Contraction Joints for walls
Contraction Joints for walls
(OP)
On a Concrete retaining wall, the contraction joints should it be filled with expansion joint material or left open? Could we use brick mortor instead of the expansion joint material?





RE: Contraction Joints for walls
It's important to keep rocks and other material out of an expansion joint. Otherwise, if something gets in the joint in the contracted state, it may keep the joint from easily moving as the concrete expands,causing unplanned stresses. Joint material is a good way to keep that from happening, though there are others.
RE: Contraction Joints for walls
The joint may be caulked (for appearance) if desired, but make sure the caulk that is selected can accomodate the anticipated movement without tearing.