Florida International University (FIU) is pursuing a business partner interested in commercializing Three Dimensional Paving. FIU inventors have developed a method for paving level surfaces that can eliminate the imperfections seen in paved residential developments, parking lots, etc. When paving contractors finish paving a lot, they usually leave humps and areas of depression. These imperfections result in water ponding and a lack of drainage, which accelerate damage to the pavement. Currently, there is no solution that can address this problem without milling and repaving with substantial surveying, engineering and reconstruction expenses. The disclosed technology is a method for implementing level pavement that starts with surveying the existing surface using LiDAR to create a 3 dimensional (3D) map and reference station of the surface. Next, using optimization techniques, a best-fit surface is developed to eliminate imperfections and promote water drainage. And lastly, the new surface is implemented using a 3D construction printer.
Current paving technology uses a screed, which is a steel plate sloped in 2 dimensions. This causes a limitation to how flat and smooth the pavement surface can be since the thickness of the material being placed in 2 dimensions can vary. The asphalt mat that comes out of the screed is perfectly level. The problem arises when the asphalt is compacted and the thicker areas compact more than the thinner areas, resulting in a deformed surface that mirrors the profile underneath the asphalt. Using a 3D printer, the proposed method applies the asphalt in a manner that, after compaction, creates a final surface that is level.
The paving technology disclosed can be used to solve the problem of imperfect pavement surface, and promote water drainage.
- Unlike current paving technology, this method allows for a level surface of asphalt to be applied after compaction.
- The method avoids the shortcomings of current paving machines that use screed.
- 3D construction printing allows pavement of small thickness to be applied.
- The asphalt placement can be precisely controlled to achieve the ideal surface.