Method for hardening form substances of building materials containing binding agents and autoclave for the execution of the method

  • US 4,560,346 A
  • Filed: 07/20/1984
  • Issued: 12/24/1985
  • Est. Priority Date: 07/22/1983
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for hardening form substance of building material containing binding agents inside a pressure chamber of an autoclave, comprising conveying a gaseous heating medium to said autoclave, increasing the temperature of the building materials in said autoclave to a given upper limit during a heating-up phase, increasing the pressure within said autoclave above atmospheric pressure and at a pressure which precludes evaporation of water during said heating phase such as to prevent exposure of the form substances in the autoclave to evaporated wet vapor during the heating-up phase, maintaining the temperature in the autoclave at least until a given equalization temperature is reached on the inside of the form substances during a holding phase, maintaining the pressure within said autoclave above atmospheric pressure and at a pressure which precludes evaporation of the water during said holding phase such as to prevent exposure of the form substance in the autoclave to evaporated vapor during the holding phase, said steps of increasing the temperature and the pressure and maintaining the temperature and the pressure resulting in producing in said autoclave a temperature/pressure condition which precludes evaporation of water within the autoclave during said heating-up phase and said holding phase, subsequently reducing the temperature during a cooling-down phase to an expulsion temperature, and reducing the pressure in said autoclave during said cooling-down phase to atmospheric pressure, whereby the form substances are precluded from being exposed to evaported water vapor during the hardening thereof in the autoclave.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×