I had an idea to apply a layer of anchor grout under a 300x300 column base when bolting it to the slab. The purpose would be to serve the same function as expanding concrete, ensuring load distribution that minimizes point pressure.
The reason for using anchor grout is that I'll have it in the holes anyway, and it would be convenient to spread a layer of a couple of millimeters that compensates for unevenness in the plate when tightening.
Any opinions on this?