The construction industry is growing rapidly and new technologies have emerged to face different difficulties in the construction industry. Among all materials used in the construction industry concrete is main material for construction purposes. Nowadays recycling of waste and industrial byproducts is gaining popularity to make concrete environment-friendly material thus this concrete is called as Green Concrete. Green concrete is an advanced topic in the history of the concrete industry. The recycling of waste and byproducts attracts an increasing interest worldwide due to the high environmental impact of the cement and concrete industries. Normal concrete is manufactured using sand and stones, but lightweight concrete can be made by using industrial by-products and hazardous solid wastes such as expanded fly ash, slag, sludge, etc. Fly ash increases concrete strength, improves sulfate resistance, decreases permeability, reduces the water ratio required, and improves the workability of the concrete. Thus, by the use of green concrete, it is possible to reduce the CO2 emission in atmosphere towards eco-friendly construction technique. Thus, green concrete is an excellent substituent of cement as it is cheaper, because it uses waste products, saving energy consumption in the production. Due to growing interest in sustainable construction, engineers and architects are motivated to choose the materials which are more sustainable.