In AAC Concrete Autoclaved, this process takes place in an autoclave, where controlled pressure (0.8-1.2 MPa) and temperature (180-200℃) allow the siliceous and calcareous substances in the green bricks to fully react and form tobermorite crystals. The formed aerated concrete product undergoes accelerated hydrothermal chemical reactions under high-pressure steam; it is this crucial step that ultimately results in a high-strength, lightweight building material with excellent thermal insulation properties.
1. Pressure and Temperature: Autoclave curing must be carried out at a pressure of 0.8-1.2 MPa and a temperature of 180-200℃.
2. Specific Parameters:
Heating Stage: 2-3 hours, heating rate 50-70℃/hour.
Constant pressure stage: Pressure 1-1.2 MPa, temperature 160-180℃, lasting 4-6 hours.
Cooling stage: Cooling to ambient pressure and temperature within 2-3 hours.
3. Process flow: Includes steps such as loading the billet into the autoclave, vacuuming, pressurizing, maintaining constant pressure, depressurizing, and unloading. Strict sealing and safe operation are required throughout the entire process.
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