subsequent paint specified. Nonpigmented compound shall contain a fugitive
dye and shall have the reflective requirements in ASTM C 309 waived.
2.1.4.3
Burlap
Burlap
used for curing shall conform to COE CRD-C 318.
2.1.5
Water
Water for mixing and curing shall be fresh, clean, potable, and free of
injurious amounts of oil, acid, salt, or alkali, except that nonpotable
water may be used if it meets the requirements of COE CRD-C 400.
2.1.6
Nonshrink Grout
Nonshrink grout shall conform to ASTM C 1107 and shall be a commercial
formulation suitable for the application proposed.
2.2
GROUT MIXTURE PROPORTIONING
Grout mixture proportioning shall meet the following requirements.
2.2.1
Quality of Mixture
For each portion of the structure, mixture proportions shall be selected so
that the strength and water-cement ratio requirements listed in paragraph
DESIGN REQUIREMENTS are met. The source of materials and proportions of
portland cement, [pozzolan], fluidifier, fine aggregate, and water shall be
stated. The grout proportions for the preplaced-aggregate concrete shall
be determined in accordance with ASTM C 938. The grout proportions for the
preplaced-aggregate concrete shall meet the specified strength as
determined by specimens molded in accordance with ASTM C 943 and tested in
accordance with ASTM C 39/C 39M. The maximum water-cement ratios required
in paragraph MAXIMUM WATER-CEMENT RATIO (W/C) shall be converted to a ratio
by mass of water to cement plus pozzolan or GGBF slag by mass equivalency
as described in ACI 211.1. In the case where GGBF slag is used, the mass
of the slag shall be included in the equations for the term P, which is
used to denote the mass of pozzolan. If pozzolan is used in the concrete
mixture, the minimum pozzolan content shall be 15 percent of the total
cementitious material.
2.2.2
Air Content
The air content of the grout mixture as determined by ASTM C 231 within 15
minutes after mixing shall be 9.0 plus or minus 1.0 percent.
2.2.3
Grout Flow
The grout flow shall be 18.0 plus or minus 2.0 seconds when sampled from
the agitator and tested in accordance with ASTM C 939.
2.3
DESIGN REQUIREMENTS
2.3.1
Preplaced Aggregate
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NOTE: Consult the Structural Design Engineer and
the appropriate DM to fill in the blanks.
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SECTION 03372
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