Page 151 - Machinery Component Maintenance

134 Machinery Component Maintenance and Repair

5. AFTER THE FOUNDATION HAS BEEN CHIPPED AND CLEANED,
IT SHALL BE COVERED SO AS TO PREVENT IT FROM BECOMING
CONTAMINATED WITH OIL OR DIRT.
6. FOUNDATION BOLTS SHALL BE WAXED OR COVERED WITH DUCT
SEAL OVER THEIR ENTIRE EXPOSED LENGTH. IF THE BOLTS
ARE SLEEVED. THE SLEEVES SHALL BE PACKED WITH NON-
BONDING MATERIAL TO PREVENT THE ANNULAR SPACE AROUND
THE BOLT FROM BEING FILLED WITH GROUT.
IV. PREPARATION OF BASEPLATE
1. SURFACES OF THE BASEPLATE WHICH WILL COME IN CONTACT
WITH THE GROUT SHALL BE CLEAN AND FREE OF ALL OIL,
RUST. SCALE, PAINT, AND DIRT. THIS CLEANING SHALL BE
DONE SHORTLY BEFORE THE LEVELING OF THE BASEPLATE
AND PLACEMENT OF THE GROUT.
V. FORMING
1. ALL FORMING MATERIAL COMING INTO CONTACT WITH THE
GROUT SHALL BE COATED WITH COLORED PASTE WAX -- THE
COLORING TO CONTRAST WITH THE FORMING MATERIAL COLORS.
2. FORMS SHALL BE MADE LIQUID TIGHT TO PREVENT LEAKING
OF GROUT MATERIAL. CRACKS AND OPENINGS SHALL BE
SEALED OFF WITH RAGS, COTTON BATTING, FOAM RUBBER OR
CAULKING COMPOUND.
3. CARE SHALL BE TAKEN TO PREVENT ANY WAX FROM CONTACT-
ING THE CONCRETE FOUNDATION OR THE BASEPLATE.
4. LEVELING SCREWS, IF USED. SHALL BE COATED WITH WAX,
VI. WETTING THE FOUNDATION
1. AT LEAST EIGHT (8) HOURS PRIOR TO PLACEMENT OF THE
GROUT THE CONCRETE SHALL BE WETTED WITH FRESH WATER
AND KEPT WET UP TO THE ACTUAL PLACEMENT OF THE GROUT,
2. EXCESS WATER IS TO BE REMOVED FROM THE CONCRETE JUST
PRIOR TO THE PLACEMENT OF THE GROUT.
VII. MIXING THE GROUT
1. THE MIXING EQUIPMENT SHALL BE CLEAN AND FREE OF ALL
FOREIGN MATERIAL, SCALE, MOISTURE, AND OIL.
2. THE CEMENT AND SAND FILLER SHALL BE HAND BLENDED DRY
TO FORM A HOMOGENEOUS MIXTURE.
3. FRESH WATER SHALL BE ADDED TO THE DRY MATERIALS AND
HAND BLENDED TO WET ALL THE DRY MATERIAL. WATER
QUANTITY SHALL BE THE LESSER OF THE AMOUNT SPECIFIED
BY THE CEMENT MANUFACTURER OR 50% OF THE CEMENT BY
WEIGHT.
4. THE RATE OF BLENDING SHALL PREVENT AIR ENTRAINMENT
IN THE GROUT MIXTURE.
VIII. PLACEMENT
1. A SUITABLE HEAD BOX SHALL BE PREPARED TO HYDRAULICALLY
FORCE THE GROUT INTO THE BASEPLATE CAVITIES.
2. GROUTING SHALL BE CONTINUOUS UNTIL THE PLACEMENT OF
GROUT IS COMPLETE UNDER ALL SECTIONS OR COMPARTMENTS