Get in the groove for a longer life

摘要

How long has LDG been around and why was it invented? Initially developed in the US, LDG has been used extensively throughout the country. It came to the UK for trials in early 2009. Mounting maintenance cost concerns and environmental noise on concrete roads meant that the Highways Agency and then Highways England needed to find a way to provide a cost-effective method of restoring the skid resistance to structurally sound concrete pavements without reconstruction. They had looked at applying asphalt overlays, but the problem has always been that concrete expands and contracts in a different way to asphalt, which affects the joints underneath. A traditional overlay also means you have to raise barriers, drains, kerbs, which has an impact on cost and duration of works. LDG is a treatment carried out on the concrete surface itself and doesn't involve raising the height of the surface. This makes it a straightforward long-term treatment that you can do many times over.