The research for high-performance SBR compound modified asphalt

Abstract The high-performance SBR compound modified asphalt can be made with the addition of polyphosphoric acid (PPA), styrene–butadiene rubber (SBR) and sulfur. The effects of PPA, SBR, sulfur on the physical properties, the dynamic rheological properties, the high-temperature storage stabilities, the morphologies and the internal structures of asphalts were studied, respectively. The high-temperature storage stability of SBR-modified asphalt can be improved significantly with the addition of PPA and sulfur by the gelation effect and the dynamical vulcanization. The addition of SBR to the pure PPA modified asphalt improved the low-temperature physical properties with unfavourable effects on the resistance to rutting. The addition of sulfur to the PPA/SBR-modified asphalt improved the rheological properties and the adhesion of modified binders to stone matrix. The optimal proportion of PPA, SBR, sulfur can improve the properties of asphalt roundly.

[1]  Virginie Mouillet,et al.  Comparison by Fourier transform infrared (FTIR) spectroscopy of different ageing techniques: application to road bitumens , 2001 .

[2]  L. H. Lewandowski,et al.  Polymer Modification of Paving Asphalt Binders , 1994 .

[3]  Y. Yildirim.  Polymer modified asphalt binders , 2007 .

[4]  S. Hesp,et al.  Chlorinated Polyolefins for Asphalt Binder Modification , 1994 .

[5]  Darrell C. Fee,et al.  Polyphosphoric Acid Modification of Asphalt , 2010 .

[6]  Yvonne Becker,et al.  Polymer modified asphalt , 2001 .

[7]  H. Mark,et al.  Encyclopedia of polymer science and engineering , 1985 .

[8]  G. Orange,et al.  CHEMICAL MODIFICATION OF BITUMEN THROUGH POLYPHOSPHORIC ACID: PROPERTIES-MICRO-STRUCTURE RELATIONSHIP , 2004 .

[9]  F. Martínez-Boza,et al.  Effect of processing variables on the linear viscoelastic properties of SBS‐oil blends , 2001 .

[10]  C. Giavarini,et al.  Shifting the bitumen structure from sol to gel , 1999 .

[11]  Ulf Isacsson,et al.  Modification of road bitumens with thermoplastic polymers , 2000 .

[12]  G. Baumgardner,et al.  Polyphosphoric acid use in asphalt: more than 40 years experience , 2006 .

[13]  Virginie Mouillet,et al.  Ageing by UV radiation of an elastomer modified bitumen , 2008 .

[14]  Carlo Giavarini,et al.  Production of stable polypropylene-modified bitumens , 1996 .

[15]  Yong Zhang,et al.  Rheological characterization of storage-stable SBS-modified asphalts , 2002 .

[16]  Yves Pietrasanta,et al.  Bitumen-polymer blends for coatings applied to roads and public constructions , 1989 .