Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
권호 표지
DOI QR코드

DOI QR Code

Effect of Paraffin Oil on the Low Temperature Adhesion Properties of CR/SBS Modified Asphalt Sealants

CR/SBS 개질 아스팔트 실란트의 저온접착특성에서 파라핀 오일 첨가에 의한 효과

  • Received : 2011.04.30
  • Accepted : 2011.07.26
  • Published : 2012.02.01
Download PDF
⟨ Previous Next ⟩

Abstract

The main objective of this work was studying the influence of paraffin oil(PO) on the adhesion properties at low temperature in styrene-butadiene-styrene(SBS) copolymer and crumb rubber(CR) modified asphalt. The temperature susceptibility of SBS/CR asphalt and PO/SBS/CR/asphalt blends were measured by penetration and softening point. Adhesion properties at low temperature and dispersion of modifiers in PO/SBS/CR/asphalt blends were evaluated by universal test machine and florescence microscopy, respectively. The adhesion properties of PO/SBS/CR/asphalt blends at low temperature increased in the proportion of SBS contents with both 5 and 10 wt % of paraffin oil. Results showed that the maximum tensile adhesion strength and toughness energy at $-20^{\circ}C$ were obtained when PO and SBS contents were 10 wt % and 6 wt %, respectively. The addition of PO is effective for enhancing the flexibility of SBS/CR/asphalt blends and leads to the increase of toughness at low temperature.

본 연구의 목적은 styrene-butadiene-styrene(SBS) 블록공중합체와 폐타이어 고무분말(crumb rubber, CR)로 개질한 아스팔트의 저온접착특성에 대해 파라핀오일 가소제의 영향에 대한 것이다. SBS/CR로 개질한 아스팔트 블렌드와 파라핀오일/SBS/CR 아스팔트 블렌드의 온도 민감성을 침입도와 연화점으로 측정하였다. 형광현미경으로 파라핀오일/SBS/CR 아스팔트 블렌드에 대한 개질제들의 분산 상태와 만능시험기로 저온에서 접착성질을 각각 측정하였다. 저온접착시험에서 SBS 함량의 증가와 파라핀오일 함량 5 wt % 및 10 wt %에서 접착강도와 변형률이 증가하였다. $-20^{\circ}C$에서 측정한 접착강도와 강인성은 파라핀오일이 10 wt %와 SBS 공중합체의 양이 6 wt %인 조성에서 최대값을 얻었다. SBS/CR/아스팔트 블렌드에서 파라핀오일의 첨가는 유연성을 부여하는 효과를 나타내고, 저온에서 강인성의 증가를 가져오는 것을 확인하였다.

Keywords

References

  1. Takamura, K., "Methods of Rejuvenating Road Surfaces with Polymer Modified asphalt Emulsion," US Patent 7357594 (2008).
  2. Freeman, R. B. and Johnson, D., "Cost Effectiveness of Crack Sealing Materials and Techniques for Asphalts Pavement," FHWA/ MT-98-007/8127, Western Trans. Inst., Montana State University, Bozeman, Mont.(1999).
  3. Harvey, J. A. F. and Cebon, D., "Fracture Tests on Bitumen Films," J. Mater. Civil Eng., 17, 99 (2005). https://doi.org/10.1061/(ASCE)0899-1561(2005)17:1(99)
  4. Lee, S. J., Amirkhanjan, S. N., Putman, B. J. and Kim, K. W., "Laboratory Study of the Effects of Compaction on the Volumetric and Rutting Properties of CRM asphalt Mixtures," J. Mater. Civil. Eng., 19, 1079(2007). https://doi.org/10.1061/(ASCE)0899-1561(2007)19:12(1079)
  5. K. J. O and Kim, J. S., "Influence of Processing Conditions on the Physical Properties of Crumb Rubber Modified Asphalts," J. Korean Soc. Road Eng., 10, 239(2008).
  6. Kim, J. S., "Influence of a Flexibilizer on Physical Properties of Crumb Rubber Modified Asphalt Sealants," Journal of Korean Society Road Engineers., 11, 33(2009).
  7. Kraus, G., "Modification of Asphalt by Block Polymer of Butadiene and Styrene," Rubber Chem. Technol., 55, 1389 (1982). https://doi.org/10.5254/1.3535936
  8. Morrison, G. R. and Hesp, S. A. M., "A New Look at Rubber Modified Asphalt Binders," J. Mater. Sci., 30, 2584(1995). https://doi.org/10.1007/BF00362138
  9. Kim, G. and Libera, M., "Morphological Development in Solvent Cast Polystyrene-polybutadiene-polystyrene (SBS) Triblock Copolymer Thin Films," Macromolecules, 31, 2569(1998). https://doi.org/10.1021/ma971349i
  10. Blanco, R., Rodriguez, R., Garcia-Garduno, M. and Castano, V. M., "Rheological properties of Styrene-butadiene Copolymer Reinforced Asphalt," J. Appl. Polym. Sci., 61, 1493 (1996). https://doi.org/10.1002/(SICI)1097-4628(19960829)61:9<1493::AID-APP9>3.0.CO;2-E
  11. Hernandez, G., Medina, E. M., Sanchez, R. and Mendoza, M., "Thermomechanical and Rheological Asphalt Modification Using Styrene-butadiene Triblock Copolymers with Different Microstructure," Energy Fuels., 20, 2623(2006). https://doi.org/10.1021/ef050393t
  12. ASTM D5-06, Standard test method for penetration of bituminous materials(2006).
  13. Pfeiffer, J. P. and Doormaal, P. M., "The Rheological Properties of Asphaltic Bitumen," Journal of the Institute of Petroleum Technologists, 22, 414(1936).
  14. ASTM D36-06, Standard Test Method for Softening Point of Bitumen (ring-and-ball apparatus)(2006).
  15. ASTM D-5329-07, Standard test methods for sealants and fillers, hot applied, for joints and cracks in asphaltic and portland cement concrete pavements(2007).
  16. Morrison, G. R., Lee, J. K. and Hesp, S. M., "Chlorinated Polyolefin for Asphalt binder Modification," J. Appl. Polym. Sci., 54, 234(1994).
  17. Gawel, I., Stepkowski, R. and Czechowski, F., "Molecular Interactions Between rubber and Asphalt," Ind. Eng. Chem. Res., 45, 3044(2006). https://doi.org/10.1021/ie050905r
  18. Yamaguchi, D., Cloitre, M., Panine, P. and Leibler, L., "Phase Behavior and viscoelastic Properties of Thermoplastic Elastomer Gels Based on ABC Triblock copolymers," Macromolecules, 38, 7798(2005). https://doi.org/10.1021/ma050294e