Pedestrian traffic pebble COBBLES AND CRUSHED STONES

Porphyry cobblestones are decorative elements with rounded shape. Usually found in rivers, they are ready for use without further processing, and are well suited for creating compact and sufficiently flat surfaces. They are used especially for paving sidewalks, lanes or courtyards. The crushing of porphyry supplies various kinds of sand and crushed stone used as ingredients in special types of concrete and mortar requiring exceptional hardness, roughness and resistance.