Durability of double-shell tank waste grouts

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Description

This report summarizes results of studies conducted in FY89 to assess the durability of grouted DST waste. This is in support of WHC`s grout disposal program to determine the physical/chemical properties of simulated DST grouts cured for extended time periods at elevated temperatures. This report presents results of tests on simulated DST grout samples cured up to 6 months at 75 to 95 C. All the testing and characterization were done on a single formulation of DS slurry feed grout. The simulated waste was the same as in the Nov. 1988 pilot- scale test of grout processing. The dry blend ... continued below

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37 p.

Creation Information

Lokken, R.O.; Martin, P.F.C. & Shade, J.W. December 1, 1992.

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  • Pacific Northwest Laboratory
    Publisher Info: Pacific Northwest Lab., Richland, WA (United States)
    Place of Publication: Richland, Washington

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Description

This report summarizes results of studies conducted in FY89 to assess the durability of grouted DST waste. This is in support of WHC`s grout disposal program to determine the physical/chemical properties of simulated DST grouts cured for extended time periods at elevated temperatures. This report presents results of tests on simulated DST grout samples cured up to 6 months at 75 to 95 C. All the testing and characterization were done on a single formulation of DS slurry feed grout. The simulated waste was the same as in the Nov. 1988 pilot- scale test of grout processing. The dry blend (47 wt% slag, 47 wt% class F fly ash, 6 wt% type I/II portland cement) was mixed with the simulated waste at a mix ratio of 9 lb/gal. Resultant grout slurry was cast into molds and cured at 100% RH at 75, 85, and 95 C. Leach resistance and compressive strength decreased with curing times and temperatures. The samples absorbed water during curing (up to 9 wt%) as a result of osmotic pressures caused by the high salt content within the grout, and this may have caused microcracking and reduced strength. Cracking due to increased internal pressures from salt crystallization also may have occurred as the samples cooled from curing.

Physical Description

37 p.

Notes

INIS; OSTI as DE97003997

Source

  • Other Information: PBD: Dec 1992

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  • Other: DE97003997
  • Report No.: PNL--7835
  • Grant Number: AC06-76RL01830
  • DOI: 10.2172/479174 | External Link
  • Office of Scientific & Technical Information Report Number: 479174
  • Archival Resource Key: ark:/67531/metadc676873

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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

  • December 1, 1992

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

Description Last Updated

  • May 16, 2016, 2:09 p.m.

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Citations, Rights, Re-Use

Lokken, R.O.; Martin, P.F.C. & Shade, J.W. Durability of double-shell tank waste grouts, report, December 1, 1992; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc676873/: accessed April 27, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.