I have an 8-year old concrete slab around my pool. One slab has sunk by about 2 inches on the short side. The slab measures about 6 feet by 3 feet by 4 inches. It rests against the pool structure on the long side. The opposite long side is grass. The two short sides are separated by a 1 inch wood separator from other slabs. There is a thin "cool deck" covering of on the slab.
My question: what is the best choice of action for me to repair this?
Can I raise it to fill underneath it with sand? How? How do I prevent the slab from cracking?
Should I pour concrete on it? It will be tapering from 2 inches to 0 and probably won't stick. Also the cool deck cover gets covered by concrete.