Setting- and hardening-accelerator containing no chloride and nitrite and a method to accelerate the setting and hardening of hydraulic binders and mixtures thereof
AssigneeSika AG, vorm. Kaspar Winkler & Co.
InventorsTheodor A. Buerge, Urs Maeder, Franz Wombacher, Beat Marazzani
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Abstract
The invention relates to a setting- and hardening-accelerator for hydraulic binders containing at least a nitrate- or sulfite component, at least a thio-cyanate component, at least an alkanolamine component and at least a carboxylic acid component, as well as a method of setting- and hardening-acceleration of hydraulic binders or mixtures containing hydraulic binders.
Claims32
A setting and hardening accelerator which comprises 1-35% of at least one alkanolamine component, 1-20% of at least one thiocyanate component, 1-25% of at least one carboxylic acid component, and 1-40% of at least one component which includes a nitrate, a sulfite or a combination of a nitrate and a sulfite.
Dependencies are inferred from the claim text.