Biomedical waste sterilization solutions for aerated concrete sector - Construction & Construction Materials

The critical stage in aerated concrete production is the process carried out in an autoclave. The aerated concrete is taken into the wagons and placed in the autoclave. They are pressure boilers in which autoclave aerated concrete bricks gain ultimate strength. Aerated concrete bricks reach their final strength at a temperature of approximately 200ºC under a vapor pressure of 16 bar. Depending on the density and size of the aerated concrete bricks, the hardening time gains strength after a processing time of about eight hours. During the hardening process, silicic acid is released from the surface of the quartz sand grains by the atmosphere of hot steam. Silicic acid binds to the binder to form hydrated lime-crystalline binder phases (CSH phases) that grow on the sand grains and bind them tightly together.