Study of Mechanism of Flame-Retardant SBS-Modified Asphalt

To test the flame capability of styrene-butadiene-styrene (SBS) block copolymer- modified asphalt, a complex flame retardant was applied, followed by a conventional pavement performance and flame performance test. Results showed no significant change in flame retardant SBS-modified asphalt As the blending amount of complex flame retardant increased, however, the ductility of the asphalt decreased. A mixture of 12% fire retardant and 7% SBS-modified asphalt met the polymer-modified asphalt SBS category I-D technical specification performance requirement. The Underwriters Laboratory Vertical Burning (UL94) classification reached V0 grade and the limited oxygen index (LOI) reached 26.2%. While combustion heat release can be reduced through flame retardant mixed with the SBS-modified bitumen, combustion termination can be slowed down by flame retardant responses to different temperatures, such as hydrogen bromide precipitation.

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  • Authors:
    • Liu, Da-Liang
    • Huang, Yun-Yong
    • Zheng, Jian-Long
    • Yuan, Jian-Bo
    • Liu, Ye-Qiu
  • Publication Date: 2009-7


  • English

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  • Accession Number: 01145276
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 2 2009 4:13PM