Property
Test Method
Criteria
158 degrees F
Shrinkage on cure
less than 11 %
Glass Transition
ASTM D 3418
158 degrees F
Temperature (DSC)
Curing Time
ASTM D 2471
Greater than 40 minutes at 73
(100 g mass)
degrees F, with 4% cuemene
hydroperoxide
Bond Strength
ASTM C 882
Greater than 1,500 psi
b.
Initiator/Promoter System
Initiator Cuemene Hydroperoxide
78 percent
Promoter Cobalt Napthenate
6 percent
The initiator/promoter system shall be capable of providing a surface
cure time of not less than 40 minutes nor more than 3 hours at the
surface temperature of the concrete during application. The
initiator/promotor system shall be such that the gel time may be
adjusted to compensate for changes in temperature that may occur
throughout the treatment application.
2.1.7
Epoxy Resin Materials
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NOTE: The grades for ASTM C 881/C 881M and classes
for both standards are as follows:
1.
Grade 1:
Low viscosity
2.
Grade 2:
Medium viscosity
3.
Grade 3:
Non-sagging consistency
4. Class B: For use between 5 and 15 degrees C 40
and 60 degrees F.
5. Class C: For use above 15 degrees C 60 degrees F.
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NOTE: Epoxy mortars and concrete do not have thermal
characteristics compatible with portland cement
concrete. This thermal incompatibility should be
carefully considered before specifying epoxy mortar
or concrete for exterior concrete surface repairs.
**************************************************************************
Epoxy compounds for repairs shall be moisture insensitive.
2.1.7.1
Epoxy Resin Binder for Concrete and Mortar
ASTM C 881/C 881M, Type III, Grade [1] [2], Class [B] [C] without mineral
filler. [For [vertical] [and] [overhead] use ASTM C 881/C 881M, Type III,
Grade 3, Class [B] [C] with filler.]
SECTION 03931
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