Non-metallic building materials; Composite panels of non-metallic materials for use in building; Compounds of aggregates, acrylic resins and of fillers; Mixtures of cement, sand and stone material; Articles of cement for building purposes; Articles of artificial stone for building purposes; Bricks; Tiles, not of metal; Non-metallic materials for use in paving; Render (wall coating); Plastic articles for use in building (construction); Non-metallic building elements for the damping of sound; Solid polymer and mineral combination building panels; Sand for use in sand blast cleaning; Non-metallic building materials including garnet; Garnet based products in this class