Processing additives for blended cements

Details Processing additives for blended cements Processing additives for blended cements

1990-07-13

1991-05-21

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106782, 106808, C04B 702

Patent

active

050172344

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% of a higher trialkanolamine exhibit a marked increase in 7 and 28-day compressive strengths. The blended cements of this invention contain between 5 and 80% fillers or clinker substitutes. The higher trialkanolamine strength enhancing additive may be admixed with the cement powder or may be interground with the cement clinker during finish milling.

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patent: 4828624 (1989-05-01), Valle
patent: 4943323 (1990-07-01), Gartner et al.

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