Investigating the effectiveness of green and recycled concrete in the building

Recycling of building materials and materials is one of the important issues in the construction industry. The use of recycled concrete through the destruction and reuse of old concrete and green concrete with various materials has many benefits, one of which is economic savings. Approximately ۲۵ billion tons of concrete (۳.۸ tons of concrete per person) are produced in the world every year. Reducing the consumption of new aggregates extracted from the mine, reducing the area of land dedicated to concrete disposal, reducing the production of CO۲ in comparison with ordinary concrete are also among the other advantages of the recycling of building concrete aggregates, all of which are mentioned in the following research.Recycled concrete aggregates, glass waste, silica fume, etc. can usually be considered as a substitute for a part of fine or coarse aggregate, or as a substitute for the entire fine or coarse aggregate or both. Aggregates from recycled concrete mainly have higher water absorption and less resistance than natural aggregates because the resistance of the cemented mortar is less than the resistance of the aggregates than the side of the mortar on the recycled aggregates. Due to more porosity compared to granular stone, it has more water absorption. It will be In the continuation of the research, it has been tried to collect the materials obtained from the experiments conducted by the researchers and the reviewed researches.

Keywords:

Building materials , recycled concrete , green concrete , resistance