Concrete
Repair / Joint Fillers / JointFil
EX80 / Technical Data
Technical Data Sheet - JointFil EX80
Product Name
Boncrete™ Joint Fil EX80
Manufacturer
Bonstone Materials Corporation
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Product Description
Boncrete™ JOINT FIL EX80 is a two-component, semi-rigid epoxy for
filling control joint in industrial concrete floors. JOINT FIL EX80 is a
heavy duty filler designed for use in compliance with ACI 302, Section 4.10
recommendations for semi-rigid epoxy joint fillers used in sawcut and control
joints
Basic Uses:
- Functional filler for control joints in concrete to support joint edges & reduce
spalling
- Industrial and commercial floors
- Interior application
- Crack filler for older floors
Features & Benefits
- Semi-rigid epoxy that allows for limited movement of concrete
- Slight
resilience helps absorb hard-wheel impact
- Suitable for filling cracks
in older floors to reduce the rate of deterioration
- Self- Leveling
Appearance:
JOINT FIL EX80 part A is a pigmented Gray color. The part B is beige
colored. A gray color, similar to concrete is obtained when part A is mixed
with part B. Boncrete™ JOINT FIL EX80 is also available on special orders
in various colors.
Limitations:
Not to be used as an expansion joint sealer. Not to be used
outdoors. Not to be used for freezer or refrigerator joints.
Technical Data
| Mixed Properties |
Values |
Test Methods |
| Mix Ratio: |
1 part Joint Fil EX80 Part A, to
1 part Joint Fil EX80 Part B, by volume |
|
| Viscosity, Part A: |
3,200 cps |
|
| Viscosity, Part B: |
6,300 cps |
|
| Pot Life @ 75°F: |
10 minutes |
|
| Cured Properties |
Values |
Test Methods |
| Cure time @ 75°F: |
within 1-3 hours |
|
| Tensile Strength: |
326 psi |
ASTM D-638 |
| Tensile Modulus: |
710 psi |
ASTM D-638 |
| Tensile Elongation at break: |
35 % |
ASTM D-638 |
| Tear Strength: |
74 lb/in. |
ASTM D-624 |
| Shore “A” Hardness: |
80-90 |
ASTM D-2240 |
| Shore “D” Hardness: |
50-60 |
ASTM D-2240 |
| Adhesion to concrete: |
400 psi |
ASTM D-4541 |
Coverage Chart
Approximate per-gallon coverage is:
| Joint size |
Per gallon |
| 1/4” wide x 2” deep joint |
40 lineal feet |
| 3/16” x 1-1/2” |
70 lineal feet |
| 1/8” x 1-1/4” |
125 lineal feet |
Installation
Surface Preparation & Use:
Use gloves, wear eye protection, and avoid skin contact. The concrete
joint must be completely dry and dust-free. All joints should be cleaned
to their full depth of 2” minimum. Open surface texture or bare
concrete is recommended for all joint facings. In filling floor cracks,
the cracks should be routed out and cleaned before filling. Mix only the
amount of epoxy which can be used in 30 minutes. Mask areas which must
be kept free of epoxy. Clean uncured epoxy from tools with toluene or
xylene. Remove cured epoxy mechanically.
Mixing instructions:
All materials should be at or above 55°F. Premix each part separately
before combining the two ingredients at the following volume ratio: one
part Boncrete™ JOINT FIL EX80 Part A to one part Boncrete™ JOINT
FIL EX80 Part B. Pour part B hardener into the part A resin and mix thoroughly
with mechanical mixer for two minutes - ingredients must be blended homogeneously
for proper cure. DO NOT hand mix.
Installation:
Boncrete™ JOINT FIL EX80 should be installed full-depth in the joint
or crack. DO NOT use backer rod.
Temperature dependency:
Temperature will affect the working properties of the material. Do not
use at a temperature below 50 °F.
Availability
Packaging and storage
JOINT FIL EX80 is available in gallon units, and 5 gallon pails. Shelf
life is approximately one year if kept in unopened cans in a dry area
at 75 °F.
Warranty
This warranty is limited to replacement of defective material and freight
charges to destination only. Bonstone Materials Corp. is not responsible
for consequential damages.
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