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US 11,518,715 B2Granted
Compositions and method to improve the durability of calcium silicate-based cements and concretes
AssigneeSolidia Technologies, Inc.
InventorsGuillaume Pommier, Gilles Lecomte, Bruno Huet, Martin Mosquet, Vincent Meyer, Sadananda Sahu, Ahmet Cuneyt Tas, Deepak Ravikumar, Jason Elizan Bryant, Anuj Seth
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Abstract
Calcium silicate-based cements and concretes are disclosed, which result in concrete compositions that have an increased durability. A cement product includes a plurality of particles of a carbonatable calcium silicate cement and a hydrophobic organic acid, or a salt thereof, or a silane, or a polysiloxane.
Claims8
A non-hydraulic cement comprising:
- a plurality of particles of a carbonatable calcium silicate phases, the calcium silicate comprising one or more discrete calcium silicate phase selected from CS (wollastonite or pseudowollastonite), C3S2 (rankinite), C2S (belite, larnite, bredigite), and an amorphous phase at about 30% or more by mass of the total phases;
- and
- a hydrophobic organic acid, or a salt thereof, or a silane, or a polysiloxane.
A carbonatable composition comprising:
- one or more discrete calcium silicate phases selected from CS (wollastonite or pseudowollastonite), C3S2 (rankinite), C2S (belite, larnite, bredigite), and an amorphous calcium silicate phase at about 30% or more by mass of the total phases;
- and
- calcium aluminate accounting for about 0.1% to about 2.5% by weight of the carbonatable composition, wherein elemental Ca and elemental Si are present in the composition at a molar ratio from about 0.8 to about 1.2;
- and metal oxides of Al, Fe and Mg are present in the composition at about 30% or less by mass, and
- a hydrophobic organic acid, or a salt thereof, or a silane, or a polysiloxane.
2 more elements
Dependencies are inferred from the claim text.