Kratko priopćenje
https://doi.org/10.15255/KUI.2016.019
Effects of SBS Configuration on Performance of High Modulus Bitumen Based on Dynamic Mechanical Analysis
Ming Liang
; State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266 580, Kina
Yong Hu
; State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266 580, Kina
Xiangjun Kong
; State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266 580, Kina
Weiyu Fan
; State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266 580, Kina
Xue Xin
; State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266 580, Kina
Hui Luo
; State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266 580, Kina
Sažetak
High modulus bitumens modified by polystyrene-block-polybutadiene-block-polystyrene (SBS) with different molecular structure were investigated on dynamic shear rheometer and fluorescence microscopy to evaluate viscoelastic properties and morphology of binders. The results shows that storage modulus (G’) is obviously less than loss modulus (G”), which means viscous behaviour of bitumen is dominant, and anti-rutting factor (G* ⁄ sin δ) is markedly enhanced by star SBS than by linear SBS. The morphology indicated that star SBS improved the softening point more obviously, tending to form a cross-linked network in bitumen. As for linear SBS, it is dispersed in bitumen in the form of globules and enhances the ductility of binder.
Ključne riječi
dynamic mechanical analysis; anti-rutting; microstructure; high modulus bitumen
Hrčak ID:
161954
URI
Datum izdavanja:
25.7.2016.
Posjeta: 1.263 *