Summary. Recent research has indicated the manufacturing of several useful products using different industrial wastes all over the world. Materials remain as waste until their potential for proper use is understood. Solid waste in India has emerged as a big threat to the environmental health of the country. Sources of solid waste are industrial waste, waste from municipal, agricultural, mining and other processes. Solid waste disposal is gradually becoming a burden on society, especially in densely populated areas. Nowadays, construction materials are made from various environmental wastes depending on the need and availability. An overview was given on the manufacturing of autoclaved aerated concrete (AAC), one of the potential construction materials. AAC, a construction material, is manufactured using solid waste like fly ash, waste glass, coal ash, rice husk, slag, perlite waste and natural zeolite for its production . Efforts to utilize solid waste for the production of AAC materials have been addressed in this work. Replacing the main raw material (sand) with solid/industrial waste in the manufacturing of AAC leads to a sustainable process. In this article, the current status of AAC manufacturing as well as the possible use of industrial waste for its production is presented. Observations of a complete industrial manufacturing process of an AAC block along with advantages, applications, cost-benefit analysis, challenging problems and future scopes have been highlighted. Say no to plagiarism. Get Custom Essay on “Why Violent Video Games Should Not Be Banned”?Get Original EssayIntroduction Conservation of natural resources, environmentally friendly manufacturing, energy saving and comfortable living have forced to seek a sustainable manufacturing process for a sustainable building. material. The construction industry in India is responsible for the largest share of CO2 emissions into the atmosphere [1]. Solid waste in India has emerged as a big threat to the environmental health of the country. Urban India alone generates 1.5 lakh tonnes of waste per day, which is increasing by 5.2% every year. This increase in solid waste production is due to the increase in population and consumption patterns [2]. On the other hand, clay bricks are made from very fertile soils, which leads to soil infertility, threat of soil erosion and also a problem in food production. A huge amount of energy is required for the production of clay bricks. A large amount of fertile topsoil is consumed and trapped in structures in the form of red clay bricks. CO 2 emissions during the manufacture of red clay bricks have contributed significantly to global warming [3]. Air pollution and global warming have now become a global environmental problem. Nowadays, the construction industry in India has widely highlighted concerns about damage on land due to manufacturing of red clay bricks. For a greener environment, it is recommended to replace the red clay brick with an equivalent sustainable material. Autoclaved Aerated Concrete (AAC) block or lightweight aerated concrete brick has emerged as the best alternative to clay brick as a sustainable building material. In addition, ovens intended for the heat treatment of brickof clay create air pollution and are replaced by steam-based heat. treatment, called autoclave, in CAA production industries. This work aims to study the research carried out on the use of solid/industrial waste as a replacement for the main raw material (sand) in the manufacturing of AAC blocks. The use of solid/industrial waste leads to a sustainable manufacturing process of building bricks in place of clay bricks. Observations of a complete industrial manufacturing process of AAC blocks and its cost-benefit analysis were studied. The detailed manufacturing steps of AAC, its industrial observation and the cost benefit analysis of its application have rarely been presented in previous literature. History The AAC block was invented in the mid-1920s by Swedish architect Dr. John Axel Eriksson and was patented in 1924 [4, 5]. The first AAC block factory in India was established in the 1970s by Siporex in Pune. However, in the northeastern part of the country, it was produced in 2014 and opened for commercialization in 2015 [6]. AAC block is a completely new product in the north-eastern part of Indian subcontinent which lies in seismic zone V. AAC is produced by adding appropriate quantity of aluminum powder and other additives in the mud of fly ash or silica sand, cement. , lime and water [7]. Fly ash used as aggregates in combination with silica is waste from power plants [4]. Aluminum powder, used as a foaming agent in the manufacture of AAC, is responsible for its lightness [6-9]. AAC blocks offer the possibility of increasing the quality of the building at a reduced cost. Recent developments in CAA production have highlighted the need to utilize industrial waste in CAA manufacturing. In the past, several researchers have investigated the possibilities of using industrial waste in CAA production, such as using air-cooled slag instead of sand and lime, as revealed by Mostafa [10]. . The use of coal bottom ash [9], efflorescence sand [11], copper streaks [11] and carbide slag [12] have also been investigated for substitution of quartz sand in the production of 'AAC. The authors [13] studied the use of different types of glassy waste instead of sand to design CAA. The mechanical and physical properties of the final AAC product were also studied. Therefore, the use of industrial waste for the production of AAC materials leads to sustainable, environmentally friendly, economical and also energy-efficient development. Rozycka and Pichor [14] used perlite waste as a sand replacement for the production of AAC materials and investigated the main properties of the respective AAC products. Advantages of AAC Applications AAC material is a special type of concrete, which uses fly ash or sand. , lime, cement, water and a foaming agent (aluminum powder) for its manufacture. AAC material is compliant to be an environmentally friendly material with almost negligible environmental impacts. The property of porosity due to the expansion process gives many interesting characteristics/benefits to this type of material to be well suited for construction applications. All the interesting features/benefits have been well described in the following subsections. Eco-friendly Today's AAC materials help establish a green environment due to their eco-friendly nature. In the CAA production process, no toxic or polluting by-products are released and diffused into the air. Given.