Asphalt Additives
HiperCell Cellulosic Fiber
HiperCell Cellulosic Fiber is a high performance cellulosic fiber that supports bitumen and increases stability in open and semi-open mixtures (such as SMA and porous asphalt). The bitumen percolation occurs as a problem during the stone mastic asphalt (SMA) applications because amount of bitumen is more. HiperCell Cellulosic Fiber blocks percolation and prevents desorption in the coating. It is also used for increasing mechanical strength of asphalt, reducing the peeling of bitumen from aggregate and adding other positive characteristics to the mixture.
Fields of Application and Use
HiperCell is a high performance cellulosic fiber used in stone mastic asphalt (SMA) applications. The bitumen percolation occurs as a problem during the stone mastic asphalt (SMA) applications because amount of bitumen is more. HiperCell blocks percolation and prevents bleeding in the coating. It also helps to increase mechanical strength of asphalt.
Percolation
SMA design contains 30-40% more bitumen than standard asphalt application. During the time from the production and loading of bitumen in the asphalt mixture on truck to the time of spreading bitumen on the road, it starts to float down due to the effect of gravity, and the homogeneity of the asphalt mixture is disrupted. HyperCell protects the homogeneity of the asphalt mixture by preventing percolation.
Bleeding
The high amount of bitumen contained in SMA tends to float up to the surface (bleed) due to the pressure effect of the rollers. HyperCell protects the homogeneity of the asphalt mixture by preventing such bleeding.
Advantages
The use of HiperCell Cellulosic Fiber in SMA applications:
It prevents bitumen percolation in asphalt mixture.
It prevents bitumen bleeding in asphalt pavement.
It increases resistance against cracking.
It reduces ducting and wheel tracks.
It delays exhaustion cracks.
It creates a three-dimensional reinforcement within asphalt.
Application
HiperCell is directly added to the plant mixer by hand or by a dosing pump.
It is produced in the form of pellet to ensure that no dust is dispersed around.
HiperCell is used between 0.25-0.35 of the asphalt mixture depending on the thickness of the coating and the gradation of the aggregate.
It is designed to allow for easy dispersion in asphalt plant mixer.
Packaging
It should be kept in its original packaging protected against moisture. 500 kg big bag.
Technical Specifications
| Specifications | Standard | Unit |
|---|---|---|
| Structure | Compressed cellulosic fiber | |
| Appearance | Granular | |
| Color | Dark Brown | |
| Pellet Diameter | 5 | mm |
| Thermal Resistance | >250 | ° C |
| Maximum Humidity Ratio | <5 | % |
| Granular Binder | Bitumen | |
| Average Fiber Length | Approximately 800 | µm |
| Density | Approximately 600 | g/l |
| Packaging | 500 | kg |
| Recommended Dosage for 1 ton of Asphalt Mixture | 3 | kg |
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