Vision-Build Joint Free Slabs
Joint Free Slabs is a patented system for slab on grade pavements constructed using an innovative method of catering for concrete shrinkage.
In traditional slabs on grade control joints are installed for this purpose. Joint Free Slabs Pty Ltd has developed a crack inducer grid that eliminates the need for all control joints. The joint free slabs crack inducer grid consists of plastic tubes and four way junctions that are assembled on site and installed on the ground, their primary purpose being to induce a closely spaced network of fine cracks throughout the entire length and breadth of the slab.
With this system vast areas of slab on grade can be constructed much faster than is possible using traditional details, and there is the potential for sizeable direct savings in both the construction cost and the construction time. Added to this, the aesthetics of the finished floor are superior and the cost of ongoing maintenance is significantly reduced. All in all, joint free slabs can be summed up in three words: better, quicker, cheaper.
Assembly and installation of the crack inducer grid is very simple and requires no special skill. Extruded plastic crack inducer tubes are supplied to each project cut to length, and these push snugly onto the moulded plastic junctions which double as bar chairs for support of the reinforcement mesh. The only on-site cutting required for the crack inducers is at penetrations and possibly some sections of the perimeter. The set-out of the grid on each project is sufficiently flexible to generally avoid the need for on-site cutting of the grid elements around the perimeter.