Naval fuel saltstone formulation change
- Du Pont de Nemours (E.I.) and Co., Aiken, SC (United States). Savannah River Plant
- Westinghouse Savannah River Co., Aiken, SC (United States)
Laboratory results support a formulation change for Naval Fuels saltstone from a cement-only waste form to a cement and Class F fly ash waste form. The recommended base formulation is waste, concentrated to a SpG of 1.35, mixed with a 1:1 ratio of Type 1 Portland cement and class F fly ash to achieve a water to cementitious materials (includes fly ash) ratio of 0.4. Due to variations in waste water chemistry, permit modifications should specify formulation ranges such that saltstone physical and chemical properties are enhanced. Operations should be based on pretesting each waste batch and adjusting the base formulation within specified ranges (ie. Draft DPSOL 247 WW-0312, ``Saltcrete Formulation Testing for Rapid Set and Excess Water.``) EP toxicity and TCLP tests are included and show comparable results for both cement-only and cement/fly ash waste forms. Heat generation due to hydration, a current problem with the cementonly formulation, is significantly reduced in the cement/fly ash mixture. In addition to the improved physical characteristics of the cement/fly ash formulation, savings of approximately 33% in raw materials cost may be obtained due to the substitution of the lower cost fly ash for cement in the Naval Fuels waste solidification process.
- Research Organization:
- Du Pont de Nemours (E.I.) and Co., Aiken, SC (United States). Savannah River Lab.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC09-76SR00001
- OSTI ID:
- 10121362
- Report Number(s):
- DPST-87-754; ON: DE93006163
- Resource Relation:
- Other Information: PBD: 19 Oct 1987
- Country of Publication:
- United States
- Language:
- English
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