新型丁苯橡胶复合改性沥青的制备及性能分析
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摘要
将C9石油树脂、硫磺和丁苯橡胶(SBR)添加到基质沥青中,制备了一种新型的SBR复合改性沥青,通过常规指标实验,动态剪切流变试验(DSR)分别考察了C9石油树脂、硫磺(S)、SBR对基质沥青物理性能和高温流变性能的影响。结果表明:SBR/S复合改性沥青中添加适量的C9石油树脂后软化点升高,针入度下降,高温流变性能得到改善。通过弯曲梁流变试验(BBR)考察了C9石油树脂对SBR/S复合改性沥青低温抗开裂性能和老化性能的影响,发现适量的C9石油树脂可以改善SBR/S复合改性沥青的老化性能,对于低温抗开裂性能影响不大。
The new-style SBR compound modified asphalt can be made by the addition of C9 petroleum resin,sulfur and SBR.The effect of C9 petroleum resin,sulfur and SBR on the physical property and high-temperature rheological property of asphalt were investigate by conventional test and dynamic shear rheological(DSR),as well as low-temperature cracking-resistance property,respectively.The results showed that the softening point increased,the needle penetration decreased and high temperature performance improved with adding C9 petroleum resin to asphalt.The effect of C9 petroleum resin on low temperature cracking resistance and aging property of asphalt was investigated by bending beam rheometer(BBR).BBR showed that C9 petroleum resin can improve the aging property of asphalt,and had little effect on the low temperature cracking resistance.
The new-style SBR compound modified asphalt can be made by the addition of C9 petroleum resin,sulfur and SBR.The effect of C9 petroleum resin,sulfur and SBR on the physical property and high-temperature rheological property of asphalt were investigate by conventional test and dynamic shear rheological(DSR),as well as low-temperature cracking-resistance property,respectively.The results showed that the softening point increased,the needle penetration decreased and high temperature performance improved with adding C9 petroleum resin to asphalt.The effect of C9 petroleum resin on low temperature cracking resistance and aging property of asphalt was investigated by bending beam rheometer(BBR).BBR showed that C9 petroleum resin can improve the aging property of asphalt,and had little effect on the low temperature cracking resistance.
引文
[1]周丽峰.BRA与SBR复合改性沥青及其混合料技术性能研究[J].公路工程,2014,39(6):277-282.
[2]Zhang F,Yu J.The research for high-performance SBR compound modified asphalt[J].Construction and Building Materials,2010,24(3):410-418.
[3]陈天泉.化学交联改善SBR改性沥青粘韧性能的试验研究[J].公路交通技术,2015(6):18-20.
[4]Zhang F,Hu C.Influence of aging on thermal behavior and characterization of SBR compound-modified asphalt[J].Journal of Thermal Analysis and Calorimetry,2014,115(2):1211-1218.
[5]丛玉凤,徐磊,黄玮,等.SBS-C9石油树脂改性沥青的研究[J].建筑材料学报,2016,19(3):602-605.
[6]孙艳娜,李立寒.几种改性沥青粘弹性与高温性能的评价与分析[J].公路工程,2008,33(4):79-83.
[7]Fernandes M R S,Forte M M C,Leite L F M.Rheological evaluation of polymer-modified asphalt binders[J].Materials Research,2008,11(3):381-386.
[8]Wang L,Chang C.Rheological evaluation of polymer modified asphalt binders[J].Journal of Wuhan University of Technology-Mater Sci Ed,2015,30(4):695-702.
[9]田卫群,周彬,丛菱,等.改性沥青混合料高温性能及其评价方法[J].建筑材料学报,2009,12(3):285-287,291.
[10]李超,邬迪,王子豪,等.多聚磷酸改性沥青结合料高低温流变特性[J].功能材料,2016,47(6):6022-6028.
[11]Ho S,Zanzotto L.The low temperature properties of conventional and modified asphalt binders evaluated by the failure energy and secant modulus from direct tension tests[J].Materials and Structures,2005,38(1):137-143.
[2]Zhang F,Yu J.The research for high-performance SBR compound modified asphalt[J].Construction and Building Materials,2010,24(3):410-418.
[3]陈天泉.化学交联改善SBR改性沥青粘韧性能的试验研究[J].公路交通技术,2015(6):18-20.
[4]Zhang F,Hu C.Influence of aging on thermal behavior and characterization of SBR compound-modified asphalt[J].Journal of Thermal Analysis and Calorimetry,2014,115(2):1211-1218.
[5]丛玉凤,徐磊,黄玮,等.SBS-C9石油树脂改性沥青的研究[J].建筑材料学报,2016,19(3):602-605.
[6]孙艳娜,李立寒.几种改性沥青粘弹性与高温性能的评价与分析[J].公路工程,2008,33(4):79-83.
[7]Fernandes M R S,Forte M M C,Leite L F M.Rheological evaluation of polymer-modified asphalt binders[J].Materials Research,2008,11(3):381-386.
[8]Wang L,Chang C.Rheological evaluation of polymer modified asphalt binders[J].Journal of Wuhan University of Technology-Mater Sci Ed,2015,30(4):695-702.
[9]田卫群,周彬,丛菱,等.改性沥青混合料高温性能及其评价方法[J].建筑材料学报,2009,12(3):285-287,291.
[10]李超,邬迪,王子豪,等.多聚磷酸改性沥青结合料高低温流变特性[J].功能材料,2016,47(6):6022-6028.
[11]Ho S,Zanzotto L.The low temperature properties of conventional and modified asphalt binders evaluated by the failure energy and secant modulus from direct tension tests[J].Materials and Structures,2005,38(1):137-143.