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- Title
橡胶粉-石油沥青交联机制及高温流变特性.
- Authors
韦正鹏; 刘富强
- Abstract
In order to study the crosslinking mechanism of rubber powder and petroleum and high temperature rheological properties of rubber powder modified asphalt, the basic performance tests, dynamic shear rheological test and Fourier transform infrared were adopted to investigate the crosslinking mechanism and high temperature rheological properties. The results show that rubber powder can effectively improve the high and low temperature performance of matrix asphalt, the penetration value of matrix asphalt is 86. 44% higher than that of rubber powder modified asphalt, the softening point is 24. 28% lower than that of rubber powder modified asphalt, and the 5 ℃ ductility of rubber powder modified asphalt is 49. 32% lower than that of matrix asphalt. At the same time, the complex modulus and rutting factor of rubber modified asphalt are significantly higher than that of matrix asphalt and styrene-butadiene-styrene block copolymer modified asphalt, and the phase angle is significantly lower than the other two kinds of asphalt. The matrix asphalt, styrenebutadiene-styrene block copolymer modified asphalt and rubber fume modified asphalt have similar Fourier transform infrared vibration characteristic peaks, but due to the physical swelling, chemical degradation and desulfurization between rubber fume and asphalt, the vibration peak of rubber fume modified asphalt at the characteristic position is significantly stronger than that of the other two kinds of asphalt.
- Publication
Science Technology & Engineering, 2023, Vol 23, Issue 33, p14399
- ISSN
1671-1815
- Publication type
Article