Recent investigations have made it possible to make concrete using agro, urban and industrial waste materials. Successful utilization of a waste material depends on its use being economically competitive with the alternate natural materials. These costs are primarily made up of handling, processing and transportation.

The stability and durability of products made of concrete using waste materials over the expected life span is of utmost importance, particularly in relation to building and structural applications. The forms in which they are used are wide and varied: they may be used as a binder material, as partial replacement of conventional Portland cements or directly as aggregates in their natural processed states.

Use of waste in concrete

• Research efforts has been done to match society's need for safe and economic disposal of waste materials.
• The use of waste materials saves natural resources and dumping spaces, and helps to maintain a clean environment.
• The current concrete construction practice is thought unsustainable because, not only it is consuming enormous quantities of stone, sand, and drinking water, but also two billion tons a year of Portland cement, which releases green-house leases leading to global warming.
• Experiments has been conducted for waste materials like- rubber Tyre, e-waste, coconut shell, blast furnace slag waste plastic, demolished constituents, waste water etc.
• Construction waste recycle plants are now installed in various countries but they are partly solution to the waste problems.