1. 碳纳米管改性沥青及混合料的高温流变和断裂韧性试验.
- Author
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曹睿明, 陈小兵, and 陈先华
- Subjects
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CARBON nanotubes , *DIFFERENTIAL scanning calorimetry , *FRACTURE toughness , *SCANNING electron microscopy , *THERMAL stability , *BITUMINOUS materials , *HEPATITIS B vaccines - Abstract
The indoor tests were used to investigate the effects of carbon nanotubes on the rheological properties of high temperature bitumen and the fracture toughness of mixture by comparing base asphalt with SBS modified asphalt, and the mechanism was explained by differential scanning calorimetry and scanning electron microscopy. The results show that carbon nanotubes can significantly improve the anti-shear and high-temperature anti-rut properties of asphalt and improve the construction temperature of asphalt mixture. When the content of carbon nanotubes is more than 2.0%, the rutting factor does not increase obviously. When the temperature reaches above 177 °C, bitumen is very easy to aging. Hence the maximum content of carbon nanotubes is 2.0%. The addition of carbon nanotubes decreases the endothermic peak at 150 °C, which can improve the thermal stability of asphalt greatly. Compared with the matrix asphalt and SBS modified asphalt, the addition of carbon nanotubes can physically adsorb and reinforce the asphalt and greatly improve the fracture toughness of asphalt mixture. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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