-retarding admixtures shall conform to ASTM C 494/C 494M, and pigments for
integrally colored concrete shall conform to ASTM C 979 and ASTM C 1017/C
1017M. Admixtures shall not contain added chlorides.
2.1.2
Aggregates
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NOTE: If a specific type or size of aggregate is
required for a desired finish, whether it be for a
facing mix or the entire thickness, the additional
requirements will be added in this paragraph.
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Aggregates shall match existing aggregates as determined by samples and
testing and shall otherwise conform to ASTM C 33.
2.1.3
Bonding Agents
Bonding agents for use in bonding concrete and mortar patching materials to
concrete and steel are specifically prohibited for use in the work.
2.1.4
Cementitious Materials
Cementitious materials shall each be of one type and from one source when
used in concrete which will have surfaces exposed in the finished
structure. Cementitious materials shall conform to one of the following:
2.1.4.1
Cement
Cement composition shall match that of cement used in existing concrete to
be repaired as determined by samples and testing and shall conform to the
basic requirements of ASTM C 150, Type [I] [II], [low alkali]. Cement
shall have non-shrink (shrinkage compensating) properties and shall conform
to ASTM C 1107, Class B or C, expansive cement type.
2.1.4.2
Pozzolan
Pozzolan shall conform to ASTM C 618, Class F, including limit on available
alkalis, "Table 2 - Supplementary Optional Chemical Requirements," and
uniformity requirements, "Table 4 - Supplementary Optional Physical
Requirements."
2.1.5
Epoxy Anchor Adhesives
An epoxy-resin grout shall be used to bond steel anchors to concrete, and
shall be a 100 percent solids, moisture insensitive, low creep, structural
adhesive. The epoxy shall conform to ASTM C 881/C 881M, type IV; grade and
class selected to conform to the manufacturer's recommendations for the
application. The epoxy adhesive shall be conditioned, proportioned, mixed,
and applied in accordance with the manufacturer's recommendations, except
as otherwise specified herein or indicated on the drawings.
2.1.6
Reinforcing Steel
Reinforcing steel shall conform to ASTM A 36/A 36M, sizes as indicated,
unless otherwise directed.
SECTION 03900
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