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[Fiber reinforcement shall be fibrillated polyolefin fiber made from virgin
polypropylene meeting the requirements for Type III fibers per ASTM C 1116.][Fiber
reinforcement shall be steel deformed type meeting the requirements of ASTM
A 820, Type I or II. The aspect ratio (length divided by diameter or
equivalent diameter) of the fibers shall be between 45 and 100.] Length of
fibers shall be 40 mm (1-1/2 inch)1-1/2 inch.
2.1.6
Polymer Materials
2.1.6.1
Polymer Modifier for Concrete or Mortar
ASTM C 1438, Type II.
2.1.6.2
Polyurethane Injection Adhesive
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NOTE: Polyurethane injection adhesive is intended
for sealing non-structural cracks. Polyurethane
injection adhesive is not intended for, and should
not be used for, structural repairs.
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Two part system composed of polyurethane resin and water. Polyurethane
resin shall be 100% hydrophilic resin, capable of forming either a flexible
closed-cell foam or cured gel when mixed with water. When mixed with
water, the resin shall meet the following requirements.
Performance Criteria
Properties of the Cured Polyurethane Injection Grout
Property
Test Method
Criteria
Tensile Strength
ASTM D 1623
138 kPa (minimum)
Elongation
ASTM D 1623
400% (minimum)
Bond to Concrete (wet)
ASTM C 273
138 kPa (minimum)
Performance Criteria
Properties of the Cured Polyurethane Injection Grout
Property
Test Method
Criteria
Tensile Strength
ASTM D 1623
20 psi (minimum)
Elongation
ASTM D 1623
400% (minimum)
Bond to Concrete (wet)
ASTM C 273
20 psi (minimum)
2.1.6.3
Polyester Resin Grout
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NOTE: Polyester resin grout should not be used for
anchors installed in wet holes unless the two-step
procedure specified in paragraph ANCHORING AND
REINFORCING is used. Single stage grouting can be
accomplished with polyester resin grout by using
fast setting resin grout cartridges or capsules in
the bond zone and slower setting resin grout in the
free stressing zone.
SECTION 03931
Page 40
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