The Midwest freezing and thawing cycle is extremely damaging on pavement in Minneapolis, MN. It’s not just the temperatures that are to blame for springtime potholes. De-icing materials can compromise sealcoating and steadily break down asphalt over time. Below, we talk about some of the specific types of damage that may occur due to higher temperatures and de-icing.
Heaving occurs when water gets underneath the asphalt into the aggregate. When temperatures are cold, water freezes and forces the asphalt to heave upward. The heaving creates gaps that cause additional damage to pavement and the structures of buildings in Minneapolis, MN. Severe heaving can keep doors from opening and closing properly.
Raveling happens when pavement thaws and small holes allow water to creep in. Unsealed asphalt absorbs water very easily, similar to a sponge. The water then freezes inside the cracks. Without sealer, the water causes the aggregate mix of little stones and sand to become loose. If you have areas of loose gravel on your driveway then you probably have raveling.
Open cracks are a sign that water has seeped all the way down into asphalt and that the base underneath is very likely wet. Open cracks are formed by freezing and thawing. These small cracks can eventually evolve into potholes.
Potholes typically get immediate attention because they can bust tires and small pets can fall inside of them. Potholes are caused by ice and snow melting as part of our seasonal freezing and thawing cycle in Minneapolis, MN. Water gets into a small hole in the pavement, and as temperatures fall, that water freezes, expands, and causes the pavement to rise. As traffic flows over the raised pavement, the pavement eventually cracks, and a pothole is created.