| 32 13 73.16 |
No. 224 |
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COLD-APPLIED, LOW-MODULUS HORIZONTAL JOINT SEALANT
Description
Cold-Applied SOF-SEAL Low-Modulus
Horizontal Joint Sealant is a premium-grade, pourable, two-component,
horizontal sealant composed of a special combination of polymeric
compounds that provides outstanding performance in both Portland
cement and asphalt concrete. Once properly mixed and applied,
it cures to a soft, highly-flexible, rubber-like material that
is capable of maintaining a sealed joint or crack over a wide
temperature range. Cold-Applied SOF-SEAL does not track in the
summer and will not become brittle at temperatures as low as -20ºF
(-29ºC). It remains soft, flexible and pliable in the joint,
even after repeated freeze/thaw cycles. Cold-Applied SOF-SEAL
offers excellent elongation, high resiliency, tenacious bonding
power and excellent longevity. This self-leveling sealant requires
no special application equipment and can easily be poured into
cracks and joints.
Uses
Cold-Applied SOF-SEAL is a versatile pavement sealant
suitable for both large or small-scale sealing. It is excellent
for crack repair and preventative maintenance sealing projects.
It is ideal for use when a maintenance group doesn't have a melter,
or where it is not practical to fire-up and repeatedly move melter-applicator
units (small-scale sealing projects). Typical applications include
the sealing of expansion and contraction joints, longitudinal
joints and random cracks in concrete pavements, reflective and
random cracks in asphalt paving and asphalt-to-concrete shoulder
joints. It is also ideal for high-sheer bridge joint applications.
In addition, Cold-Applied SOF-SEAL can be used as a pitch pan
sealer.
Features and Benefits
Packaging
Two-component, Cold-Applied SOF-SEAL is packaged in convenient
3 gallon (11.36 liter) Units. The base material is furnished in
an oversized container suitable for mixing and pouring. The activator
is furnished in a bottle inserted in a plastic bag which hangs
inside the container. Both components are pre-measured to exact
quantities. Mix all materials in container; do not mix partial
units.
Coverage
7.47 gal./ft³ (1,000 liters/m³). A joint
1/2" X 1/2" (12.7mm x 12.7mm) will require 1.3 gal./100
linear feet (16 liters/100m).
Shelf Life
SOF-SEAL should be stored in a cool warehouse. Like many top-quality,
two-component sealants, SOF-SEAL has a limited (maximum 6 months)
shelf life and should be used as quickly as possible after purchase.
NOTE: Do not open pail until ready to use, as this significantly
reduces shelf life.
TECHNICAL DATA
|
Application life @ 70ºF (21ºC) Initial Cure |
45 Minutes approximately 2 hours |
|
Penetration mm/10 @ 77ºF (25ºC) @ 0ºF (-18ºC) |
140 35 |
|
Flow, cm Resilience, % |
None 90% |
|
Bond test, 3 cycles 200% extension @ -20ºF (-29ºC) Elongation, 300% @ -20ºF (-29ºC) |
Pass 3 cycles Pass 1 cycle |
Application Tools
 Electric Drill with Flat Paddle |
 Wooden Mixing Paddle |
 Jiffy Mixer |
APPLICATION
Surface/Joint Preparation...Remove foreign substances, incompressibles and
free water from joint opening. For proper adhesion, joints must
be clean and surface dry. Dust, dirt and laitance should be removed
prior to application. SOF-SEAL adheres well to unprimed concrete.
Proper joint design practices and application techniques must
be followed for successful performance. Cold-Applied SOF-SEAL
should be used in joints not less than 1/4" (6.35mm) wide.
A 2:1 width-to-depth ratio should be maintained. For straight
joint edges, mask off top surfaces with masking tape. To control
sealant depth, insert KOOL-ROD™ Backer Rod or DECK-O-FOAM® from W.
R. MEADOWS in the joint before sealing. For larger joints, where
additional support is required, use a non-asphalt joint filler
such as CERAMAR® Flexible Foam Expansion Joint Filler from W. R.
MEADOWS.
Mixing...Prior to mixing, Cold-Applied SOF-SEAL should be stored at temperatures of 55ºF (13ºC) or higher. The 2 components of Cold-Applied SOF-SEAL are pre-measured and must be mixed together at one time. Add the Activator to the Base Material and blend thoroughly. Mixing can be accomplished with a variable speed drill operated at slow speeds (see A) or by hand (see B). In either case, the mixing should be interrupted occasionally and the mixing paddle used to wipe material from the sides and bottom of the container for thorough blending.
A. Preferred Method: Mixing with a variable speed drill fitted with a slotted, flat-headed paddle is best accomplished when the drill is operated at slow speeds not to exceed 400 rpm. MIXING TIME IS 5 MINUTES MINIMUM.
B. Mixing by hand can be accomplished with
a flat, wooden mixing paddle. MIXING TIME BY HAND IS 8 MINUTES
MINIMUM.
Pouring...Cold-Applied SOF-SEAL may be poured from its
original container or any clean container suitable for pouring.
A commercial sealing pot equipped with a narrow pouring spout
and shutoff valve is ideal. Fill cracks or joints flush with pavement
surface. If cracks are overfilled, use a squeegee to achieve a
uniform appearance.To facilitate prompt opening to vehicular traffic,
about one hour after applying sealer, dust with limestone dust
or talc, as an example, to minimize tracking.
Clean up...Before
material has cured, use an aromatic solvent such as Toluene. After
material has cured, it will be necessary to cut or abrade the
material from equipment.
Precautions
Cold-Applied SOF-SEAL components are pre-measured
to exact quantities. Mix all materials in container; do not mix
partial units or dilute. Apply only when the temperatures of the
air and joint interfaces are 40ºF (4ºC) or higher.
Health Hazards
Avoid contact with skin or prolonged breathing of vapors. Refer
to Material Safety Data Sheet for
complete health and safety information.
This material last updated
July, 2004.
