www.dot.ca.gov/hq/esc/oe/specifications/std_specs/1995_StdSpecs/Sec95.doc

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Sec 95 book c 03-25-95
from


Sec 95 wk book b 03-15-95


SECTION 95


EPOXY


95-1  GENERAL


95-1.01   Description. These specifications are intended to specify
epoxy that will meet service requirements for highway construction.


Epoxy shall be furnished as 2 components which shall
be mixed together at the site of the work.


95-1.02   Sampling and Testing. Epoxy shall not be used prior to
sampling and testing unless its use is permitted prior to sampling and
testing in accordance with the provisions in Section 6-1.07, Certificates
of Compliance.


All tests will be conducted in accordance with the
latest test methods of the American Society for Testing and Materials,
Federal Test Method Standard No. 141, and methods in use by the Transportation
Laboratory.


95-1.03   Packaging, Labeling and Storing. Each component shall
be packaged in containers of size proportional to the amount of that
component in the mix so that one container of each component is used
in mixing one batch of epoxy.  The containers shall be of such
design that all of the contents may be readily removed, and shall be
well sealed to prevent leakage.  The containers and labeling shall
meet U.S. Department of Transportation Hazardous Material Shipping Regulations,
and the containers shall be of a material, or lined with a material,
of such character as to resist any action by the components.  Each
container shall be clearly labeled with the State Specification Number,
including authorized modifications; designation (Component A or B); type
(Standard or Rapid) if applicable; manufacturers name; date of manufacture;
batch number (a batch shall consist of a single charge of all components
in a mixing chamber); State lot number; all directions for use (as specified
elsewhere) and such warning or precautions concerning the contents as
may be required by State or Federal Laws and Regulations.  The
manufacturer of the finished epoxy components shall furnish a Certificate
of Compliance in conformance with the provisions of Section 6-1.07,
Certificates of Compliance, and a copy of the label for each material. 
The certificate shall include a list, by Title and Section, of the State
and Federal packaging and labeling laws and regulations that the manufacturer
has complied with.


Attention is directed to the characteristic of some
epoxy components to crystallize or thicken excessively prior to use
when stored at temperatures below 2°C.  Any material which shows
evidence of crystallization or a permanent increase in viscosity or
settling of pigments which cannot be readily redispersed with a paddle
shall not be used.


95-1.04   Directions for Use. At the time of mixing, components
A and B shall be at a temperature between 15°C and 30°C, unless otherwise
specified.  Any heating of the adhesive components shall be done
by application of indirect heat.  Immediately prior to mixing,
each component shall be thoroughly mixed with a paddle.  Separate
paddles shall be used to stir each component.  Immediately prior
to use, the 2 components shall be thoroughly mixed together in the specified
ratios.  When mixed, all adhesives shall have a uniform gray color
without black or white streaks.  No solvent shall be added to any
epoxy.


After mixing, all epoxies shall be placed in the work
and any overlaying or inserted material which is to be bonded to the
work by the epoxy shall also be placed before thickening of the epoxy
has begun.  Surfaces upon which epoxy is to be placed shall be
free of rust, paint, grease, asphalt, and loose and deleterious material. 
When epoxy is used as a binder to make epoxy concrete or mortar, the
2 components of epoxy shall be thoroughly mixed together before the
aggregate is added and, unless otherwise specified, the mix proportions
shall consist of one part of binder to approximately 4 parts of aggregate,
by volume.  Aggregate for use in epoxy concrete and mortar shall
be clean and shall have a moisture content of not more than 0.50-percent
when tested by California Test 226.  All surfaces against which
epoxy concrete and mortar are to be placed shall be primed with a coat
of the epoxy used just prior to placing the concrete or mortar.


95-2 TYPES OF EPOXIES


95-2.01   Binder (Adhesive), Epoxy Resin Base (State Specification 8040-01F-03).


Classification:


This specification
covers a low viscosity liquid polysulfide extended epoxy formulated
primarily for use in making high-strength epoxy concrete and epoxy mortar,
in fastening metal anchors in vertical holes in concrete and in pressure
grouting of cracks in concrete.  Thick sections of this epoxy are
not suitable for use in freeze-thaw environments.


Composition:


Component
A





 

Specifications


Parts by


Mass







Epoxy Resin 1  


 

87.00


Aliphatic Glycidyl Ether 2  


 

13.00


Titanium Dioxide  


ASTM Designation: 
D 476  


 

3.00




Component B





 
 

Parts by


Mass







Polysulfide Polymer 3  


 

44.00


2, 4, 6 - Tri
(Dimethylaminomethyl) Phenol 4  


 

10.00


Furnace Black 5  


 

0.10







1  Di glycidyl ether
of bisphenol A, viscosity, 10.0-16.0 Pa·s at 25°C; mass per epoxide equivalent,
180-200.  Color, Gardner 1933, 3 maximum.



 

2  Al