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Low density cementitious compositions

  • US 8,394,744 B2
  • Filed: 05/17/2010
  • Issued: 03/12/2013
  • Est. Priority Date: 05/22/2009
  • Status: Expired due to Fees
First Claim
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1. A manufactured cementitious binder comprising:

  • hydraulic binder in an amount in the range of from about 40 to 75% by weight of the cementitious binder;

    metakaolin in an amount of at least 3% by weight of the cementitious binder;

    silica fume in an amount up to about 15% by weight of the cementitious binder; and

    cement kiln dust in an amount of at least 10% by weight of the cementitious binder, the cement kiln dust including chlorine in an amount greater than 0.1% by weight of the cement kiln dust,the cementitious binder providing a cementitious settable composition when added with water, wherein for a density from about 12 pounds per gallon to about 11 pounds per gallon obtained without a lightweight additive, said cementitious settable composition exhibits a 24 hour compressive strength at 100 F, as hardened, of at least 700 psi.

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