An interlocking concrete paver is a pre-cast piece of concrete or brick commonly used in exterior hard- scaping applications. Interlocking paving stones are installed over a compacted stone sub-base and a leveling bed of sand. Concrete paving stones can be used for walkways, patios, pool decks and driveways and airport or loading docks.
Instead of connecting the pavers by pouring grout between the joints as one would with tiles, sand particles are spread over the pavers and tamped down. The sand stabilizes the interlocking pavers, yet allows for some flexibility. This type of pavement will absorb stress such as small earthquakes, freezes and thaws, and slight ground erosion by shifting each tile slightly. Therefore, they will not crack or buckle like concrete, though bad weather may make potholes.
The modern concrete pavers provide a design and a work of art, extremely durable, ready to use, eco friendly and economical. The interlocking characteristics of special concrete material, provide distinctive advantage over other forms of surfaces.
Standard thicknesses are 60mm (for light traffic) and 80mm (heavy traffic). Benefits of paver over asphalt and poured concrete include high compressive strengths (7000+psi as per BS and 8000+psi as per ASTM codes), pleasant look, time saving, easy removal and relaying.
Green Concretex, a leading manufacturer of Paver Blocks , has its own manufacturing unit at Rajarhat in Kolkata for commercial production and supply of Paver Blocks on a large scale.