The hydrofracturing process is a waste disposal process in use at the Oak Ridge National Laboratory for the permanent disposal of locally generated waste solutions. This process is now being modified for use in the disposal of sludge that results from the sodium hydroxide neutralization of acid waste solutions. In this process, the sludges will be slurried in a bentonite clay suspension and mixed with a solids blend of cement and other additives. The amount of dry solids required for each liter of waste slurry will be determined from a rheogram that relates the viscosity of the slurry with the grams per liter recommended for grouts with desirable flow properties.
A description of the process and the development of rheograms are included. Data are presented on the use of chemical additives to control the flow properties of grouts.
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McDaniel, E.W., Moore, J.G. Rheological Characterization of Cementitious Grouts Used to Dispose of Intermediate-Level Radioactive Waste By Hydrofracturing at Oak Ridge National Laboratory. MRS Online Proceedings Library 6, 557–565 (1981). https://doi.org/10.1557/PROC-6-557