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US 12,570,577 B2Granted
Methods and compositions for inhibiting freeze-thaw damage in concrete and cement paste
AssigneeThe Regents of the University of Colorado, a body corporate
InventorsWilfred V. Srubar, III, Shane Frazier, Elizabeth A. Delesky, Jaqueline D. Wallat-Pullara
Life of this patent
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Abstract
Cement paste compositions, concrete compositions, and methods of forming the cement paste compositions and concrete compositions are disclosed. Exemplary cement paste compositions and concrete compositions include a water-soluble additive that is dissolved and is configured to perform one or more of ice recrystallization inhibition and dynamic ice shaping when the cement composition is exposed to temperatures less than or equal to a freezing temperature of water.
Claims18
A cement paste composition comprising:
- cement;
- water;
- and
- a water-soluble additive comprising a first polymer or a copolymer comprising a first polymer segment and a second polymer or a second polymer segment, wherein the first polymer and the second polymer or the first polymer segment and the second polymer segment are different, the first polymer or the first polymer segment comprising polyvinyl alcohol (PVA),
- wherein a weight ratio of the water-soluble additive to the cement is between 0.03% and 0.07%, and
- wherein the water-soluble additive in the cement composition is dissolved and is configured to perform one or more of ice recrystallization inhibition and dynamic ice shaping when the cement composition is exposed to temperatures less than or equal to a freezing temperature of water.
3 more elements
A cement paste composition comprising:
- cement;
- water;
- and
- a water-soluble additive comprising a first polymer or a copolymer comprising a first polymer segment and a second polymer or a second polymer segment, the first polymer or the first polymer segment comprising polyvinyl alcohol (PVA), the second polymer or the second polymer segment comprising polyethylene glycol (PEG),
- wherein a weight ratio of the water-soluble additive to the cement is between 0.03% and 0.07%, and
- wherein the water-soluble additive in the cement composition is dissolved and is configured to perform one or more of ice recrystallization inhibition and dynamic ice shaping when the cement composition is exposed to temperatures less than or equal to a freezing temperature of water.
3 more elements
A cement paste composition comprising:
- cement;
- water;
- and
- a water-soluble additive comprising a first polymer or a copolymer comprising a first polymer segment, the first polymer or the first polymer segment comprising polyvinyl alcohol (PVA), wherein the water-soluble additive comprises a copolymer of PVA and PEG,
- wherein a weight ratio of the water-soluble additive to the cement is between 0.03% and 0.07%, and
- wherein the water-soluble additive in the cement composition is dissolved and is configured to perform one or more of ice recrystallization inhibition and dynamic ice shaping when the cement composition is exposed to temperatures less than or equal to a freezing temperature of water.
3 more elements
A cement paste composition comprising:
- cement;
- water;
- and
- a water-soluble additive comprising a first polymer or a copolymer comprising a first polymer segment, the first polymer or the first polymer segment comprising polyvinyl alcohol (PVA), wherein the water-soluble additive can be represented by the general formula (C2H3O)n(C2H4O)m, where nom ranges from about 6:19 to about 561:1685, or about 229:687 to about 286:858,
- wherein a weight ratio of the water-soluble additive to the cement is between 0.03% and 0.07%, and
- wherein the water-soluble additive in the cement composition is dissolved and is configured to perform one or more of ice recrystallization inhibition and dynamic ice shaping when the cement composition is exposed to temperatures less than or equal to a freezing temperature of water.
3 more elements
A cement paste composition comprising:
- cement;
- water;
- and
- a water-soluble additive comprising a first polymer or a copolymer comprising a first polymer segment, the first polymer or the first polymer segment comprising polyvinyl alcohol (PVA), wherein the water-soluble additive further comprises one or more of poly(2-hydroxyethyl methacrylate) (pHEMA), poly(2-hydroxypropyl methacrylamide) (pHPMA), polyethylene glycol (PEG), and zirconium acetate,
- wherein a weight ratio of the water-soluble additive to the cement is between 0.03% and 0.07%, and
- wherein the water-soluble additive in the cement composition is dissolved and is configured to perform one or more of ice recrystallization inhibition and dynamic ice shaping when the cement composition is exposed to temperatures less than or equal to a freezing temperature of water.
3 more elements
A cement paste composition comprising:
- cement;
- water;
- and
- a water-soluble additive comprising a first polymer or a copolymer comprising a first polymer segment, the first polymer or the first polymer segment comprising polyvinyl alcohol (PVA), wherein the water-soluble additive comprises one or more of safranin-O, folic acid, gelatin, and alkylated galactose derivatives,
- wherein a weight ratio of the water-soluble additive to the cement is between 0.03% and 0.07%, and
- wherein the water-soluble additive in the cement composition is dissolved and is configured to perform one or more of ice recrystallization inhibition and dynamic ice shaping when the cement composition is exposed to temperatures less than or equal to a freezing temperature of water.
3 more elements
Dependencies are inferred from the claim text.