Freeplan SLAB ON GRADE
Joints are a crucial problem for the use of the concrete surface: they can curl, spall, rock and are very difficult to repair and maintain.
The FREEPLAN 'joint-free' system eliminates saw-cut joints by controlling restrained shrinkage stresses, thanks to the high density of steel fiber reinforcement in the concrete matrix.
This technology allows Twintec to achieve large concrete floor panels of typically 12,000 to 25,000 square feet, with absolutely no saw cut joints. Twintec uses steel armored construction joint at the edge of each Freeplan slab panel. These joints will offer optimal load transfer and steel arris protection while allowing a free slab movement in both horizontal directions.
- Design is improved by the continuity of the floor. Edge and corner loads are not critical as the only joints in the slab are armored joint designed to transfer the maximum load.
- The absence of joints will enhance the flexibility in terms of building use and racking layout.
- The performance of steel fiber reinforced concrete (SFRC) increases the durability of the finished floor in terms of structural performance, but also fatigue, abrasion and impact resistance.
- Safer and faster installation: with steel fibers reinforcement, there is no need for rebar to be placed prior to the concrete works and continuous large panel pouring can be achieved - often by direct truck discharge and with the use of the Laser Screed - providing a safer working environment.
- Improved long term flatness tolerances by suppressing the curling effect of saw cut joints.
- Reduced maintenance costs and improved material handling equipment (MHE) efficiency: by eliminating saw-cut joints, the FREEPLAN system eliminates the biggest cause of problems and of ongoing maintenance of both floor and equipment. A 'joint-free' floor will also optimize the MHE efficiency and performance.