Adhesive for Engineered Materials Arresting System Blocks (EMAS)
Description: Dura-Fill Airport Adhesive is a blend of 75% PG 64-22 with 25% polymerized hot pour crack and joint sealant. Dura-Fill Airport Adhesive acts as a bonding agent or anchor devise between the overrun surface of an airport runway and the emergency arresting concrete blocks.
Recommended Uses: Dura-Fill Airport Adhesive is recommended for use in adhering the EMAS concrete blocks at airports. An Engineered Materials Arrestor System or Engineered Materials Arresting System (EMAS) is a bed of lightweight, crushable concrete built at the end of a runway. The purpose of an EMAS is to stop an aircraft overrun with no human injury and minimal aircraft damage. The aircraft is slowed by the loss of energy required to crush the concrete blocks.
Surface Preparation: Proper surface preparation facilitates adequate adhesion and consequently the maximum life of the adhesive. In order for proper adhesion to occur, the surface must be free of moisture, dust, loose aggregate and other contaminates. The substrate and air temperatures must be 40°F or above. Use oil-free compressed air and heat to clean and dry the surface immediately prior to application.
Melting and Application: Melt Dura-Fill Airport Adhesive 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 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. The material may be safely reheated and can be applied using a pressure feed wand system or a pour pot.
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 materi-al 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||40-70 dmm|
|Resiliency||77º F||3% Min.|
|Softening Point||130º F Min.|
|Viscosity||375º F||5 Poise Max.|
|Specific Gravity||1.05 Approximately|
|Flash Point||400º F Min.|
|Optimum Climate||ALL Climate Zones|