## 4 Results and Discussion
### Functional Properties  
For the purpose of indirect evaluation of the uniformity of the material obtained, the hardness of all the composites was determined for both sides of the material. In this way, it was possible to acquire information if the reinforcement applied can have an influence on the properties of samples locally, in some direction or within all the composite. The first measurements pointed towards good hardness of the epoxy resin materials. In Figure 16, it can be seen that the best properties were found for the samples obtained using 30% of the filler in the form of basalt powder, which may be a result of the fact that, despite the moderate hardness of the basalt powder, its value is comparable to that of steel. However, the other side of the components had significantly worse properties. This effect may have been caused by sedimentation of the powder filler during the resin cross-linking process, which in consequence led to formation of a concentrated filler layer on one side of the material. Slightly lower hardness, up to 95 N/mm\({}^{2}\), was found for the samples with an addition of basalt fibre. The use of double-sided reinforcement with non-oriented basalt fibres gave materials with similar properties on both sides--possibly as a result of a uniform fibre distribution in the composite. A modification of the epoxy resin with 20% by mass of basalt textiles caused a decrease in the hardness on both sample sides. The cause of this fitting behaviour may be associated with the fact that the fibres have a different area density of particles, spatial compression degree and hardness lower than that of powder. Thus, the high content of fibres in the composite determined such properties of the material. Figure 16: Hardness of EP (REF) sample and EP composites reinforced with basalt powder (BP), basalt fibre (BF) and basalt textile (BT). The hardness of the composites obtained from vinylester resin was comparable to the hardness of the epoxy resin-based composites. The materials enriched with basalt powder and textile had similar hardness values (Figure 16). In this case, there were no substantial differences between the two composite sides, suggesting better reproducibility of the materials. Worth noticing is the fact that the error bars in Figure 17 are a little larger than the ones presented in Figure 16. This situation confirms also worse reproducibility of the results when using the vinylester resin. This effect may be related to the density of the compositions (resin + hardener + reinforcing filling) at the time of fitting formation and their changes during cross-linking. The density of the vinylester mixes was lower than the density of the epoxy mixes, which could have facilitated the fibre and powder particle motions within the material when the mixing forces had already ceased. Friction is one the most common phenomena affecting construction materials and it has a negative impact on their structures. An analysis of Figure 18 reveals that the lowest abrasion was found for the basalt powder-reinforced composites. In consequence, a 30% reinforcement with basalt powder allowed us to produce a construction material with low abrasion reaching 180 cm\({}^{3}\)/m and hardness at a level of 120 MPa, when using both epoxy resin and vinylester resin. It can be concluded that the use of basalt textile does not change the epoxy resin predisposition to abrasion and, in the case of vinylester resin, it makes it slightly worse. In turn, the use of chopped fibre leads to an opposite effect on both resins, i.e., it reduces the abrasion of the epoxy resin and increases it in the vinylester resin. An explanation of this effect may be a different dampening degree of the basalt textile with an area density of 235 g/mm\({}^{2}\) by different resins; the better it is, the higher the abrasion, because the textile is completely soaked with resin and it is the hardened layer and not the textile that becomes the abrasion surface.