1.5.5
Material Handling and Associated Equipment
1.5.5.1
Mixing, Transporting, and Placing Job Materials
Equipment used for mixing, transporting, placing, and confining masonry and
mortar placements shall be capable of satisfactorily mixing material and
supporting placement operations in an uninterrupted manner. Defects and
deficiencies in operation or capacity shall be resolved prior to use in the
work. Equipment used for mixing, conveying, and placing of materials shall
be clean, free of old materials and contaminants, and shall conform to the
material manufacturer's recommendations.
1.5.5.2
Associated Equipment
Associated equipment such as mixer timing equipment, valves, pressure
gauges, pressure hoses, other hardware, and tools shall be provided as
required to ensure a continuous supply of material and operation control.
1.6
SAMPLE MASONRY PANELS
Sample panels of each procedure proposed for use in the work shall be
submitted for approval. No masonry or mortar shall be used in the work
until the samples and the represented mixture have been approved.
1.7
MATERIAL REQUIREMENTS
1.7.1
Strength
Each class or mixture of mortar shall have a 28-day compressive strength
matching the compressive strength of the original existing mortar in the
structure as determined by ASTM C 109/C 109M for mortar. Test specimens of
existing mortar shall be taken from a sound and intact representative
portion of the structure, at locations indicated.
1.7.2
Special Properties
Mortar may contain admixtures, such as pigments, to match the
characteristics of the original mortar. Use of all admixtures shall be
subject to approval.
1.7.3
Cementitious Content of Mortar
Each class or mixture of mortar shall have a cement content matching the
cement content of the original existing mortar in order to provide uniform
strength, weathering characteristics, and appearance of repaired surfaces
in relation to existing surfaces.
1.8
STORAGE OF MATERIALS
Materials shall be stored in weathertight structures which will exclude
moisture and contaminants. Cement shall be furnished in suitable bags used
for packaging cements. Labeling of packages shall clearly define contents,
manufacturer, and batch identification. Detergents, masonry cleaners,
paint removers, solvents, epoxies and other chemicals used for masonry
cleaning shall be in sealed containers that legibly show the designated
name, formula or specification number, quantity, date of manufacture,
manufacturer's formulation number, manufacturer's directions including any
warnings and special precautions, and name of manufacturer. Accessories
shall be stored avoiding contamination and deterioration. Admixtures which
SECTION 04900
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