Inventors:
Eric P. Bescher - Los Angeles CA, US
Jacob W. Stremfel - Canoga Park CA, US
Grant M. Kao - Rowland Heights CA, US
John T. Salkowski - Long Beach CA, US
Walter J. Hoyle - Sparks NV, US
John Kenneth Vallens - Ladera Ranch CA, US
Edward K. Rice - Los Angeles CA, US
Assignee:
MACAEL, INC. - Los Angeles CA
International Classification:
C04B 28/06, C03C 14/00, C04B 35/10, C04B 33/135, C08K 3/34, B82Y 30/00
US Classification:
106692, 106819, 106461, 106705, 524450, 501 32, 501153, 428402, 977773
Abstract:
Microparticles having crystalline needle or rod-shaped structures of, for example, an ettringite mineral grown and attached radially from their surface. A method including nucleating and growing crystalline needles/rods from the surface of a particle in the presence of a solution of calcium, sulfur, and aluminum such as calcium sulfoaluminate, lime and calcium sulfate is described. One example is the radial growth of ettringite needles on the surface of fly ash particles in calcium sulfoaluminate-based cement paste and concrete.