**5. General Analysis**

In general, construction and demolition waste can be used in the production of concrete components, mortar, paving blocks, subfloor, and masonry in urban infrastructures such as sidewalks and curbs. These materials can also be used in the regularization and gravel of unpaved streets, as well as in the base, sub-base, and reinforcement of the pavement subgrade. The use of waste (recycled aggregates) and fly ash (binder), although there are many studies, has still been little used in the construction industry, as it requires the systematization of quality control technology, public policies, standards, and technical specifications for use on a large scale. Based on what was exposed in this review, it is possible to estimate the practical application of this waste in some segments of civil construction, as shown in Table 7.


**Table 7.** Possible to estimate the practical application.

For use in paving, some basic requirements, such as particle size composition, maximum characteristic dimension, and shape index, are necessary. For cement concretes, the minimum required control requirements are particle size composition, water absorption, and control of contaminants, such as chlorides, sulfates, and non-mineral materials.

#### **6. Conclusions**

Considering the several works published in the literature, the following considerations can be drawn:

