[wdfifteen]

Rebar is cheap. Why not use it? You need this stuff in the concrete to concrete joint.

https://www.amazon.com/dp/B004WAPFS6/ref=asc_df_B004WAPFS65252349/?tag=hyprod-20&creative=394997&creativeASIN=B004WAPFS6&linkCode=df0&hvadid=167152358566&hvpos=1o3&hvnetw=g&hvrand=4234788043120559528&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9015764&hvtargid=pla-312309124063