Autoclaved aerated concrete (AAC, Aircrete). Autoclaved aerated concrete is a versatile lightweight construction material and usually used as blocks. Compared with normal (ie: âdenseâ concrete) aircrete has a low density and excellent insulation properties.roduction. 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.
Between 1870 and 1871 Congress passed the Enforcement Acts -- criminal codes that protected blacks' right to vote, hold office, serve on juries, and receive equal protection of laws.
ACT -- Legislation enacted into law. A bill that has passed both houses of the legislature, been enrolled, ratified, signed by the governor or passed over the governor's office, and printed. It is a permanent measure, having the force of law until repealed. 1  Local act -- Legislation enacted into law that has limited application. 2  Private act -- Legislation enacted into law that has limited application.  Public act -- Legislation enacted into law that applies to the public at large.