Light-weight autoclaved aerated concrete and preparation process thereof

The invention relates to a novel building material, and particularly relates to a light-weight autoclaved aerated concrete and a preparation process thereof. The autoclaved aerated concrete is prepared by adding a certain proportion of inorganic fiber into quartz sand, lime, cement, gypsum and aluminum powder paste as the main materials. Through adjusting the corresponding preparation process, not only is the low density of the product ensured, but also the material shrinkage rate and compressive strength are greatly improved, the defects of low strength, large shrinkage and easy cracking of the autoclaved aerated concrete are solved, and the light-weight autoclaved aerated concrete and the preparation process thereof can be widely popularized and used.