Optimization of hydraulic cement admixture waste forms for sodium-bearing, high aluminum, and high zirconium wastes

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A three-way blend of portland cement, blast furnace slag, and fly ash was successfully tested on simulated acidic high sodium, aluminum, and zirconium low-level wastes (LLW). Grout cubes were prepared at various waste loadings to maximize loading while meeting compressive strength and leach resistance requirements. For sodium LLW, a 21% waste loading achieves a volume reduction of 3.3 and a compressive strength of 2750 pounds per square inch while meeting leach, mix, and flow requirements. It was found that the sulfur in the slag reduces the chromium leach rate below regulatory limits. For aluminum LLW, a 10% waste loading achieves ... continued below

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9 p.

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Herbst, A.K. August 1, 1997.

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A three-way blend of portland cement, blast furnace slag, and fly ash was successfully tested on simulated acidic high sodium, aluminum, and zirconium low-level wastes (LLW). Grout cubes were prepared at various waste loadings to maximize loading while meeting compressive strength and leach resistance requirements. For sodium LLW, a 21% waste loading achieves a volume reduction of 3.3 and a compressive strength of 2750 pounds per square inch while meeting leach, mix, and flow requirements. It was found that the sulfur in the slag reduces the chromium leach rate below regulatory limits. For aluminum LLW, a 10% waste loading achieves a volume reduction of 8.5 and a compressive strength of 4.50 pounds per square inch while meeting leach requirements. Likewise for zirconium LLW, a 21% waste loading achieves a volume reduction of 8.3 and a compressive strength of 3570 pounds per square inch.

Physical Description

9 p.

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INIS; OSTI as DE97053243

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  • 18. annual DOE low-level radioactive waste management conference, Salt Lake City, UT (United States), 20-22 May 1997

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  • Other: DE97053243
  • Report No.: INEL/CON--97-00334
  • Report No.: CONF-970537--
  • Grant Number: AC07-94ID13223
  • Office of Scientific & Technical Information Report Number: 543667
  • Archival Resource Key: ark:/67531/metadc690000

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Office of Scientific & Technical Information Technical Reports

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  • August 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • June 14, 2016, 7 p.m.

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Herbst, A.K. Optimization of hydraulic cement admixture waste forms for sodium-bearing, high aluminum, and high zirconium wastes, article, August 1, 1997; Idaho Falls, Idaho. (digital.library.unt.edu/ark:/67531/metadc690000/: accessed December 12, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.