Page 134 - Machinery Component Maintenance

Machinery Foundations and Grouting 117

bonding to the anchor bolt. The exposed length of anchor bolt from the
top of the concrete to the bottom of the baseplate should be wrapped with
an appropriate sealant or weather stripping and one layer of duct tape.
Figure 3-32 illustrates this method.

Grout Forms

Forms containing epoxy grout must be of heavy-duty design because
epoxy grout is approximately 2112 times as heavy as concrete. Forming
material should be a minimum of 3/4-in. plywood, with 2 X 4 bracing. All
surfaces coming in contact with the epoxy grout should receive three
coats of wax to prevent bonding to wood. Time should be allowed for the
wax to penetrate into the wood and dry before applying the next coat
(Figure 3-33).
Forms are to have 3/4 to 10-in., 45" chamfer strips at all vertical cor-
ners and at the horizontal surface of the grout. A liquid-tight form is
made by using a room-temperature vulcanizing sealant at all joints and at
the mating surface of the foundation.

Figure 3-32. Use an appropriate seal to protect the free length of the anchor bolt from the
epoxy grout. Bolt breakage is common if not protected.