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Title: Compaction behavior of surrogate degraded emplaced WIPP waste.

Abstract

The present study results are focused on laboratory testing of surrogate waste materials. The surrogate wastes correspond to a conservative estimate of degraded Waste Isolation Pilot Plant (WIPP) containers and TRU waste materials at the end of the 10,000 year regulatory period. Testing consists of hydrostatic, triaxial, and uniaxial strain tests performed on surrogate waste recipes that were previously developed by Hansen et al. (1997). These recipes can be divided into materials that simulate 50% and 100% degraded waste by weight. The percent degradation indicates the anticipated amount of iron corrosion, as well as the decomposition of cellulosics, plastics, and rubbers (CPR). Axial, lateral, and volumetric strain and axial, lateral, and pore stress measurements were made. Two unique testing techniques were developed during the course of the experimental program. The first involves the use of dilatometry to measure sample volumetric strain under a hydrostatic condition. Bulk moduli of the samples measured using this technique were consistent with those measured using more conventional methods. The second technique involved performing triaxial tests under lateral strain control. By limiting the lateral strain to zero by controlling the applied confining pressure while loading the specimen axially in compression, one can maintain a right-circular cylindricalmore » geometry even under large deformations. This technique is preferred over standard triaxial testing methods which result in inhomogeneous deformation or (3z(Bbarreling(3y. (BManifestations of the inhomogeneous deformation included non-uniform stress states, as well as unrealistic Poisson<U+2019>s ratios (> 0.5) or those that vary significantly along the length of the specimen. Zero lateral strain controlled tests yield a more uniform stress state, and admissible and uniform values of Poisson<U+2019>s ratio.« less

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1200652
Report Number(s):
SAND2014-1897
505234
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Resource Relation:
Conference: Naples (Italy), 3-5 Jun 2014
Country of Publication:
United States
Language:
English

Citation Formats

Broome, Scott Thomas, Bronowski, David R., Kuthakun, Souvanny James, Pfeifle, Thomas W., and Herrick, Courtney Grant. Compaction behavior of surrogate degraded emplaced WIPP waste.. United States: N. p., 2014. Web. doi:10.2172/1200652.
Broome, Scott Thomas, Bronowski, David R., Kuthakun, Souvanny James, Pfeifle, Thomas W., & Herrick, Courtney Grant. Compaction behavior of surrogate degraded emplaced WIPP waste.. United States. https://doi.org/10.2172/1200652
Broome, Scott Thomas, Bronowski, David R., Kuthakun, Souvanny James, Pfeifle, Thomas W., and Herrick, Courtney Grant. 2014. "Compaction behavior of surrogate degraded emplaced WIPP waste.". United States. https://doi.org/10.2172/1200652. https://www.osti.gov/servlets/purl/1200652.
@article{osti_1200652,
title = {Compaction behavior of surrogate degraded emplaced WIPP waste.},
author = {Broome, Scott Thomas and Bronowski, David R. and Kuthakun, Souvanny James and Pfeifle, Thomas W. and Herrick, Courtney Grant},
abstractNote = {The present study results are focused on laboratory testing of surrogate waste materials. The surrogate wastes correspond to a conservative estimate of degraded Waste Isolation Pilot Plant (WIPP) containers and TRU waste materials at the end of the 10,000 year regulatory period. Testing consists of hydrostatic, triaxial, and uniaxial strain tests performed on surrogate waste recipes that were previously developed by Hansen et al. (1997). These recipes can be divided into materials that simulate 50% and 100% degraded waste by weight. The percent degradation indicates the anticipated amount of iron corrosion, as well as the decomposition of cellulosics, plastics, and rubbers (CPR). Axial, lateral, and volumetric strain and axial, lateral, and pore stress measurements were made. Two unique testing techniques were developed during the course of the experimental program. The first involves the use of dilatometry to measure sample volumetric strain under a hydrostatic condition. Bulk moduli of the samples measured using this technique were consistent with those measured using more conventional methods. The second technique involved performing triaxial tests under lateral strain control. By limiting the lateral strain to zero by controlling the applied confining pressure while loading the specimen axially in compression, one can maintain a right-circular cylindrical geometry even under large deformations. This technique is preferred over standard triaxial testing methods which result in inhomogeneous deformation or (3z(Bbarreling(3y. (BManifestations of the inhomogeneous deformation included non-uniform stress states, as well as unrealistic Poisson<U+2019>s ratios (> 0.5) or those that vary significantly along the length of the specimen. Zero lateral strain controlled tests yield a more uniform stress state, and admissible and uniform values of Poisson<U+2019>s ratio.},
doi = {10.2172/1200652},
url = {https://www.osti.gov/biblio/1200652}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Mar 01 00:00:00 EST 2014},
month = {Sat Mar 01 00:00:00 EST 2014}
}