Additive for air-entrained super plasticized concrete, concrete produced thereby and method of producing air-entrained super plasticized concrete

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United States of America Patent

PATENT NO 4328145
SERIAL NO

06088350

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Air entrained, super plasticized concrete having a maximum bubble spacing factor of 0.008 inch (ASTM Standard C 457) and a method for preparing such concrete are disclosed. The method includes the steps of adding an air entraining agent while mixing aggregates and water, adding during the mixing a small but effective quantity of a potassium salt of a fluorinated alkyl carboxylate having a high surface activity and a pH of 8-9, and then adding a super plasticizer to the resulting mix prior to placement. The air entrained concrete having the aforesaid bubble spacing factor contains a super plasticizer, a vinsol resin air entraining agent, and a potassium salt of a fluorinated alkyl carboxylate. The fluorinated alkyl carboxylate is present in an amount of one to two parts per 100 parts of the super plasticizer on a weight basis.

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Patent Owner(s)

  • W.R. GRACE & CO.-CONN.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bobrowski, Gregory S Park Ridge, IL 5 175
Connolly, James D Mt. Prospect, IL 18 199

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