植物油活化胶粉沥青流变及微观性能研究
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摘要
为提高胶粉在沥青中的溶解度,改善橡胶沥青高黏问题,探讨植物油用于胶粉活化的可行性,采用流变学试验,对不同种类助剂活化胶粉沥青的力学性能变化规律进行了研究,并结合红外光谱、凝胶渗透色谱试验(GPC)探究橡胶沥青微观结构变化。结果表明:植物油的降黏效果更好,但其活化后橡胶沥青的弹性性能及抗变形能力相对较差,红外光谱中C=C键含量相对较少,解释了其力学性能较弱;反式烯烃CH的产生和芳环C=C、共轭烯烃含量的增加验证了胶粉的脱硫、降解反应;GPC测试显示植物油活化胶粉沥青,中、大分子含量较多,说明其脱硫降解反应更剧烈。
In order to improve the solubility of rubber powder in asphalt and improve the high viscosity of rubberized asphalt,the feasibility of using vegetable oil for rubber powder activation is discussed,used rheological test to study the mechanical properties of different activators of rubberized asphalt,combined with infrared spectroscopy,gel permeation chromatography test( GPC) to explore the microstructure change of rubberized asphalt. The rheological property test shows that vegetable oil has better viscosity reducing effect,but the elastic property and deformation resistance of rubber asphalt are relatively poor after its activation; In the infrared spectrum,the production of trans olefin CH and the increase of the content of aromatic ring C = C and conjugated alkene verified the desulfurization and degradation reaction of rubber powder; In vegetable oil rubberized asphalt spectrum,the content of C = C bond is relatively small,which leads to weaker mechanical properties; GPC test showed that the content of molecular and macromolecular in vegetable oil activated rubber powder asphalt was higher,which indicated that the desulfurization and degradation reaction was more severe.
In order to improve the solubility of rubber powder in asphalt and improve the high viscosity of rubberized asphalt,the feasibility of using vegetable oil for rubber powder activation is discussed,used rheological test to study the mechanical properties of different activators of rubberized asphalt,combined with infrared spectroscopy,gel permeation chromatography test( GPC) to explore the microstructure change of rubberized asphalt. The rheological property test shows that vegetable oil has better viscosity reducing effect,but the elastic property and deformation resistance of rubber asphalt are relatively poor after its activation; In the infrared spectrum,the production of trans olefin CH and the increase of the content of aromatic ring C = C and conjugated alkene verified the desulfurization and degradation reaction of rubber powder; In vegetable oil rubberized asphalt spectrum,the content of C = C bond is relatively small,which leads to weaker mechanical properties; GPC test showed that the content of molecular and macromolecular in vegetable oil activated rubber powder asphalt was higher,which indicated that the desulfurization and degradation reaction was more severe.
引文
[1]李岩,张勇,张隐西.等离子体改性废橡胶胶粉及其与PVC共混复合材料的研究[J].高分子材料科学与程,2005(03):239-242.
[2]杨小龙,李波,刘祥,等.基于生产工艺参数的橡胶沥青改性机理研究[J].建筑材料学报,1-9.
[3]何东坡,王浩.汽油活化橡胶粉制备的橡胶沥青路用性能研究[J].中外公路,2013(04):288-291.
[4]肖敏敏,丁文胜.助剂活化废胶粉改性沥青性能机理研究[J].公路,2010(03):164-168.
[5]杨毅文,袁浩,马涛.脱硫橡胶沥青溶胀原理及路用性能[J].公路交通科技,2012(02):35-39.
[6]Ji J,Yao H,Suo Z,et al.Effectiveness of Vegetable Oils as Rejuvenators for Aged Asphalt Binders[J].Journal of Materials in Civil Engineering,2016,29(3):D4016003.
[7]罗源源.植物沥青今年上“路”试验[N].首都建设报,2013-06-24(001).
[8]索智,季节,满琦,等.植物油再生沥青的性能研究[J/OL].北京工业大学学报,2016,42(07):1062-1065.(2016-07-13)[2017-08-21].
[9]何敏,东伟,海燕,等.改性生物沥青常规性能研究[J].公路交通科技,2015,2(2):8-12.
[10]DAVIES G.Release agent formulas and methods:US6902606[P].2005-07-07.
[11]Yusoff N I M,Mounier D,Marc-Stéphane G,et al.Modelling the rheological properties of bituminous binders using the 2S2P1D Model[J].Construction&Building Materials,2013,38(40):395
[12]Asgharzadeh S M,Tabatabaee N,Naderi K,et al.An empirical model for modified bituminous binder master curves[J].Materials&Structures,2013,46(9):1459-1471.
[13]唐乃膨.溶解性胶粉改性沥青的反应机理与流变性能研究[D].上海:同济大学,2017.
[2]杨小龙,李波,刘祥,等.基于生产工艺参数的橡胶沥青改性机理研究[J].建筑材料学报,1-9.
[3]何东坡,王浩.汽油活化橡胶粉制备的橡胶沥青路用性能研究[J].中外公路,2013(04):288-291.
[4]肖敏敏,丁文胜.助剂活化废胶粉改性沥青性能机理研究[J].公路,2010(03):164-168.
[5]杨毅文,袁浩,马涛.脱硫橡胶沥青溶胀原理及路用性能[J].公路交通科技,2012(02):35-39.
[6]Ji J,Yao H,Suo Z,et al.Effectiveness of Vegetable Oils as Rejuvenators for Aged Asphalt Binders[J].Journal of Materials in Civil Engineering,2016,29(3):D4016003.
[7]罗源源.植物沥青今年上“路”试验[N].首都建设报,2013-06-24(001).
[8]索智,季节,满琦,等.植物油再生沥青的性能研究[J/OL].北京工业大学学报,2016,42(07):1062-1065.(2016-07-13)[2017-08-21].
[9]何敏,东伟,海燕,等.改性生物沥青常规性能研究[J].公路交通科技,2015,2(2):8-12.
[10]DAVIES G.Release agent formulas and methods:US6902606[P].2005-07-07.
[11]Yusoff N I M,Mounier D,Marc-Stéphane G,et al.Modelling the rheological properties of bituminous binders using the 2S2P1D Model[J].Construction&Building Materials,2013,38(40):395
[12]Asgharzadeh S M,Tabatabaee N,Naderi K,et al.An empirical model for modified bituminous binder master curves[J].Materials&Structures,2013,46(9):1459-1471.
[13]唐乃膨.溶解性胶粉改性沥青的反应机理与流变性能研究[D].上海:同济大学,2017.