levels along the geotherm) would be to decrease the crack velocity by several orders of magnitude if other factors were equal.
Journal ArticleDOI
A simple method for studying slow crack growth.
D. P. Williams,A. G. Evans +1 more
TL;DR: In this article, a simple method for studying slow crack growth is described, which entails measurements of load relaxation at constant displacement using a double torsion specimen, and it is demonstrated that the data generated using this technique are in excellent agreement with data obtained using the more complex conventional techniques, for a range of materials - steel, titanium, glass, aluminum oxide, PMMA.
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Mechanism of creep in brittle rock
TL;DR: In this article, a review of the experimental evidence suggests that creep in brittle rock at low temperature is due to time-dependent cracking, and a transient creep law is derived from the mechanism of timedependent cracking in an inhomogeneous brittle material, described as a Markov process with a stationary transition probability that is obtained from experimental observations of static fatigue in glasses.
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Sensitivity of sandstone strength and deformability to changes in moisture content
A. B. Hawkins,B. J. McConnell +1 more