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.
引用
收藏
页码：2079 / 2084
页数：5
相关论文
共 19 条
  • [11] Pauli A.T., Branthaver J.F., Robertson R.E., Et al., Atomic force microscopy investigation of SHRP asphalts, American Chemical Society Division of Petroleum Chemistry Preprints, 46, 2, pp. 110-114, (2001)
  • [12] Yi J.Y., Pang X.Y., Yao D.D., Et al., Characterization of surface roughness and adhesive mechanism of asphalt and mineral aggregate based on atomic force microscopy method, Acta Materiae Compositae Sinica, 34, 5, pp. 1111-1121, (2017)
  • [13] Dourado E.R., Pizzorno B.S., Motta L.M., Et al., Analysis of asphaltic binders modified with PPA by surface techniques, Journal of Microscopy, 254, 3, pp. 122-128, (2014)
  • [14] Rebelo L.M., Cavalcante P.N., Sousa J.S.D., Et al., Micromorphology and microrheology of modified bitumen by atomic force microscopy, Road Materials & Pavement Design, 15, 2, pp. 300-311, (2014)
  • [15] Yan K., Zhang H., Xu H., Effect of polyphosphoric acid on physical properties, chemical composition and morphology of bitumen, Construction & Building Materials, 47, 5, pp. 92-98, (2013)
  • [16] Masson J.F., Leblond V., Margeson J., Et al., Low-temperature bitumen stiffness and viscous paraffinic nano-and micro-domains by cryogenic AFM and PDM, Journal of Microscopy, 227, 3, pp. 191-202, (2007)
  • [17] Allen R.G., Little D.N., Bhasin A., Structural characterization of micromechanical properties in asphalt using atomic force microscopy, Journal of Materials in Civil Engineering, 24, 10, pp. 1317-1327, (2012)
  • [18] Loeber L., Sutton O., Morel J., Et al., New direct observations of asphalts and asphalt binders by scanning electron microscopy and atomic force microscopy, Journal of Microscopy, 182, 1, pp. 32-39, (1996)
  • [19] Zhang M.M., Reserch on the microstructrue and technical performance of polyphosphoric acid modified asphalt, (2012)
12