mud-jacking

mud-jacking

A process of raising a concrete slab on ground where it has settled or been depressed; a hole is drilled through the slab, then a mixture of mud and cement is pumped beneath the slab under pressure, thereby raising it.
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As to your choices, if you can find locally a contractor who does mud-jacking, see if he or she is willing to attempt it after checking the site.
Tenders are invited for Work includes approx 4,000 TN of asphaltic concrete pavement - surface; 650 TN of asphaltic concrete pavement - binder; 39,200 SY of asphaltic pavement milling; 200 SY of asphaltic concrete pavement patching; 2,700 LF of water main (directional bore and relay); 800 LF of storm sewer (relay); 3 EA of inlet and manhole replacement; 70 LF of curb and gutter mud-jacking; 3,100 LF of concrete curb and gutter (new and repair); 350 SY of concrete sidewalk and driveway repair; 82 EA of adjusting inlets and manholes; 150 SY of 8" concrete pavement; 820 CY of unclassified excavation; 1,150 TN of crushed aggregate base; 1,100 LF of pavement marking paint and symbols; white.
Then either replace the sunken portion or call a mud-jacking company to raise it.