How do the pavers interlock?
Regardless of which Calstone paver shape, color or laying pattern you choose, they are ALL interlocking paving stones. The term "interlock" comes from the friction of joint sand between paver to paver. This interlock provides pavement superiority in a multitude of ways. The pavers distribute traffic loading over a greater surface. The pavers remain flexible and can withstand minor and major movements of the native soils. Maintenance and repairs (if required) are simplified because no mortar is used in the installation process.
The basic system works like this: The pavers are placed on one inch of bedding sand over a compacted aggregate base. The thickness of the base will vary depending on its application. Pavers and sand are retained using edge restraints. Commonly used edge restraints include concrete curbing, plastic edge restraints, aluminum edge restraints, and concrete edge bond beams. The pavers are compacted into the bedding sand using a vibratory plate compactor. Sand is then swept and compacted into the joints, filling them and creating "interlock".
Upon completion of this compaction process, the area is ready for immediate use. Unlike asphalt and concrete, no curing time is required for interlocking concrete paving stones.