Liquid accelerator for the setting of concrete mixtures
First Claim
1. A liquid accelerator for setting concrete mixtures comprising an aqueous solution of potassium aluminate, potassium hydroxide and potassium carbonate wherein(a) the ratio of moles of K2 O not bound to potassium carbonate to moles of Al2 O3 is between about 1.1 and 1.4;
- (b) the content of water as a solvent is such that the ratio of moles of water to moles of Al2 O3 is between about 9.5 and 20; and
(c) the potassium carbonate content is between about 0.1 and 3.4 mole-%.
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Accused Products
Abstract
The present invention relates to liquid accelerators for the setting of concrete mixtures. These accelerators have a long shelf life even in higher concentrations than the liquid accelerators known heretofore and, within the defined concentrations, produce no precipitation. The new accelerators are characterized by containing only potassium aluminate, potassium carbonate and potassium hydroxide in a defined range. They can be used in any known hydraulic binding agents, they shorten the set time of these binding agents, and they improve the compressive strength of the products made with them.
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Citations
7 Claims
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1. A liquid accelerator for setting concrete mixtures comprising an aqueous solution of potassium aluminate, potassium hydroxide and potassium carbonate wherein
(a) the ratio of moles of K2 O not bound to potassium carbonate to moles of Al2 O3 is between about 1.1 and 1.4; -
(b) the content of water as a solvent is such that the ratio of moles of water to moles of Al2 O3 is between about 9.5 and 20; and (c) the potassium carbonate content is between about 0.1 and 3.4 mole-%. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification