Instructions / Assembly

PRODUCT DESCRIPTION
Crack-Rite™ Boxless DF (Direct Fire) Joint Sealant is a superior
quality, hot-applied, polymer modified sealant which has the unique
capability of being melted and heated to application temperatures in
a direct fired or single walled melting kettle. It consists of a special
blend of the highest quality virgin oils, resins, polymers, plasticizers,
stabilizers and asphalt cement. Crack-Rite™ Boxless DF is
furnished as a solid and forms an elastomeric, self-leveling seal at
application temperatures. It is a low viscosity sealant which melts
quickly and can be used in both asphalt and concrete pavements.
When properly applied, it combines tenacious adhesive power with
exceptional flexibility and resiliency. Crack-Rite™ Boxless DF
provides a permanent seal against the infiltration of moisture or
incompressibles through repeated thermal cycles of expansion and
contraction. It exhibits superior low temperature ductility, weather
resistance, low oxidation breakdown and hardening characteristics.
The modifier system contained in Crack-Rite™ Boxless DF allows
the material to withstand temperatures up to 550°F without
experiencing degradation, tracking or bleeding.
PRODUCT USE
Crack-Rite™ Boxless DF is recommended for sealing cracks and
joints in Portland Concrete and Asphalt pavements. It is primarily a
maintenance sealant, highly recommended for sealing cracks in
asphalt pavement prior to sealing, slurry asphalt sealing, chip sealing
or asphalt overlay. Crack-Rite™ Boxless DF has incredible
flexibility and resiliency to create a permanent bond between asphalt
to asphalt, asphalt to concrete and concrete to concrete.
PHYSICAL PROPERTIES TEST TEST RESULTS
Cone penetration @ 77°F (25°C) 150g., 5S 35-45
Resilience @ 77°F (25°C) (ASTM D-3407) 70%
Flow @ 140°F (60°C) 0mm
Asphalt compatibility (ASTM D-3407) pass
Softening point (ASTM D36) 210°F (99°C)
Elongation 1800%
Drying Time (Traffic ready) 20 minutes
Weight per Gallon 9.2 lbs
CRACK AND JOINT PREPARATION
Existing
Remove all existing crack sealant, fillers, dirt, sand, dust or other
loose impediment from joint interfaces. Loosen and remove by
plowing, cutting, blowing, wire brushing, sand blasting, applying
high pressure water, heatlancing or a combination of all techniques.
The cracks/joints can be prepared, utilizing one or more of the
following tools or equipment:
• Hand tools, (i.e., shovels, metal bars with chisel-shaped ends, stiff bristle broom, wire brushes or scrapers)
• Heatlance/TaFa Unit which operates @ 3000°F
• Router - vertical spindle or rotary type
• Oil free compressed air, capable of furnishing (90 PSI)
pressure at nozzle. The compressor shall be equipped with traps that will maintain the compressed air free of oil and water.
• Sawing equipment
All joints and cracks must be free of moisture and thoroughly
cleaned prior to sealing.
New Construction
Joints to be sealed must be clean and dry. Curing compound on
joint interfaces must be removed by sandblasting. Dust, dirt and
debris should be blown out of the joints with oil free compressed air
immediately prior to sealing operation.
Crack & Joint Configuration
The ideal Crack & Joint Configuration is a 1:1 depth to width ratio.
Re-Shaping
It is recommended that all cracks 1/4” and less should be routed to a
minimum width of 1/2” and minimum depth of 1/2”. Cracks over
1/2” in width that have an adequate sealant reservoir and intact joint
interface, do not require widening or reshaping.
Boxless HOT POUR Crack & Joint Sealant