Back to results
US 8,906,156 B2Granted
Cement and concrete with reinforced material
AssigneeCalera Corporation
InventorsBrent R. Constantz, Paulo J. M. Monteiro, Kyle Self, Irvin Chen
Life of this patent
Estimating the term…
Abstract
Provided are compositions, methods and systems including cementitious compositions and reinforcing materials wherein the cementitious composition comprises a metastable component.
Claims11
A method for forming a cement or concrete composition, comprising:
- combining a cementitious composition wherein the cementitious composition comprises a metastable component selected from the group consisting of vaterite, amorphous calcium carbonate, and combination thereof, with a reinforcing material wherein the reinforcing material is selected from the group consisting of aluminum, glass fiber, carbon fiber, ceramics, polymer, grass, grass product, wood product, fiber-reinforced plastic, epoxy coated rebar, titanium cladding treated rebar, chrome plated/coated rebar, nickel plated/coated rebar, cobalt-chromium coated rebar, polycarbonate reinforcing members, polycarbonate fiber, poly(vinyl chloride) (PVC) reinforcing members, PVC fiber, polypropylene, cellulose, polyvinyl alcohol, bamboo, and combination thereof, to form a cement or concrete composition;
- and
- contacting the cement composition or the concrete composition with water to cause dissolution-reprecipitation of vaterite to aragonite wherein the composition after contact with water has a wet paste pH of less than 12, and setting and hardening wherein aragonitic crystals are formed on the reinforced material.
Dependencies are inferred from the claim text.