Previous research and analyzes from various research centers indicate the usefulness of aggregates obtained from waste in the construction materials technology, although not always their technical parameters are comparable to the properties of traditional materials made on the basis of primary raw materials. However, with a very large variety of expected technical features, these slightly lower parameters may be sufficient for use in engineering facilities. Mortars and concretes are the most popular group of materials, where aggregates obtained from waste can be used without any problems. The presented characteristics of the properties of fine aggregates, which were produced by grinding concrete and ceramic debris, as well as the fragmentation of municipal sewage sludge, in connection with the properties of cement mortars, is a clear example of this. The study has shown, that cement mortars, where natural aggregate was replaced by waste glass with the same granulation, confirmed their usefulness as mortar for building masonry, or underlays for floors. However, we can not skip the fact that it is the most inconvenient to carry out the process of fragmentation of waste to adequately fine granulation on an industrial scale. There are no difficulties to obtain aggregates with larger grains, which are used in hardening unpaved roads or as a concrete component. Obtaining finer grains of recycled aggregate becomes more challenging. Overcoming this obstacle will cause, that fine-grained aggregates obtained through the recycling of waste materials will successfully be an alternative to natural aggregates. This will contribute to the reduction of the extraction of natural sands, and thus contribute to the protection of the natural environment.