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US 11,820,710 B2Granted
Mitigation of alkali-silica reaction in concrete using readily-soluble chemical additives
AssigneesThe Regents of the University of California, Yara International Asa, Construction Research & Technology GmbH
InventorsGaurav N. Sant, Gabriel D. Falzone, Tandre Oey, Wolfram Franke, Paul Seiler, Erika Callagon La Plante
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Abstract
A manufacturing method includes: (1) incorporating at least one soluble, calcium, magnesium, or other divalent cation-containing additive into a concrete mixture including aggregates prone to alkali-silica reaction; and (2) curing the concrete mixture to form a concrete product.
Claims20
A method of manufacture, the method comprising:
- incorporating at least one water-soluble divalent cation salt-containing additive into a concrete mixture, the concrete mixture comprising aggregates prone to alkali-silica reaction;
- and
- curing the concrete mixture to form a concrete product, wherein curing the concrete mixture includes forming divalent cation-containing reaction products at an interface between the aggregates and a cementitious pore solution within the concrete mixture.
A concrete product, comprising:
- a binder;
- aggregates dispersed within the binder;
- and a calcium-containing interfacial layer at least partially covering the aggregates, wherein the calcium-containing interfacial layer comprises calcium-silicate-hydrate and calcium carbonate.
A concrete product, comprising:
- a binder;
- aggregates dispersed within the binder;
- and
- a magnesium-containing interfacial barrier at least partially covering the aggregates wherein the magnesium-containing interfacial barrier comprises magnesium-silicate-hydrate and hydrated magnesium carbonate.
1 more element
Dependencies are inferred from the claim text.