Activated glass pozzolan

Abstract

Described herein are processes for the activation of glass pozzolan as well as the activated product. Methods of using the activated product are also described.

We claim: 
     
         1 . An activated glass pozzolan including:
 particles of activated glass including etched surfaces, microcrystalline calcium silicate hydrate (C—S—H), and calcium carbonate.   
     
     
         2 . The activated glass pozzolan of  claim 1 , wherein the glass is soda lime glass, bottle glass, plate glass, e-glass, or a combination thereof. 
     
     
         3 . The activated glass pozzolan of  claim 1 , wherein the glass is soda lime glass, bottle glass, plate glass, or e-glass. 
     
     
         4 . The activated glass pozzolan of  claim 1 , wherein the glass is at least partially recycled. 
     
     
         5 . The activated glass pozzolan of  claim 1 , wherein the glass is ground glass. 
     
     
         6 . The activated glass pozzolan of  claim 1 , wherein the particles have a diameter of about 1 μm to about 100 μm. 
     
     
         7 . The activated glass pozzolan of  claim 1 , wherein 90% of particles fall through a 45 μm screen. 
     
     
         8 . The activated glass pozzolan of  claim 1 , wherein 85% of particles fall through a 45 μm screen. 
     
     
         9 . The activated glass pozzolan of  claim 1 , wherein the particles have a 2-3 coefficient of uniformity. 
     
     
         10 . A method of forming an activated glass pozzolan, the method including:
 reacting particles of glass in an activation solution including Group IA, Group IIA, or Group VIIB metal or metal hydroxide to form the activated glass pozzolan, wherein the reacting is at an elevated pH, an elevated temperature, and an elevated pressure.   
     
     
         11 . The method of  claim 10 , wherein the metal can include sodium, potassium, calcium, magnesium, or manganese. 
     
     
         12 . The method of  claim 10 , wherein the particles of glass are soda lime glass, bottle glass, plate glass, e-glass, or a combination thereof. 
     
     
         13 . The method of  claim 10 , wherein the particles of glass are soda lime glass, bottle glass, plate glass, or e-glass. 
     
     
         14 . The method of  claim 10 , wherein the particles of glass are at least partially recycled. 
     
     
         15 . The method of  claim 10 , wherein the activated glass pozzolan is ground to a particle size of between about 1 μm and about 100 μm. 
     
     
         16 . The method of  claim 10 , wherein the elevated temperature is between about 100° C. and about 220° C. 
     
     
         17 . The method of  claim 10 , wherein the elevated pH is greater than 11. 
     
     
         18 . The method of  claim 10 , further comprising circulating the particles of glass and the activation solution. 
     
     
         19 . The method of  claim 18 , wherein the circulating is at a rate of about 10 RPM to about 500 RPM. 
     
     
         20 . The method of  claim 10 , further comprising exposing the activation solution to air.