Slab sinking

I had my driveway raised by the injection method. Very happy with the result, and it was a lot cheaper than I expected.

A couple potential issues:
- The base wasn't well compacted and now it's compacting. As long as it stops and it isn't pooling water badly or otherwise causing problems, I would just live with it. If it gets bad or otherwise starts bothering you, yes, you can have a residential paving company come out and use injection to compensate for the sinking.
- How thick is the concrete? 4" thick and you can expect a 12x13ft flag to crack. There's a reason sidewalks typically have a 4-5ft joint spacing.
- Are there any signs of water washing away the base material? If yes, you need to stop that or it likely will continue to get worse.

Sure a little uneven don't bother me. As long as it's not going to move enough to cause issues.

I have heard of polylevel something. I think foam injection that lifts concrete? Maybe cheaper than other alternatives?

Can you just live with it? It might be pretty pricey to correct.

This is existing from a previous owner

Humm I wonder how much it'll sink

Was the pad professionally graded and compacted?

You can compact the ground until you are blue in the face and you won't reach 100 % compaction. The ground will still settle! The slabs should have been pinned together to eliminate uneven heights or seperation. Good luck, it will probably keep moving.

I would assume the base was not properly prepared. What does the concrete contractor say?

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