CrackMaster Blend
Bonding agent or anchor devise between the overrun surface of an airport runway and the emergency arresting concrete blocks. Designed for use in oil-jacketed kettles.
Sizes Available
50 lb. box with two 25 lb. cubes per box.
Coverage
Use the following chart as a guideline for estimating material requirements (based upon pounds of material needed for 100 feet of cracks):
| Crack Width | Depth | lbs. / 100 ft |
| 3/8″ | 3/8″ | 6.9 lbs. |
| 1/2″ | 1/2″ | 12.3 lbs. |
| 3/4″ | 3/4″ | 27.8 lbs. |
NOTE: The above coverage rates are only a guideline. Actual material usage may vary due to width of application and thickness of material above pavement surfaces.
Description
CrackMaster Blend is a blend of 75% PG 64-22 with 25% CrackMaster Supreme DF. CrackMaster Blend acts as a bonding agent or anchor devise between the overrun surface of an airport runway and the emergency arresting concrete blocks.
Uses
CrackMaster Blend 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.
Mixing Procedures
Use material as supplied. Do not blend with other materials. After CrackMaster Blend is melted it should be agitated or recirculated.
Application
Apply heated CrackMaster Blend using either a pump and wand system or a pour pot. For best results the sealant depth to width ratio should not exceed 2 to 1 (i.e. 2-inches deep to 1-inch wide). The cooled sealant height should not exceed 1/8″ above surrounding pavement. Using a sealing shoe or squeegee, band the material 2 to 3 inches wide over the crack.
Important
Protective apparel is recommended with application of CrackMaster™ Blend. The extremely hot material will cause severe burns on contact with skin. OSHA Safety Regulations require workers to wear the following types of safety attire (see current OSHA/Safety Regulations for additional information): Hard hat with face shield; long sleeved shirt buttoned at the wrist; heat resistant gloves; long, cuffless pants; and safety toed work boots. Make certain all area around melter is clear of all debris and flammable materials. Avoid breathing vapors. Use with adequate ventilation.
Clean Up
Wash tools in water before material dries.
| Unit Size | Unit Weight |
| 50 lb. Box | 50 lbs. |