Compositions and processes for remediating hardened cementitious materials
AssigneeFMC Corporation
InventorsGary Earl Foltz, Hugh Hong Wang, David Brian Stokes, Claudio Emilio Manissero
Life of this patent
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Abstract
Compositions for controlling damage to cementitious materials as a result of alkali-silica reactions (ASR) are provided. The compositions include a lithium containing material and a surface active agent. The compositions are capable of effectively delivering lithium into a cementitious material after the composition is applied to a surface thereof. Processes for treating cementitious materials using the compositions are also provided.
Claims16
A composition for treating hardened cementitious materials to control damage to cementitious materials as a result of alkali-silica reaction (ASR), comprising at least one lithium containing material, with the proviso that said lithium containing material is not lithium silicate, and at least one surface tension reducing agent, wherein said composition delivers lithium beyond the surface of said hardened cementitious material.
A composition for treating hardened cementitious materials to control damage to cementitious materials as a result of alkali-silica reaction (ASR), comprising at least one organic or inorganic lithium salt or a mixture thereof, with the proviso that the lithium salt is not lithium silicate, and at least one anionic surfactant or a mixture thereof, wherein said composition delivers lithium beyond the surface of said hardened cementitious material.
A composition for treating hardened cementitious materials to control damage to cementitious materials as a result of alkali-silica reaction (ASR), comprising lithium nitrate and at least one anionic fluorocarbon surfactant or a mixture thereof, wherein said composition delivers lithium beyond the surface of said hardened cementitious material.
A composition for remedially treating hardened cementitious materials to control damage to cementitious materials as a result of alkali-silica reaction (ASR), comprising at least one lithium containing material, with the proviso that said lithium containing material is not lithium silicate;
- at least one surface tension reducing agent;
- and at least one agent imparting to the composition a viscosity sufficient to prevent substantial loss of the composition through cavities in the cementitious material.
Dependencies are inferred from the claim text.