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Method for transporting a cementitious mixture to an underground space

  • US 5,322,389 A
  • Filed: 03/04/1993
  • Issued: 06/21/1994
  • Est. Priority Date: 03/04/1993
  • Status: Expired due to Term
First Claim
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1. A method for transporting a flow resistant mixture of flue-gas desulfurization sludge, fly ash, lime and water into an underground space by:

  • subjecting said mixture to high-shear mixing to temporarily render said mixture flowable;

    transporting said mixture, while still in its flowable state, into the underground space; and

    after said transporting step, permitting said mixture to react to form a cementitiously hardened product.

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