Processing additives for blended cements

Details Processing additives for blended cements Processing additives for blended cements

1989-10-06

1990-07-24

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106781, 106727, 106735, C04B 2400

Patent

active

049433237

ABSTRACT:
This invention relates to a method of enhancing the later age strength of certain blended cements. Under the process of this invention, certain blended cements, in particular those made from cement clinkers containing at least 4% C.sub.4 AF, when mixed with up to 0.2% triisopropanolamine exhibit a marked increase in 7 and 28-day compressive strengths. The blended cements of this invention contain between 5 and 60% fillers or clinker substitutes. The triisopropanolamine strength enhancing additive may be admixed with the cement powder or may be interground with the cement clinker during finish milling.

REFERENCES:
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patent: 2776901 (1957-01-01), Scripture
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patent: 2776903 (1957-01-01), Scripture
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patent: 4488910 (1984-12-01), Nicholson et al.
patent: 4519842 (1985-05-01), Gerber
patent: 4606770 (1986-08-01), Gerber
patent: 4828624 (1989-05-01), Valle

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