Novel cementitious systems and novel methods of making the same

Details Novel cementitious systems and novel methods of making the same Novel cementitious systems and novel methods of making the same

C - Chemistry, Metallurgy

04

B

C04B 7/13 (2006.01) C04B 7/12 (2006.01) C04B 28/04 (2006.01) C04B 28/18 (2006.01)

Patent

CA 2189632

Novel cementitious systems comprised of gypsum, calcined clay, and clinker consisting essentially of hydraulic calcium silicates are disclosed which have the following properties: (1) a water demand of less than about 33% nc; (2) one-day strengths of at least about 1000 psi; and (3) low alkali functionality. By increasing the amount of calcined clay, the resulting cementitious system will sequentially gain the following properties: (1) alkali non- reactiveness; (2) alkali resistance; and (3) low chloride permeability. Novel methods of preparing the novel cementitious systems of this invention are also disclosed. The novel methods not only reduce production costs by decreasing fuel and raw material consumption, but they also allow the cement producer to proactively address significant environmental concerns related to the manufacturing process.

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