A southeastern Alberta based petro-chemical plant required a solution during a site wide turnaround that would repurpose a decades old equipment concrete base for use with a new large-scale electric motor.
The existing concrete foundation was capped with epoxy grout and supported three pieces of equipment. Both the epoxy grout cap and underlying concrete had degradation which necessitated removal. The project work scope called for a new electric motor that had a new installation height utilizing the majority of the existing concrete foundation block that was in serviceable condition.
Following removal of the old pieces of equipment, the concrete block was wire saw cut to remove the top 14” of epoxy capped concrete. Following removal of the cut-out foundation block section the concrete was surface prepared for the application of Five Star Structural Concrete ES product. A newly fabricated rebar cage was installed on top of the surface.
Final foundation rebuild procedures had the Chinook crew fabricate and install forms. The execution of the Five Star Structural Concrete ES-60 mixing and pouring utilized an 80% aggregate extension. Following a prescribed wet cure of the Structural Concrete ES-60 product, the top surface was prepared for application of Chockfast Red epoxy grout. New anchor bolt positions were cored through the Structural Concrete ES product and into the underlying old concrete base. Chinook grouting specialists installed control joint forms and the new equipment sole plates were installed with jack screws to achieve final level and alignment. A hold point was observed and verified by the end user to confirm final placement of the sole plates. Chinook crew executed the mixing and placement of the Chockfast Red epoxy grout. Following a verification of the epoxy grout cure the sole plate anchor bolt nuts were torqued to final values and the new electric motor installed for commissioning. This equipment base rebuild was completed alongside additional grouting work with our crew being on location for 32 days.