Abstract. Recent research has indicated the production of numerous useful products using various industrial wastes around the world. Materials remain waste until their potential for proper use is understood. Solid waste in India has emerged as a major threat to the environmental health of the country. Sources of solid waste are industrial waste, waste from urban, agricultural, mining and other processes. Solid waste disposal is gradually becoming a burden on society, especially in densely populated regions. Nowadays, building materials are produced from various environmental wastes based on needs and availability. An overview of the production of autoclaved aerated concrete (AAC), one of the potential construction materials, was provided. AAC, a construction material, is produced using solid wastes such as fly ash, glass waste, coal ash, rice husk, slag, perlite waste, natural zeolite for its production. Efforts to utilize solid waste for the production of AAC materials were addressed in this work. The replacement of the main raw material (sand) with solid/industrial waste in the production of AAC leads towards a sustainable process. This document presents the current state of CAA production and the possible use of industrial waste for its production. Observations of a complete industrial manufacturing process of the AAC block along with benefits, applications, cost-benefit analyses, challenging issues and future scopes were highlighted. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an original essay Introduction Conservation of natural resources, environmentally friendly production, energy saving and living comfort have forced us to look for a sustainable production process for a sustainable building material. The construction sector in India is responsible for the largest share of CO2 emissions into the atmosphere [1]. Solid waste in India has emerged as a major 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 generation is due to the increase in population and consumption patterns [2]. On the other hand, clay bricks are produced using fertile soil, causing soil sterility, threat to soil erosion and also a concern for food production. A huge amount of energy is required to produce clay bricks. A large amount of fertile soil is consumed and locked into structures in the form of red clay bricks. CO 2 emissions during the production 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 regarding damage to land due to the production of red clay bricks. For a greener environment, it is recommended to replace the red clay brick with 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. Furthermore, ovens intended for heat treatment of clay bricks create air pollution and are replaced by steam-based heat treatment, so-called autoclave, in AAC production industries. This work aims to study the research carried out on the use of wastesolid/industrial as a replacement of the main raw material (sand) in the production of AAC blocks. The use of solid/industrial waste leads to a sustainable production process for building bricks instead of fired clay bricks. Observations of a complete industrial production process of AAC blocks and its cost-benefit analysis were studied. The detailed production steps of AAC, its industrial observation and cost benefit analysis for its application has rarely been presented in the past 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 plant in India was set up in the 1970s by Siporex in Pune. However, in the north-eastern part of the country, it was produced in 2014 and opened for marketing in 2015 [6]. AAC block is a completely new product in the north-eastern part of Indian subcontinent which comes under seismic zone V. AAC block is produced by adding adequate amount of aluminum powder and other additives to the slurry of fly ash or silica sand, cement , lime and water [7]. Fly ash used as aggregates in combination with silica is the waste product of power plants [4]. Aluminum powder, used as a foaming agent in the production of AAC, is responsible for making it light [6-9]. AAC blocks offer the opportunity to increase building quality at reduced costs. Recent developments in AAC production have highlighted the need to utilize industrial waste in AAC production. In the past, several researchers have studied the possibilities of using industrial waste in the production of AAC, such as using air-cooled slag instead of sand and lime, as revealed by Mostafa [10]. The use of coal bottom ash [9], 3-efflorescence sand [11] trace copper [11] and carbide slag [12] for the replacement of quartz sand in the production of AAC has also been studied. The authors [13] studied the use of different types of glassy wastes instead of sand for AAC design. 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 development, which is environmentally friendly, economical and also energy efficient. Rozycka and Pichor [14] used perlite waste as a replacement for sand for the production of AAC materials and studied 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. The AAC material conforms to being an eco-friendly material with almost negligible environmental impacts. The porosity property due to the expansion process gives this type of material many interesting characteristics/advantages to adapt well to the construction application. All the interesting features/benefits have been well described in the following subsections. Environment Friendly These CAA materials help create a green environment due to their environment friendly nature. In the AAC production process, no toxic by-products or polluting substances are developed or released into the air. Since all the ingredients used in the production of AAC blocks are inorganic in nature, they do not contain any toxic substances. Environmental pollution resulting from clay brick manufacturing activities is harmful to human health, animals and plant life. Globally, air pollution.