I am renovating a 1920s house in Victoria and have a concrete column in the front porch.
There is a gap at the bottom of the column which I assume should be repaired in a particular way.
Currently If I give it a good push it will move a tiny bit.
See images.
My question is how should I repair the gap?
Should I use a flexible sealant (like Sikaflex FC), or should I use a mortar with no flexibility?
Thanks