Epoxy grout has excellent adhesion properties to both concrete and steel. Epoxy grout is the only equipment setting material with the ability to resist vertical, horizontal, and axial forces.
A monolithic structure is one that operates as a whole. When epoxy grout is placed between concrete and a steel base plate, a monolithic structure is formed.
Vibration cannot jump or transfer across a cold joint in concrete.
Concrete needs to be completely hydrated which is typically 28 days with standard concrete. Concrete could be hydrated faster than 28 days but would need to be tested to verify full hydration.
Assuming the concrete is properly cured, grout can be poured after all concrete laitance is removed.
A concrete foundation should be prepared for grout by removing all laitance with a chipping hamper with a chisel bit.
All concrete should have a minimum compressive strength of 4000 psi at 28 days.
Remove all laitance with a chipping hammer.
Make sure the concrete is properly hydrated.
Be sure the concrete is free of any oil or contaminants.
Multiple concrete pours are not recommended as there will be a cold joint between pours and vibration will not transfer across a cold joint.
A high early concrete should only be used with the approval of the equipment user. Consider the use of Gill 33 for quick compressive strength and hydration.
All existing foundation contamination must be removed by removing the concrete that is contaminated prior to grouting.
The expansion joint is generally installed on top of the concrete foundation and below the base plate within the area where the epoxy grout will be poured.
When coring holes in a concrete foundation for anchor bolts, the diameter of the core should be 3 times the bolt diameter.