The role of pitch plus Carbon Black
1. Disperse a small amount of carbon black into asphalt, and the viscoelastic properties, wear resistance and mechanical strength of asphalt will be improved.
2. Adding 15 parts of Black carbon to asphalt can extend the life of the pavement from 6 to 9 years to 10 to 15 years.
3. Adding pigment black to asphalt has a reinforcing effect.
4. Compared with the general asphalt road, the asphalt pavement added with Black Carbon can inhibit the decrease of the hardness of the pavement when the temperature rises, prevent ultraviolet aging, and improve the crack resistance, fatigue resistance (increased rigidity) and wear resistance.
Pitch carbon black blending ratio
Dispersing submicron Black Carbon in road asphalt at a dosage of 11-16% of the asphalt weight can significantly improve the durability, wear resistance and temperature-viscosity characteristics of asphalt. That is to say, the blending ratio of pitch carbon black is between 11:100 and 16:100.
Application of CB for asphalt
In addition to road asphalt, the pigment black is also used in asphalt protective films for buildings, asphalt adhesives, asphalt sealants and asphalt paints.