3.1.4
Grout Mixing Equipment
Use a high-speed, high-shear, colloidal type grout mixer capable of
continuous mechanical mixing that will produce uniform and thoroughly mixed
grout which is free of lumps and undispersed cement. The mixer shall be
equipped with a suitable water [and admixture] measuring device[s]
calibrated to read in cubic centimeterscubic feet and tenths and so
designed that after each delivery the device can be conveniently set back
to zero.
3.1.5
Joint and Crack [Cleaning] and [Sealing] Equipment
Joint and crack [cleaning] and [sealing] equipment shall meet the
requirements specified in [Section 02760 FIELD MOLDED SEALANTS FOR SEALING
JOINTS IN RIGID PAVEMENTS][Section 03151A EXPANSION, CONTRACTION AND
CONSTRUCTION JOINTS IN CONCRETE FOR CIVIL WORKS].
3.1.6
Drilling Equipment
Use percussion or rotary drilling equipment of a type suitable for the
depth, diameter and material to be drilled. Use only rotary drilling
equipment where vibration from percussion drilling could damage the
concrete to remain or adjacent structures. Use equipment capable of
maintaining the required alignment.
3.1.7
Vehicle-Mounted Breakers
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NOTE:The energy of breakers should be limited to
prevent damage to concrete and other structures
which are to remain. Verify that the stated energy
limits are appropriate for the project requirements
**************************************************************************
Use boom or vehicle mounted impact breakers, spring-action hammers or drop
balls with blow energy not exceeding approximately [205] [ ] newton-meters
([150] [ ] ft-lbs)[150] [ ] ft-lbs.
3.1.8
Hand-Held Breaker
Use 14 kg (30 pound)30 pound breaker for removal of concrete above
reinforcing steel. Use 7 kg (15 pound)15 pound chipping hammer to remove
concrete around reinforcing steel.
3.1.9
Hydromilling Equipment
Use hydromilling equipment consisting of filtering and pumping units
operating in conjunction with a remote-controlled robotic device or beam.
The equipment shall operate at a noise level of less than 90 decibels at a
distance of 15 meters (50 feet)50 feet from the equipment. The equipment
shall produce a highly roughened, bondable surface.
3.1.10
Rotary Milling Equipment
3.1.10.1
Horizontal Surfaces
Use milling equipment for horizontal surfaces consisting of a
self-propelled unit with rotary cutter head with tungsten-carbide bits.
SECTION 03931
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