Preblended T2
Description: Dura-Fill Mastic Black is a hot-applied, preblended repair mastic comprised of a black, asphalt-based, polymer-modified binder and a select aggregate. This material is self adhesive. Dura-Fill Mastic Black resists cracking, delamination and spalling. It is a flexible material that can withstand heavy loads, weather, traffic and thermal movement. Mastic Black provides a high-friction surface to ensure driver safety. Compaction equipment is not necessary with Dura-Fill Mastic Black. This repair system is formulated to provide a feathered edge.
Recommended Uses: Dura-Fill Mastic Black is recommended for sealing wide cracks and joints, as well as repairing a large variety of distresses in cement and asphalt pavements. It is designed for large cracks and distressed surface areas too small for re-paving yet too large for traditional hot-applied crack sealants.
Surface Preparation: Proper surface preparation facilitates adhesion and consequently the maximum ser-vice life of the mastic. In order for proper adhesion to occur, the surface must be free of moisture, dust, loose aggregate and other contaminates. Avoid use in highly-distressed areas that require reconstruction. The substrate and air temperatures must be 40 °F or above. Use oil-free compressed air and heat to clean and dry the area immediately prior to application. Heating the pavement will promote bonding between the mastic and pavement surface. Caution: Do not overheat/oxidize the pavement.
Melting and Application: Melt Dura-Fill Mastic Black using an oil-jacketed kettle designed for mastic materials. The kettle should be equipped with an agitator and temperature control devices for the material and heating oil. Carefully insert small quantities of Dura-Fill product and the plastic bag into the melter while the agitator is turned off to avoid splash back. Once material has reached application temperature, apply to freshly prepared area. Dura-Fill Mastic Black can be applied directly from the melter using an appropriate flute, bucket or mastic wagon. Immediately following application, the mastic shall be leveled and smoothed using mastic flutes. In deep installations, mastic may be applied in layers, cooling in between. When mastic is installed where added skid resistance is desired, Dura-Fill Mastic Black may be covered with Dura-Top™ surface aggregate. Dura-Fill Mastic Black is ready for traffic when it has cooled and solidified.
Note: The temperature of the heating oil should not exceed 525 °F. Do not heat material over 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 on the pavement. A significant viscosity increase accompanied by stringiness signals the onset 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, Mastic Installation Instructions, and P&T Products’ Warranty.
| Heating Temperature | 400 °F Max. | |
| Application Temperature | 375 - 400 °F | |
| Heating Time | 12 Hours Max. | |
| Specific Gravity | Approximately 1.8 | |
| Mastic Resilience | 50% Min. | |
| Effects of Rapid Deformation | -18 °C / 8 N-m Impact | Pass |
| Crack Bridging | -18 °C / ⅛ inch Extension | 3 Cycles Pass |
| Mastic Stability | 70 °C | 40.0 mm Max. |
| Flexibility | 0 °C | Pass |
* Specifications are as tested according to ASTM D 8260 and D 5329.
Dura-Top™ surface aggregates are available in both ⅛ inch size and ¼ inch size with a maximum abrasion loss of 35% (ASTM C 131).