Process for producing a hydraulic binder (ii)

Details Process for producing a hydraulic binder (ii) Process for producing a hydraulic binder (ii)

C - Chemistry, Metallurgy

04

B

C04B 28/04 (2006.01) C04B 7/02 (2006.01) C04B 22/10 (2006.01) C04B 22/14 (2006.01) C04B 28/02 (2006.01)

Patent

CA 2076868

ABSTRACT An iron complexing, pH neutral to basic compound is utilized as an activator, especially for shortening the setting times and for. increasing the early and long-term strengths, in a hydraulic binder which contains, as the additive, a soluble salt of carbonic acid. The ferrite proportion of the binder should amount to at least 4% by weight. The iron- complexing compound is to be admixed to the binder in the dry state. A hydraulic binder according to this invention contains preferably at least 3 mmol-% of an iron-complexing compound and a carbonate donor in a molar ratio, based on the iron-complexing com- pound, of between 0.3 and 4.

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