Accelerator
AssigneeSika Technology AG
InventorsChristian Bürge, Gilbert Mäder, Franz Wombacher
Life of this patent
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Abstract
A hardening accelerator for mineral binder compositions, in particular for cementitious binder compositions, including at least one phosphoric acid ester of a polyvalent alcohol and at least one alkali metal carbonate.
Claims11
A composition comprising at least one mineral binder and at least one hardening accelerator for mineral binders comprising at least one phosphoric acid ester of a polyhydric alcohol, at least one calcium compound, and at least one alkali metal carbonate;
- wherein the hardening accelerator is in the form of an at least two-component hardening accelerator, with the at least one calcium compound being present in a first component, while the at least one phosphoric acid ester of a polyhydric alcohol and the at least one alkali metal carbonate are present together in a second component or are present separately from one another as further individual components.
A method for reducing an influence of magnesium carbonate on accelerating admixtures, in a mineral binder composition comprising magnesium carbonate, and/or for improving an effect of an accelerating admixture in a mineral binder composition comprising magnesium carbonate, said method comprising addition of a hardening accelerator for mineral binders comprising at least one phosphoric acid ester of a polyhydric alcohol and at least one alkali metal carbonate to said mineral binder composition.
Dependencies are inferred from the claim text.