Aspects of Mechanical Behavior of Rock Under Static and Cyclic Loading. Part B. Mechanical Behavior of Rock Under Cyclic Loading: Fid-Bau Portal

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Aspects of Mechanical Behavior of Rock Under Static and Cyclic Loading. Part B. Mechanical Behavior of Rock Under Cyclic Loading

B. C. Haimson / R. W. Heins

S-N curves were obtained for a marble and a limestone in uniaxial compression and for two marbles in tension. The study of internal structure changes in rock subjected to uniaxial compression (acoustic emission, optical diffraction, photomicrography) revealed that cyclic fatigue is the result of a microfracturing process, consisting of grain boundary loosening in the first cycles, intragranular cracking in the following, succeeded by crack extension, coalescence, widening, fracture. Consideration of cyclic loading effects due to phenomena like earthquakes, drilling, blasting, should be incorporated in any design of underground or surface rock structures. (Author)

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Aspects of Mechanical Behavior of Rock Under Static and Cyclic Loading. Part B. Mechanical Behavior of Rock Under Cyclic Loading

B. C. Haimson / R. W. Heins

S-N curves were obtained for a marble and a limestone in uniaxial compression and for two marbles in tension. The study of internal structure changes in rock subjected to uniaxial compression (acoustic emission, optical diffraction, photomicrography) revealed that cyclic fatigue is the result of a microfracturing process, consisting of grain boundary loosening in the first cycles, intragranular cracking in the following, succeeded by crack extension, coalescence, widening, fracture. Consideration of cyclic loading effects due to phenomena like earthquakes, drilling, blasting, should be incorporated in any design of underground or surface rock structures. (Author)

Aspects of Mechanical Behavior of Rock Under Static and Cyclic Loading. Part B. Mechanical Behavior of Rock Under Cyclic Loading

B. C. Haimson / R. W. Heins

S-N curves were obtained for a marble and a limestone in uniaxial compression and for two marbles in tension. The study of internal structure changes in rock subjected to uniaxial compression (acoustic emission, optical diffraction, photomicrography) revealed that cyclic fatigue is the result of a microfracturing process, consisting of grain boundary loosening in the first cycles, intragranular cracking in the following, succeeded by crack extension, coalescence, widening, fracture. Consideration of cyclic loading effects due to phenomena like earthquakes, drilling, blasting, should be incorporated in any design of underground or surface rock structures. (Author)

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Title:

Aspects of Mechanical Behavior of Rock Under Static and Cyclic Loading. Part B. Mechanical Behavior of Rock Under Cyclic Loading

Contributors:

B. C. Haimson (author) / R. W. Heins (author)

Publication date:

1972

Size:

95 pages

Type of media:

Report

Type of material:

No indication

Language:

English

Keywords:

Geology & Geophysics , Rock(Geology) , Limestone , Mechanical properties , Loading(Mechanics) , Tensile properties , Strain(Mechanics) , Stresses , Compressive properties , Failure(Mechanics) , Test methods , Test equipment , Rock mechanics , Marble , Finite element analysis , Cyclic loads

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