Morphological and rheological property analysis of polyphosphoric acid modified asphalt

被引：0
作者：
Wang L. [1 ]
Ren M. [1 ]
Li C. [1 ]
机构：
[1] School of Civil Engineering, Inner Mongolia University of Technology, Huhhot
来源：
Li, Chao (li.chao.yspa@163.com) | 2017年 / Beijing University of Aeronautics and Astronautics (BUAA)卷 / 34期
关键词：
Atomic force microscopy; Dynamic shear rheologica; Morphology; Polyphosphoric acid modified asphalt; Rheology;
D O I：
10.13801/j.cnki.fhclxb.20161228.001
中图分类号：
学科分类号：
摘要：
To get macro and micro-properties of polyphosphoric acid (PPA) modified asphalt, pure asphalt, 4 wt% styrene-butadiene-styrene blockcopolymer (SBS) modified asphalt and 2 wt% PPA modified asphalt were test by AFM and DSR based on morphology and rheology. The topography images and phase images of three types of asphalt were obtained from AFM, in which the size of “bee-like” structrue of PPA modified asphalt is a bit larger than that of pure asphalt asphalt and SBS modified asphalt, moreover, the whole image brightness of PPA modified asphalt is higher than that of pure asphalt and SBS modified asphalt. The PPA modified asphalt shows a stiffer and more uniform surface according to surface bearing index (Sbi) and the density of summits(Sds) analysis. The complex shear modulus(G*), phase angle(δ) and rutting factor(G*/sinδ) of three types of asphalt gotten from DSR indicate that PPA modified asphalt is better to resist the transformation from high temperature than the other two types of asphalt. © 2017, Chinese Society for Composite Materials. All right reserved.
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页码：2079 / 2084
页数：5
相关论文
共 19 条
  • [1] Jager A., Lackner R., Eisenmenger-Sittner C.H., Et al., Identification of four material phases in bitumen by atomic force microscopy, Road Materials & Pavement Design, 5, pp. 9-24, (2004)
  • [2] The Asphalt Handbook, (1989)
  • [3] Masson J.F., Leblond V., Margeson J., Bitumen morphologies by phase-detection atomic force microscopy, Journal of Microscopy, 221, 1, pp. 17-29, (2006)
  • [4] Miknis F.P., Pauli A.T., Beemer A., Et al., Use of NMR imaging to measure interfacial properties of asphalts, Fuel, 84, 9, pp. 1041-1051, (2005)
  • [5] Cao X.J., Zhang Z.X., Hao W.P., Et al., Effect of polyphosphoric acid on the high-and-low temperature property of matrix asphalt mixture, Journal of Wuhan University of Technology, 36, 6, pp. 47-53, (2014)
  • [6] Zhang H.L., Shi C.J., Yu J.N., Et al., Modification and its mechanism of different asphalts by polyphosphoric acid, Journal of Building Materials, 16, 2, pp. 255-260, (2013)
  • [7] Fu L.Q., Wang Z.L., Huang X.M., Performance research of polyphosphoric modified asphalt, Journal of Highway and Transportation Research and Development, 5, 2, pp. 16-19, (2008)
  • [8] Binnig G., Quate C.F., Atomic force microscope, Physical Review Letters, 56, 9, pp. 930-933, (1986)
  • [9] Loeber L., Sutton O., Morel J., Et al., New direct observation microscopy and atomic force microscopy, Journal of Microscopy, 182, 1, pp. 32-39, (1996)
  • [10] Das P.K., Kringos N., Wallqvist V., Et al., Micromechanical investigation of phase separation in bitumen by combining atomic force microscopy with differential scanning calorimetry results, Road Materials & Pavement Design, 14, 2, pp. 25-37, (2013)
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