Reactive binder mixture for cementitious article
OwnerSonia NAIDU, Luc NICOLEAUinventors
Life of this patent
Estimating the term…
Abstract
A reactive binder mixture includes, based on the total dry matter, 10 to 40 wt. % hydraulic cement, 40 to 80 wt. % calcium sulphate hemihydrate, and 0.5 to 35 wt. % silica source material including a monomeric, oligomeric or polymeric silicate-based material including up to 15×106 repeating units, similar or different, of formula I: [—O—SiR13] (I) wherein each R1 is independently selected from alkyl, alkoxy, alkenyloxy, phenoxy, acetoxy, hydroxyl and a single bond.
Claims20
A reactive binder mixture, comprising, based on the total dry matter:
- 10 to 40 wt. % hydraulic cement,
- 40 to 80 wt. % calcium sulphate hemihydrate, and
- 0.5 to 35 wt. % silica source material,
- wherein said silica source material comprises monomeric, oligomeric or polymeric silicate-based material comprising up to 15×106 repeating units, similar or different, of formula I:
- [—O—SiR13] (I)
- wherein each R1 is independently selected from alkyl, alkoxy, alkenyloxy, phenoxy, acetoxy, hydroxyl and a single bond.
A cementitious article obtained from the curing of a cementitious composition comprising, based on the total dry matter, 15 to 90 wt. % of the reactive binder mixture as defined in claim 1 and 10 to 85 wt. % of fillers.
Dependencies are inferred from the claim text.