Method for increasing the rate of compressive strength gain in h

Details Method for increasing the rate of compressive strength gain in h Method for increasing the rate of compressive strength gain in h

1995-04-24

1997-10-28

Green, Anthony

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106705, 106709, 106816, 106DIG1, 264DIG49, C04B 712, C04B 713

Patent

active

056813848

ABSTRACT:
The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction. The invention provides a method for increasing the rate of strength gain of a hardenable mixture containing fly ash by exposing the fly ash to an aqueous slurry of calcium oxide (lime) prior to its incorporation into the hardenable mixture. The invention further relates to such hardenable mixtures, e.g., concrete and mortar, that contain fly ash pre-reacted with calcium oxide. In particular, the fly ash is added to a slurry of calcium oxide in water, prior to incorporating the fly ash in a hardenable mixture. The hardenable mixture may be concrete or mortar. In a specific embodiment, mortar containing fly ash treated by exposure to an aqueous lime slurry are prepared and tested for compressive strength at early time points.

REFERENCES:
patent: 2564690 (1951-06-01), Havelin et al.
patent: 2803556 (1957-08-01), Carlsson et al.
patent: 3852084 (1974-12-01), Webster et al.
patent: 4770709 (1988-09-01), Loggers
patent: 4877453 (1989-10-01), Loggers
patent: 5435843 (1995-07-01), Roy et al.
patent: 5439518 (1995-08-01), Francis et al.
Sheu et al., 1990, Symposium Proceedings, Fly Ash and Coal Conversion By-Products: Characterization, Utilization and Disposal VI, Materials Research Society 178: 159-166 No Month.
Ravindrarajah and Tam, 1989, Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete, SP-114, American Concrete Institute, Detroit, pp. 139-155 No Month.
Ukita et al., 1989, Fly Ash, Silica Fume, Slag, and Natural Pozzolans In Concrete, SP-114, American Concrete Institute, Detroit, pp. 219-240 No Month.
ACI Committee 226, 1987, "Use of Fly Ash In Concrete," ACI 226.3R-87, ACI J. Proceedings 84:381-409 No Month.
Aitcin et al, 1986, Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete, SP-91, American Concrete Institute, Detroit, pp. 91-113 No Month.
Hemming and Berry, 1986, Symposium Proceedings, Fly Ash and Coal Conversion By-Products: Characterization, Utilization and Disposal II, Material Research Society 65:91-130 No Month.
He et al., 1984, Cement and Concrete Research 14:505-511 No Month.
Plowman, 1984, Proceedings, 2nd Int'l Conference on Ash Technology and Marketing, London, pp. 437-443 No Month.
Swamy, 1984, Proceedings, 2nd Int'l Conference on Ash Technology and Marketing, London, pp. 359-367 No Month.
Lane and Best, Jul. 1982, Concrete International Jul.:81-92.
Ravina, 1980, Cement and Concrete Research 10:573-580 No Month.

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