Cement containing activated belite
AssigneeConstruction Technology Laboratories, Inc.
InventorFulvio J. Tang
Life of this patent
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Abstract
An article of manufacture and method of manufacture of a cement product composition. A cementitious clinker consisting essentially of an alpha belite and a ferrite phase having a composition of about 0.04-0.13 moles Na.sub.2 O, 0.03-0.07 moles K.sub.2 O, 0.09-0.18 moles Fe.sub.2 O.sub.3, and 2.8 moles dicalcium silicate.
Claims21
A cementitious clinker consisting essentially of an alpha belite phase and a ferrite phase, said clinker composition consisting of about 0.04-0.13 moles Na, 0.03-0.07 moles K, 0.09-0.18 moles Fe, about 1.9 moles Ca and about 0.9 moles Si.
A method of making a clinker, the steps consisting of:
- (a) preparing a starting composition consisting of about 88-94 wt. % dicalcium silicate, about 3-5 wt. % Fe.sub.2 O.sub.3, about 1-4 wt. % Na.sub.2 O and about 1-4 wt. % K.sub.2 O;
- (b) heating said starting composition to a temperature of about 1250.degree. C.-1450.degree. C. to form said clinker;
- and
- (c) cooling said clinker to room temperature, thereby forming a clinker consisting essentially of an alpha belite phase and a ferrite phase.
A method of making a cement product, the steps consisting of:
- (a) preparing a clinker consisting essentially of alpha belite and ferrite phases and the composition consists of about 2.8-3.0 moles Ca and Si, about 0.09-0.18 moles Fe, about 0.04-0.13 moles Na, and about 0.04-0.07 moles K;
- (b) grinding said clinker;
- and
- (c) hydrating said clinker to form a cement paste product.
Dependencies are inferred from the claim text.