Resin vs grout

[Clive S]

Hi

It is shrinkage compensated, we use it for levelling machines and structures and certain bearings, it's used in a slightly different way, we install and level using jacking bolts, once level a box is built around each foot/ mount which is above floor level, the grout is then poured into the form work until it rises to just above the underside of the mount and left to set, works in that application

Yes I agree with that but you are levelling the machine first and then applying the grout to the void.

With epoxy you put a moat around the box section frame with a bridge between to two rails and pour the epoxy and then let it self level in order to get both rails on the same plane.

But it would be interesting for you to try it for the benefit of others