A review on the fabrication and performance evaluation of autoclaved aerated concrete (AAC) blocks

Kale, Sandip M. and Bankar, Shri Prasad V. and Salunke, Ritesh V and Mohite, Rupesh D and Vipat, Akshay D (2025) A review on the fabrication and performance evaluation of autoclaved aerated concrete (AAC) blocks. World Journal of Advanced Engineering Technology and Sciences, 15 (3). 012-018. ISSN 2582-8266

Autoclaved Aerated Concrete (AAC) blocks are lightweight, precast building materials made from a mixture of cement, lime, silica (usually sand), water, and aluminum powder, which causes the material to expand and form a porous structure. The standard mix proportions typically consist of 10-15% cement, 20-30% lime, 50-60% silica, and a small amount of aluminum powder. The production process includes mixing, molding, curing using water curing, and drying. AAC blocks are tested for compressive strength, water absorption, durability, and thermal insulation. These properties make AAC blocks an ideal choice for sustainable, energy-efficient construction, offering significant advantages in terms of strength, insulation, and environmental performance. This study focuses on the fabrication of Autoclaved Aerated Concrete (AAC) blocks and aims to evaluate their properties, such as compressive strength, using a Universal Testing Machine. Additionally, the study will compare the properties of AAC blocks with those of traditional bricks to assess the sustainability of AAC blocks