Dissolve Adhesive? - Tile Advice

[talerco]

We have 12X12 tiles, 30 years old. We need to replace a few broken ones.
Years ago we removed some concrete steps with these tiles attached..and saved just in case. Now trying to remove tiles from 8 inches of concrete with tiles on top.
White adhesive maybe 1/16 thick.
I soaked in a tub of water overnight and it MIGHT have been a little easier to chip a tiny piece of the adhesive with a knife but it is not at all soft or giving.
Any ideas on what might get these loose?
Thanks!

 

[LM]

We have 12X12 tiles, 30 years old. We need to replace a few broken ones.
Years ago we removed some concrete steps with these tiles attached..and saved just in case. Now trying to remove tiles from 8 inches of concrete with tiles on top.
White adhesive maybe 1/16 thick.
I soaked in a tub of water overnight and it MIGHT have been a little easier to chip a tiny piece of the adhesive with a knife but it is not at all soft or giving.
Any ideas on what might get these loose?
Thanks!

Do you know if the tiles are porcelain or ceramic?

 

[talerco]

Do you know if the tiles are porcelain or ceramic?

Tiles are Ceramic - 12X12 inches

 

[Albert]

You should maybe use a grinder

 

[Bond]

You could try a multi-tool.

 

[talerco]

Thanks. 12 inch reach is tough. Going to try a hack saw - hopefully can get between tile and cement.
Any hope paint thinner or similar would loosen adhesive if soaked?

 

[Bond]

Reciprocating saw may help, blades available to about 9”, not going to be easy for sure.
Also , removing the grout first, will help with tile removal.