Pavement Cold Joint Adhesive
Description: The Dura-Fill CJA is a hot-applied modified asphalt adhesive. It is used as an adhesive and tacking material on longitudinal cold construction joints on asphaltic pavements. The Dura-Fill CJA fosters a long lasting seal between two sections of asphaltic pavement. It prolongs pavement service life by sealing the joints from water penetration, which cause base failure and potholes. Dura-Fill provides excellent re-sults in cold weather and throughout repeated freeze/thaw cycles. Dura-Fill CJA is formulated with select asphaltic resins, synthetic polymeric rubbers, plasticizers, stabilizers and a blend of organic and inorganic reinforcing fillers.
Recommended Uses: Dura-Fill CJA is applied 1/8 inch thick across the edge of the first paving pass. When the adjacent lane of asphaltic pavement is put into place, the heat from this material and the compaction of the roller cause the Dura-Fill CJA to adhere to both lanes. This forms a durable bond between the two overlay passes. This product can also be used as a waterproofing agent on shoulder interfaces, around manhole covers and other utility cuts in asphaltic pavement.
Melting and Application: Melt Dura-Fill CJA using a conventional oil jacketed kettle equipped with agitator and temperature control devices for both the material and heat transfer oil. Carefully insert small quantities of Dura-Fill CJA and the plastic bag into the melting equipment while the agitator is turned off. Load material slowly to avoid splash back. After the initial load has reached the recommended pouring temperature, fresh material may be added to the melter as sealant is used. Melt only the material that will be used during that day. Purge material remaining in the kettle lines at the end of each sealing operation.
Note: The temperature of the heat transfer oil should not exceed 525°F. Do not heat Dura-Fill above the maximum heating temperature and do not maintain it at that temperature for prolonged periods of time. This could cause the material to gel in the equipment or fail in the joints. A significant viscosity increase accompanied by stringiness signals the approach of gelation. If this occurs, immediately remove the material from the melter and dispose of it.
For further details read and follow the Dura-Fill SDS, Installation Instructions for Oil Jacketed Dura-Fill Products and P&T Products’ Warranty.
|Maximum Safe Heating Temp||400º F Max.|
|Application Temp||370º-390º F|
|Heating Time||12 Hours Max.|
|Penetration||77º F||60-90 dmm|
|Resiliency||77º F||40% Min.|
|Flow||140º F||3 mm Max.|
|Softening Point||171º F Min.|
|Low Temperature Flexibility||1" Mandrel Bend||0º F Pass|
|Viscosity||375º F||40-100 Poise|
|Ductility||77º F||30 cm Min.|
|Ductility||39º F||30 cm Min.|
|Tensile Adhesion||77º F||500% Min.|
|Specific Gravity||1.10 Approximately|
|Flash Point||410º F Min.|
|Optimum Climate||ALL Climate Zones|