If you have rotten or sunken expansion joints, Trim-a-slab is a good replacement choice. Use a pry bar and engineer Hamme to leverage the old wood joints out of place.
How to Remove Expansion Joints in a Concrete Patio - Mother
How to Remove Wood Expansion Joints in Concrete Slabs
Expansion and Crack Control Joints - SealGreen
New cement pour on patio wasn't level. Water collects by step. Is
Control joints already cracking? : r/Concrete
How to Remove Wood Expansion Joints in Concrete Slabs
How to Cut a Concrete Slab
27 Clever Concrete Patio Ideas So Your Can Entertain All Year Long
Replacing Concrete Dividers
How to Replace Wood Expansion Joints in Concrete - Mother Daughter
How much would you charge to tile this concrete slab? More info in
How much would you charge to tile this concrete slab? More info in
Expansion joint for slab against foundation : r/Concrete
How to Remove Expansion Joints in a Concrete Patio - Mother
How To Install A DIY Concrete Patio