Antifreeze admixture for concrete

Details Antifreeze admixture for concrete Antifreeze admixture for concrete

1993-05-11

1994-03-22

Green, Anthony

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106818, 106819, 106736, 264333, 264DIG43, C04B 2214

Patent

active

052960285

ABSTRACT:
A method and composition for making concrete includes an antifreeze admixe which is added to the concrete to prevent the freezing of water in the concrete when the concrete is cured during the winter or other cold conditions. The concrete admixture includes sodium nitrate and sodium sulfate combined with one another in a predetermined ratio. In a preferred a embodiment the ratio of sodium nitrate to sodium sulfate equals 3:1. A dosage of greater than 2% by weight of cement of the above described admixture was found to significantly increase the compressive strength of concrete cast of cold (below freezing, or 0 degrees celsius) temperatures, and dosages of 6% and 8% by weight of cement of the specified admixture were found to be particularly effective.

REFERENCES:
patent: 409397 (1889-08-01), Garrell
patent: 3179528 (1965-04-01), Holmgren et al.
patent: 3891454 (1975-06-01), Cunningham et al.
patent: 3937282 (1976-02-01), Shryock et al.
patent: 4045236 (1977-08-01), Bianchi
patent: 4256500 (1981-03-01), Turpin, Jr.
patent: 5176753 (1993-01-01), Brook

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