Patents Assigned to RHA Technology, Inc.
  • Method for producing a blended cementitious composition
    Patent number: 6451104
    Abstract: Cementitious compositions and methods for making the compositions wherein the compositions include high volume of mineral admixtures such as fly ash and blast-furnace slag in combination with rice hull ash. In one embodiment, the cementitious composition is a blend of hydraulic cement, rice hull ash and a mineral addition selected from fly ash and blast-furnace slag. The cementitious compositions can advantageously have high early and 28-day compressive strength and a very low permeability rating.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: September 17, 2002
    Assignee: RHA Technology, Inc.
    Inventor: Povindar K. Mehta