Pumpable backfill grout

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United States of America Patent

PATENT NO 5294255
SERIAL NO

07949435

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A pumpable backfill grout which hardens into a controlled low strength material and an additive for making up such a backfill grout. The grout consists essentially of portland cement, a smooth surfaced vesicular expanded perlite, fly ash, fine aggregate, water, an air entraining agent, a quick dispersing thixiotropic suspending agent and a bentonite thickening agent.

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Patent Owner(s)

  • ADVANCED CONCRETE TECHNOLOGY, INC.;CHOKEL, JEFFREY D.;DACZKO, DONALD S.;GARMAN, RICHARD E.;HATCH, III, HENRY R.;HYNES, LESLIE A.;INTRUSION-PREPAKT INCORPORATED;MCCOY, JR., WILLIAM C.;QUEBEC AVENUE PROPERTIES, INC.;SPECRETE-IP INCORPORATED;TALBOTT, NELSON S.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lenczewski, Richard J Cleveland, OH 3 72
Smetana, David A Cleveland, OH 14 206
Wilson, Alfonzo L Cleveland, OH 5 78

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