Patents Assigned to Pressbau GmbH
  • Method and device for the dry-spray application of concrete to a substrate
    Patent number: 4421797
    Abstract: A dry-spray concrete placement method in which a binder component utilizing a hydraulic, e.g. portland cement, an aggregate and water is applied to a substrate by a mixing nozzle. According to the invention, a portion of the binder component is formed by a liquid reactive resin which is activated or induced to react by a hardener component also applied with the mix.
    Type: Grant
    Filed: September 15, 1981
    Date of Patent: December 20, 1983
    Assignee: Pressbau GmbH
    Inventor: Rainer Koehne