Cement compositions

Details Cement compositions Cement compositions

1989-08-03

1991-12-17

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106693, 106695, 106705, 106707, 106789, C04B 714, C04B 732

Patent

active

050731971

ABSTRACT:
The advantages of high alumina cement (early strength, resistance to sulphate attack) are preserved and its disadvantage (weakens with age) is solved by mixing it 50:50 with silica fume, gasifier slag, fly ash or other pozzolanic or latently hydraulic material. This encourages formation of gehlenite octahydrate in preference to the harmful `conversion` (weakening) reaction.

REFERENCES:
patent: 1803582 (1931-05-01), Zucco
patent: 4605443 (1986-08-01), MacDowell
patent: 4961787 (1990-10-01), Majumdar et al.
F. M. Lea "The Chemistry of Cement . . . ", E. Arnold 1970, SEN 7131,2277 3, pp. 497-496, Vuillemin, The Use of Mixtures . . . , vol. CVIII, No. 18, 2 May 1936 (translation from French).
Locher, "Hydraulic Properties . . . ", 4th Intl Symp. on the Chem. of Cement, Washington, D.C. 1960, pp. 267-276.
Sugi, et al., "Fundamental Experiments . . . ", Cement Assoc. of Japan, 1976 Proc., 73-76.
Neville, "HAC Concrete", Construction Press (1975) p. 14.
Rao et al., "Mechanism of Formation of Stratlingite . . . ", Zement-Kalk-Gips, vol. 33, No. 6, 1980 pp. 292-293.
Chemical Abstracts vol. 99, 1983, p. 278, Abstract #109840u.
Chemical Abstracts vol. 66, 1967 p. 1355, Abstract #13829q.

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