The accelerated structural expansion in most countries has resulted in a major problem related to providing the necessary concrete for these buildings. Besides, the buildings that have become out of service recently has posed a real problem represent
ed in demolishing them creating a large amount of hard-to-manage aggregate.
The necessity to get rid of the aggregate have opened up the possibilities for attempting to use it as a relative substitute for the natural aggregate. The research focuses on recycling these aggregate in an attempt to use them in producing concrete and other construction materials. The research deals with one of the mechanisms of benefiting from these recycled aggregate through using them in producing concrete through treating the aggregate produced from demolition, and mixing them in quantities that reflect their actual ratio. The results are of great importance economically and environmentally.
