Energy saving by using recycled materials

Energy efficiency is one of the issues that countries have put into their priorities to save energy and reduce their financial costs. In developing countries, waste spoils account for a large part of urban waste which, has a high cost of disposal and adverse environmental effects. The increasing volume of urban waste and materials, especially rubble from the destruction of urban buildings, has created many problems in large cities.Environmental problems caused by the non-technical disposal of this material have attracted the attention of researchers in recycling these materials. Reusing of construction waste will not only help to preserve natural resources and the environment, but also will have economic justification for using energy saving methods. On the other hand, the excessive exploitation of natural resources for construction, the production of concrete, brick and other building materials has also led to a shortage of natural materials. Recycling of existing building materials for new construction is one of the most important strategies to reduce building waste and its environmental impacts, and adds a lot of cost savings and energy which is one of the materials produced from recycled items of cellulose ultra-high-grade bricks, as well as recycled concrete from waste materials, silica grit ash, powdered coal ash and shellfish ash bird bodies. This paper, considering the importance of reducing energy consumption during the construction phase, especially the manufacturing stages, introduces several types of recycled materials and raises the importance of using them.