Kuumahöyläys

Kuumahöyläys, also known as hot planing or asphalt milling, is a pavement rehabilitation technique used primarily for asphalt concrete surfaces. It involves heating the existing asphalt layer and then mechanically removing the softened material. The process is typically carried out using specialized equipment that heats the pavement to a controlled temperature, making it pliable. A milling head then scrapes away the heated asphalt to a predetermined depth.

The primary benefits of kuumahöyläys include the ability to remove surface distresses such as rutting, cracking, and oxidation without generating large amounts of waste material. The removed asphalt can often be recycled in new asphalt mixes, making it an environmentally friendly option. This method can also be more cost-effective than complete pavement removal and replacement, especially when only the top layer of asphalt needs attention.

Kuumahöyläys is a versatile technique that can be used to prepare a surface for a new asphalt overlay, to create smoother transitions at joints, or to restore proper drainage characteristics. The depth of removal can be precisely controlled, allowing for targeted rehabilitation. While effective, the process requires specialized equipment and trained operators to ensure optimal results and minimize damage to the underlying layers. The rapid heating and removal process also necessitates careful planning and execution to avoid creating thermal distress in the remaining pavement structure.