Composition containing a semi-ordered calcium silicate hydrate
AssigneeBASF SE
InventorsChristoph Hesse, Michael Dietzsch, Attila Dal, Maria Becker
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Abstract
A curing accelerator composition for building chemical mixtures comprises a mineral constituent and a polymeric water-soluble dispersant. The mineral constituent comprises a semi-ordered calcium silicate hydrate having an apparent crystallite size of 15 nm or less and less than 35% by weight of crystalline phases other than the semi-ordered calcium silicate hydrate. The composition displays a more pronounced accelerating effect than comparative compositions in which the mineral component comprises a calcium silicate hydrate having a higher degree of crystallinity.
Claims17
A composition, comprising a mineral constituent and a polymeric water-soluble dispersant, wherein the mineral constituent comprises a semi-ordered calcium silicate hydrate having an apparent crystallite size of 15 nm or less and less than 35% by weight of crystalline phases other than the semi-ordered calcium silicate hydrate.
A process for producing a composition comprising calcium silicate hydrate, the process comprising contacting a mineral constituent with at least one water-soluble polymeric dispersant in an aqueous medium by introducing kinetic energy, where the mineral constituent comprises a semi-ordered calcium silicate hydrate having an apparent crystallite size of 15 nm or less and less than 35% by weight of crystalline phases other than the semi-ordered calcium silicate hydrate.
A composition, comprising a mineral constituent and a polymeric water-soluble dispersant, wherein the mineral constituent comprises a semi-ordered calcium silicate hydrate having an apparent crystallite size of 15 nm or less and less than 35% by weight of crystalline phases other than the semi-ordered calcium silicate hydrate;
- wherein the mineral constituent has a molar ratio of Ca to Si in the range of from 1.6 to 2.5.
Dependencies are inferred from the claim text.