Back to results
US 2017/0283323 A1Published application
Self-Mending Composites Incorporating Encapsulated Mending Agents
AssigneeThe Government of the United States of America, as represented by the Secretary of Homeland Security
InventorsMichelle Pelletier, Arijit Bose
Life of this patent
Estimating the term…
Abstract
A cement mixture is disclosed that includes an aqueous mending agent that is disbursed within but isolated from the cement mixture, wherein the aqueous mending agent will form molecular bonds with hardened cement that is formed by the cement mixture when the mending agent is permitted to flow within the hardened cement.
Claims19
A method for self-mending a cement mixture comprising:
- disposing a plurality of microcapsules within the cement mixture, the plurality of microcapsules each containing an aqueous mending agent;
- rupturing at least one microcapsule responsive to stress applied to the cement mixture that contains the microcapsule, the rupturing resulting in the mending agent flowing to hydrolyzed cement included in the cement mixture damaged by stress;
- and
- forming a covalent bond between the hydrolyzed cement to which the stress was applied and the mending agent, to improve a property of the cement mixture by at least 10% (ten percent) relative to the cement mixture's initial strength.
1 more element
A cement mixture comprising:
- a plurality of microcapsules incorporated into the cement mixture, said microcapsules each containing an aqueous mending agent that can form a covalent bond with hydrated cement contained in the cement mixture responsive to mechanical stress that damages the hydrated cement.
Dependencies are inferred from the claim text.