Effect of gamma irradiation on the strength of Climax stock quartz monzonite

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Description

A laboratory study was made of the effects of a massive dose of {gamma} irradiation upon the mechanical properties of Climax stock quartz monzonite. Twenty-nine cylinders of rocks were tested using the Brazilian method and 26 strain gauged cylinders were tested to failure in uniaxial compression. One-half the cylinders in each group were subjected to a {gamma} ray dose of 13.2 MGy (1.32 x 10{sup 9} rads), or six times the maximum five-year dose to rock at the Spent Fuel Test-Climax, Nevada Test Site. The irradiation treatment lowered the ultimate compressional strength and lowered Young`s modulus under uniaxial loads greater ... continued below

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27 p.

Creation Information

Durham, W.B. March 31, 1982.

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Description

A laboratory study was made of the effects of a massive dose of {gamma} irradiation upon the mechanical properties of Climax stock quartz monzonite. Twenty-nine cylinders of rocks were tested using the Brazilian method and 26 strain gauged cylinders were tested to failure in uniaxial compression. One-half the cylinders in each group were subjected to a {gamma} ray dose of 13.2 MGy (1.32 x 10{sup 9} rads), or six times the maximum five-year dose to rock at the Spent Fuel Test-Climax, Nevada Test Site. The irradiation treatment lowered the ultimate compressional strength and lowered Young`s modulus under uniaxial loads greater than 20 MPa. The treatment did not measurable affect the elastic behavior of the rock in compression, nor did it affect the Brazilian tensile strength. These trends suggest that the {gamma} irradiation lowered the threshold stress at which microfractures begin to form. The irradiation has apparently not directly induced microfracturing in the rock, so a direct degrading effect on thermal and fluid transport properties is not expected.

Physical Description

27 p.

Notes

NTIS, PC A03/MF A01; OSTI as DE86012338

Source

  • Other Information: PBD: 31 Mar 1982

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  • Other: DE86012338
  • Report No.: UCRL--87475
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/59902 | External Link
  • Office of Scientific & Technical Information Report Number: 59902
  • Archival Resource Key: ark:/67531/metadc693824

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • March 31, 1982

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 16, 2016, 6:35 p.m.

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Durham, W.B. Effect of gamma irradiation on the strength of Climax stock quartz monzonite, report, March 31, 1982; California. (digital.library.unt.edu/ark:/67531/metadc693824/: accessed October 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.