High strength concrete admixture
AssigneeThe Euclid Chemical Company
InventorsJohn D. Langham, III, Benjamin Veres
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Abstract
A strengthening concrete admixture for the production of high-strength concrete products is provided. The strengthening concrete admixture comprises water; a set retarder comprising a salt of gluconic acid; one or more set accelerators; one or more hardening accelerators; and at least one stabilizing agent. Incorporation of the strengthening admixture in a cement mixture enhances both early and late age strength development and allows for sustainable and more energy efficient construction practices.
Claims20
A strengthening concrete admixture for the production of high-strength concrete products comprising:
- water;
- 1 wt. % to 15 wt. % of a set retarder comprising a salt of gluconic acid;
- one or more set accelerators comprising an inorganic salt, a salt of thiocyanic acid, or mixtures thereof;
- 0.5 wt. % to 25 wt. % of one or more hardening accelerators comprising one or more of an alkanolamine and an ethylene amine;
- and
- 0.1 wt. % to 10 wt. % of at least one stabilizing agent comprising a carboxylic acid, based on a total solids content in the strengthening concrete admixture,
- wherein the set retarder, set accelerator(s), hardening accelerator(s), and stabilizing agent(s) are each chemically distinct.
A concrete mixture, comprising:
- cement;
- aggregate:
- and
- 3.5 oz/100 lbs. cement to 24 oz/100 lbs. cement of a strengthening admixture comprising:
- water;
- 1 wt. % to 15 wt. % of a set retarder comprising a salt of gluconic acid;
- one or more set accelerators comprising an inorganic salt, a salt of thiocyanic acid, or mixtures thereof;
- 0.5 wt. % to 25 wt. % of one or more hardening accelerators comprising one or more of an alkanolamine and an ethylene amine;
- and
- 0.1 wt. % to 10 wt. % of at least one stabilizing agent comprising a carboxylic acid, based on a total solids content in the strengthening concrete admixture,
- wherein the set retarder, set accelerator(s), hardening accelerator(s), and stabilizing agent(s) are each chemically distinct.
Dependencies are inferred from the claim text.