Why Does Concrete Settle?
There are multiple reasons why concrete settles. Some of them are poor drainage, low-quality compaction, bad site conditions, and tree roots. The most common reason is when water from gutters or rain washes away dirt from under concrete sidewalks or driveways. This creates voids or pockets underneath the concrete, which causes it to settle.
Another reason why concrete may settle is clay-rich soil. The soil expands when it’s saturated with water. Then, when the soil dries, it shrinks. This instability in the soil causes your concrete to move and sink.
Concrete Leveling Using Polyjacking