Hydraulic cements comprising carbonate compound compositions
First Claim
Patent Images
1. A method, comprising:
- subjecting alkaline earth metal ion containing water comprising carbonate and/or bicarbonate ions to carbonate compound precipitation conditions adapted to produce a precipitated carbonate compound composition comprising greater than 50% carbonate compound which after combination with water, setting and hardening has a compressive strength in a range of 20-70 MPa wherein the carbonate compound precipitation conditions favor precipitation of one or more metastable carbonate compounds selected from the group consisting of aragonite, vaterite, amorphous calcium carbonate, and mixtures thereof and wherein the carbonate compound composition is a hydraulic cement composition.
2 Assignments
0 Petitions
Accused Products
Abstract
Hydraulic cement compositions that include a carbonate compound composition, e.g., a salt-water derived carbonate compound composition containing crystalline and/or amorphous carbonate compounds, are provided. Also provided are methods of making and using the hydraulic cements, as well as settable compositions, such as concretes and mortars, prepared therefrom. The cements and compositions produced therefrom find use in a variety of applications, including use in a variety of building materials and building applications.
171 Citations
18 Claims
-
1. A method, comprising:
- subjecting alkaline earth metal ion containing water comprising carbonate and/or bicarbonate ions to carbonate compound precipitation conditions adapted to produce a precipitated carbonate compound composition comprising greater than 50% carbonate compound which after combination with water, setting and hardening has a compressive strength in a range of 20-70 MPa wherein the carbonate compound precipitation conditions favor precipitation of one or more metastable carbonate compounds selected from the group consisting of aragonite, vaterite, amorphous calcium carbonate, and mixtures thereof and wherein the carbonate compound composition is a hydraulic cement composition.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
Specification