**5. Conclusions**

The storage of waste composite materials and the recovery of these, it's an important problem that we have nowadays. Composite parts out of use and composite waste resulted from different production processes occupy considerable spaces for storage. The manufacturing companies can be affected by serious problems, because of the accumulation in time of these types of materials.

A solution for recycling these composite materials has been to grind these materials and create new composite products.

A new composite material obtained from recovered materials, with a complete recovery of glass fibers waste is described in this study.

The composite material for obtaining the ornamental synthetic plates consist of a mixture that forms the surface layer, that copy the mold and render the appearance of the synthetic plate, consist of 60% polyester matrix and 40% Calcium Carbonate CaCO<sup>3</sup> and a consolidation mixture consist of 40% polyester matrix, 30% sand of the 0–0.3 mm sort range, 30% grinded glass fiber waste, casted over the first mixture and maintaining in the mold until the polymerization.

The experimental properties obtained indicate a very good mechanical behavior of the new composite materials. The compressive tests indicate a high value, superior of traditional materials, like concrete.

The fracture area of the samples from glass fibers waste/polyester resin/sand composites was microscopically analyzed. A good compatibility between resin, filaments and sand, and a good impregnation of the matrix was obtained.

The new composite material contained grinded glass fiber waste, polyester matrix and sand all mixed together. After polymerization of the resin we obtain a composite material with superior mechanical properties. This material can be used in different applications, like: strengthening composite parts (ornamental garden stones, ornamental composites plates, garden furniture, additive materials and so on), polyester reinforced concrete.
