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Settable compositions comprising interground perlite and hydraulic cement

  • US 9,376,609 B2
  • Filed: 12/30/2013
  • Issued: 06/28/2016
  • Est. Priority Date: 12/21/2010
  • Status: Active Grant
First Claim
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1. A composition consisting of:

  • an interground mixture consisting of unexpanded perlite and Portland cement,wherein the interground mixture has a mean particle size between about 0.5 microns and about 10 microns,wherein the perlite is present in an amount of about 40% to about 80% by weight of the perlite and Portland cement,wherein the Portland cement is present in an amount of about 20% to about 60% by weight of the perlite and Portland cement; and

    a hydraulic cement blended with the interground mixture.

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