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Apparatus to determine static and dynamic elastic moduli

Howarth, D. F.

Conclusions 1. The apparatus makes it possible to concurrently measureE S andE D of cylindrical rock specimens under triaxial conditions in theNX Hoek cell. 2. Accuracy of the apparatus is comparable to usual dynamic modulus testing. 3. Preliminary test results for one particular rock type, show that under triaxial conditions the differences betweenE D andE S are smaller at high confining pressures than at low confining pressures. Circumstantial evidence suggests that microcracks and microfissures are responsible for this phenomenon. Further work needs to be undertaken in other rock types to substantiate these preliminary findings.

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Apparatus to determine static and dynamic elastic moduli

Howarth, D. F.

Conclusions 1. The apparatus makes it possible to concurrently measureE S andE D of cylindrical rock specimens under triaxial conditions in theNX Hoek cell. 2. Accuracy of the apparatus is comparable to usual dynamic modulus testing. 3. Preliminary test results for one particular rock type, show that under triaxial conditions the differences betweenE D andE S are smaller at high confining pressures than at low confining pressures. Circumstantial evidence suggests that microcracks and microfissures are responsible for this phenomenon. Further work needs to be undertaken in other rock types to substantiate these preliminary findings.

Apparatus to determine static and dynamic elastic moduli

Howarth, D. F.

Conclusions 1. The apparatus makes it possible to concurrently measureE S andE D of cylindrical rock specimens under triaxial conditions in theNX Hoek cell. 2. Accuracy of the apparatus is comparable to usual dynamic modulus testing. 3. Preliminary test results for one particular rock type, show that under triaxial conditions the differences betweenE D andE S are smaller at high confining pressures than at low confining pressures. Circumstantial evidence suggests that microcracks and microfissures are responsible for this phenomenon. Further work needs to be undertaken in other rock types to substantiate these preliminary findings.

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Title:

Apparatus to determine static and dynamic elastic moduli

Contributors:

Howarth, D. F. (author)

Published in:

Rock Mechanics and Rock Engineering ; 17 ; 255-264

Publication date:

1984-10-01

Size:

10 pages

ISSN:

1434-453X , 0723-2632

DOI:

https://doi.org/10.1007/BF01032338

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Civil Engineer , Circumstantial Evidence , Rock Type , Preliminary Test , Preliminary Finding Earth Sciences , Geophysics/Geodesy , Civil Engineering

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