Autoclaved aerated concrete is cured in an autoclave-a large pressure vessel. In aircrete production the autoclave is normally a steel tube some 3 metres in diameter and 45 metres long.Steam is fed into the autoclave at high pressure, typically reaching a pressure of 800 kPa and a temperature of 180 AÂ°Ã¢. che pulverised flyash is usually milled to achieve adequate fineness. A small amount of anhydrite or gypsum is also often added. Autoclaved aerated concrete is quite different from dense concrete (ie: normal concrete) in both the way it is produced and in the composition of the final product.
Engineering design process. The engineering design process is a methodical series of steps that engineers use in creating functional products and processes. The process is highly iterative - parts of the process often need to be repeated many times before another can be entered - though the part(s) that get iterated and the number of such cycles in any given project may vary.
Control engineering or control systems engineering is the engineering discipline that applies control theory to design systems with desired behaviors.