摘要To study the regular properties of modified bio-asphalt, analytical and measuring methods, including softening point, penetration, and ductility tests, were employed to analyze the improvement of properties in different mixing proportions of bio-asphalt and modified asphalt. Results indicated that after mixing bio-asphalt with modified asphalt, the penetration of bio-asphalt declined constantly with an increment proportional to the modified asphalt. The excellent performance at high temperature of the two kinds of bio-asphalts was affected by the mixing of modified asphalt. According to the analysis of temperature stability, the ductility of bio-asphalt significantly improved after mixing with modified asphalt, although the softening point declined. The stiffness and brittleness of bio-asphalt at low temperature improved as well, particularly in SBS and SBR modified asphalts. Results improved as the proportion of modified asphalt increased.
Abstract：To study the regular properties of modified bio-asphalt, analytical and measuring methods, including softening point, penetration, and ductility tests, were employed to analyze the improvement of properties in different mixing proportions of bio-asphalt and modified asphalt. Results indicated that after mixing bio-asphalt with modified asphalt, the penetration of bio-asphalt declined constantly with an increment proportional to the modified asphalt. The excellent performance at high temperature of the two kinds of bio-asphalts was affected by the mixing of modified asphalt. According to the analysis of temperature stability, the ductility of bio-asphalt significantly improved after mixing with modified asphalt, although the softening point declined. The stiffness and brittleness of bio-asphalt at low temperature improved as well, particularly in SBS and SBR modified asphalts. Results improved as the proportion of modified asphalt increased.
基金资助:Supported by the National Natural Science Foundation of China (No.51478211);the Application Foundation Research Project of Ministry of Transport (No.2014319223110);the First Class General Financial Grant from the China Postdoctoral Science Foundation (No.2014M550033);the Key Program of Basic Scientific Research fund of Research Institute of Highway of Ministry of Transport (No.2012-9033)
通讯作者:
HE Min, E-mail:hemin307@163.com
E-mail: hemin307@163.com
引用本文:
何敏, 曹东伟, 张海燕, 宋昭睿, 吴小维. 改性生物沥青常规性能研究[J]. Journal of Highway and Transportation Research and Development, 2015, 9(2): 1-6.
HE Min, CAO Dong-wei, ZHANG Hai-yan, SONG Zhao-rui, WU Xiao-wei. Research on Conventional Performance of Modified Bio-asphalt. Journal of Highway and Transportation Research and Development, 2015, 9(2): 1-6.
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2015, Vol. 9 
