What is fine milling on concrete roads?

What is fine milling?

Fine milling is an innovative, sustainable and cost-effective highway maintenance solution, extending the life of surface, or in some cases replacing the need for a new surface. The fine milling process removes old failing surfaces but then refurbishes the largely solid original concrete road beneath.

This includes levelling out the joint locations where one slab has possibly settled lower than its adjacent neighbour, causing a bump when driven on. It also increases grip by retexturing the concrete surface itself, and repairs all joints and cracks using a specialist material. We can also repair deep sections of the concrete that have entirely failed. All of the materials used are of a similar colour to new concrete so that all repairs largely match the concrete surface colouring, or will do when worn in a little, so no black bits making it look untidy.

Where will fine milling be used?

We were spending up to £1 million annually on continuously removing and replacing the very thin asphalt surfaces that have traditionally been on the top of most of our concrete roads. It gave no benefit to the road structure other than how it looked, and perhaps a little more grip, but it would last only around four to five years before it started peeling and leaving unsightly 'potholes' that looked ugly and made for a bumpy ride, these potholes generally would be too shallow for repair.

What are the advantages of fine milling?

The new process costs roughly the same as the micro asphalt, we spend more on the jointing materials so that they last longer, but save by not having to put back a new asphalt surface. Recycling of the road surface is one of the main reasons for milling a road surface. Milling is widely used for pavement and road recycling today, where the top layer is removed and ground up to be used as the aggregate in new surface. The process reduces the impact that resurfacing has on the environment.

Fine milling is a more environmentally friendly solution as it removes the need to bring in more surfacing materials.

Roadtech's video about fine milling and joint repair

Ultimately, fine milling is an innovative, sustainable and cost-effective highway maintenance solution, extending the life of surface, or in some cases replacing the need for a new surface.