Concrete curing composition
AssigneeLion Oil Company
InventorCharles Bryce Hutchison
Life of this patent
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Abstract
Disclosed are: (1) A composition comprising a major amount of catalytically air-blown asphalt and minor amounts of plasticizer and solvent for the asphalt; (2) a method for curing uncured concrete comprising coating the uncured concrete with the composition set forth above, then curing both the concrete with the composition; and (3) cured concrete coated with a composition comprising a major amount of catalytically air-blown asphalt and a minor amount of plasticizer.
Claims12
A method for producing a cured concrete having a non-toxic, continuous, void-free and erosion resistant coating thereon which comprises coating uncured concrete with a composition in an erosion preventive effective amount, said composition comprising a major amount of at least one catalytically air-blown asphalt having a penetration at 77.degree. F. of about 21 to 26 in tenths of millimeters and as measured by ASTM D5-73 and a softening point of about 195.degree. to about 205.degree. F., and sufficient minor amounts of at least one plasticizer and at least one solvent for the catalytically air-blown asphalt to produce a cured coating having a ductility of about 5 to 12 cm., and toxicity level of less than 18 mg/sq. inch of surface exposed under the ANSI Test.
A composition comprising a major amount of at least one catalytically air-blown asphalt having a penetration at 77.degree. F. of about 21 to 26 in tenths of millimeters and as measured by ASTM D5-73 and a softening point of from about 195.degree. to 205.degree. F. and from about 1% to 3% by weight of a plasticizer and at least one solvent for said asphalt, said solvent having an IBP of not more than about 250.degree. F. or an EBP of more than about 360.degree. F. but not more than about 450.degree. F.
Cured concrete coated with an erosion preventive effective amount of a composition comprising a major amount of at least one catalytically air-blown asphalt having a penetration at 77.degree. F. of about 21 to 26 in tenths of millimeters and as measured by ASTM D5-73 and a softening point of about 195.degree. to about 205.degree. F., and a sufficient minor amount of at least one plasticizer for said catalytically air-blown asphalt to produce a cured coating having a ductility of about 5 to 12 cm., said cured coating having a toxicity level of less than 18 milligrams per square inch of coated surface exposed under the ANSI Test.
A method for preventing erosion of concrete linings of pipes for conveying potable water by providing a non-toxic, continuous, substantially void-free and erosion resistant coating on said concrete lining which comprises coating the uncured concrete lining with a liquid solution having a viscosity in the range of about 200 to about 400 Saybolt Furol Seconds at 100.degree. F., the amount of said liquid composition coated on said concrete being sufficient to prevent erosion and inhibit blistering, said liquid composition consisting essentially of a major amount of at least one catalytically air-blown asphalt having a penetration at 77.degree. F. of about 21 to 26 in tenths of millimeters and as measured by ASTM D5-73 and a softening point of about 195.degree. to about 205.degree. F. and a minor amount of a plasticizer, both the catalytically air-blown asphalt and plasticizer being dissolved in a solvent therefor, the amount of plasticizer and solvent being sufficient to produce a cured coating having a ductility of about 5 to 12 cm., and a toxicity level of less than 18 mg/sq. inch of surface exposed under the ANSI Test.
Dependencies are inferred from the claim text.