生物油再生沥青胶结料路用性能分析
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摘要
为研究生物油再生沥青胶结料的路用性能,分析比较了基质沥青与生物油再生沥青胶结料的流变性质与化学特性。首先通过三大指标与黏度测试确定生物油在老化沥青中的最佳掺量;之后重点分析最佳生物油掺量下再生沥青与基质沥青的高温与疲劳性能,高温性能通过多应力蠕变回复试验(MSCR)测试,疲劳性能通过DSR时间扫描测试;最后利用红外光谱(FTIR)和凝胶渗透色谱(GPC)测试分析2种沥青的化学特性。研究结果表明:10%生物油可恢复老化沥青针入度与延度至基质沥青水平;基质沥青与10%生物油再生沥青的PG分级分别为PG64-16与PG70-16;MSCR结果表明再生沥青相比基质沥青具有较好的高温性能;N_(f50)指标表明再生沥青的抗疲劳性能较基质沥青胶结料更好,因为2种沥青模量相近,再生沥青的弹性组分含量更高;FTIR结果表明生物油稀释了老化沥青中高极性的亚砜基;GPC结果表明生物油降低了老化沥青中的大分子和小分子含量,改善了老化沥青分子量分散度。生物油改善了老化沥青的路用性能和化学特性,是一种较有潜力的沥青再生剂。
To investigate the pavement properties of bio-oil rejuvenated asphalt, the rheological properties and chemical characterization of virgin and rejuvenated asphalt binders were compared. First, the optimum content of bio-oil in aged asphalt was determined by using penetration, softening point, ductility, and rotary viscosity tests. Second, the rutting and fatigue properties of bio-oil rejuvenated and virgin asphalt binders were analyzed, with the rutting property tested via a multi-stress creep recovery test(MSCR) and the fatigue property tested by using a dynamic shear rheometer time sweep. Finally, the chemical characterization of asphalt binders was analyzed by Fourier-transform infrared spectrometry(FTIR) and gel permeation chromatography(GPC). The results show that with a dosage of 10% bio-oil, aged asphalt penetration and ductility are recovered to the level of virgin asphalt. Virgin asphalt and rejuvenated asphalt with 10% bio-oil are PG64-16 and PG70-16, respectively. MSCR results indicate that rejuvenated asphalt has a better rutting property than virgin asphalt. N_(f50) results indicate that rejuvenated asphalt has a better fatigue property than virgin asphalt because rejuvenated asphalt has a higher elastic composition content with a similar modulus. FTIR results indicate that the sulfoxide group with high polarity in aged asphalt is diluted by bio-oil. GPC results indicate that the large molecule size(LMS) and small molecule size(SMS) dosages of aged asphalt are decreased by bio-oil, and the molecular weight polydispersity of aged asphalt is improved by bio-oil. Bio-oil exhibits the potential of being a promising rejuvenator owing to its effective improvement of pavement properties and chemical characterization of aged asphalt.
To investigate the pavement properties of bio-oil rejuvenated asphalt, the rheological properties and chemical characterization of virgin and rejuvenated asphalt binders were compared. First, the optimum content of bio-oil in aged asphalt was determined by using penetration, softening point, ductility, and rotary viscosity tests. Second, the rutting and fatigue properties of bio-oil rejuvenated and virgin asphalt binders were analyzed, with the rutting property tested via a multi-stress creep recovery test(MSCR) and the fatigue property tested by using a dynamic shear rheometer time sweep. Finally, the chemical characterization of asphalt binders was analyzed by Fourier-transform infrared spectrometry(FTIR) and gel permeation chromatography(GPC). The results show that with a dosage of 10% bio-oil, aged asphalt penetration and ductility are recovered to the level of virgin asphalt. Virgin asphalt and rejuvenated asphalt with 10% bio-oil are PG64-16 and PG70-16, respectively. MSCR results indicate that rejuvenated asphalt has a better rutting property than virgin asphalt. N_(f50) results indicate that rejuvenated asphalt has a better fatigue property than virgin asphalt because rejuvenated asphalt has a higher elastic composition content with a similar modulus. FTIR results indicate that the sulfoxide group with high polarity in aged asphalt is diluted by bio-oil. GPC results indicate that the large molecule size(LMS) and small molecule size(SMS) dosages of aged asphalt are decreased by bio-oil, and the molecular weight polydispersity of aged asphalt is improved by bio-oil. Bio-oil exhibits the potential of being a promising rejuvenator owing to its effective improvement of pavement properties and chemical characterization of aged asphalt.
引文
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[16] ZHANG L,BAHIA H,TAN Y Q.Effect of Bio-based and Refined Waste Oil Modifiers on Low Temperature Performance of Asphalt Binders [J].Construction and Building Materials,2015,86:95-100.
[17] WEN H,BHUSAL S,WEN B.Laboratory Evaluation of Waste Cooking Oil-based Bioasphalt as an Alternative Binder for Hot Mix Asphalt [J].Journal of Materials in Civil Engineering,2013,25 (10):1432-1437
[18] SUN Z,YI J,HUANG Y,et al.Properties of Asphalt Binder Modified by Bio-oil Derived from Waste Cooking Oil [J].Construction and Building Materials,2016,102:496-504.
[19] 徐骁龙,叶奋,宋卿卿,等.沥青疲劳评价指标试验研究[J].华东交通大学学报,2014,31(2):14-19.XU Xiao-long,YE Fen,SONG Qing-qing,et al.Investigation of Fatigue Evaluating Indexes of Asphalt [J].Journal of East China Jiaotong University,2014,31 (2):14-19.
[20] 张肖宁,孟勇军,邹桂莲.基于重复蠕变的改性沥青高温指标[J].华南理工大学学报:自然科学版,2008,36(2):23-28.ZHANG Xiao-ning,MENG Yong-jun,ZOU Gui-lian.High-temperature Index of Modified Asphalt Based on Repeated Creep [J].Journal of South China University of Technology:Natural Science Edition,2008,36 (2):23-28.
[21] ZHAO S,BOWERS B,HUANG B,et al.Characterizing Rheological Properties of Binder and Blending Efficiency of Asphalt Paving Mixtures Containing RAS through GPC [J].Journal of Materials in Civil Engineering,2014,26 (5):941-946.
[22] YANG S H,LEE L C.Characterizing the Chemical and Rheological Properties of Severely Aged Reclaimed Asphalt Pavement Materials with High Recycling Rate [J].Construction and Building Materials,2016,111:139-146.
[23] 李进.沥青再生剂扩散行为及其影响因素研究[D].北京:中国石油大学,2010.LI Jin.Study on the Diffusion Behavior of Asphalt Rejuvenator and Influence Factors [D].Beijing:China University of Petroleum,2010.
[24] BOWERS B F,HUANG B,SHU X,et al.Investigation of Reclaimed Asphalt Pavement Blending Efficiency Through GPC and FTIR [J].Construction and Building Materials,2014,50:517-523.
[2] ZAUMANIS M,MALLICK R B,FRANK R.100% Recycled Hot Mix Asphalt:A Review and Analysis [J].Resources,Conservation and Recycling,2014,92:230-245.
[3] VIDAL R,MOLINER E,MARTíNEZ G,et al.Life Cycle Assessment of Hot Mix Asphalt and Zeolite-based Warm Mix Asphalt with Reclaimed Asphalt Pavement [J].Resources,Conservation and Recycling,2013,74:101-114.
[4] AURANGZEB Q,AL-QADI I L,OZER H,et al.Hybrid Life Cycle Assessment for Asphalt Mixtures with High RAP Content [J].Resources,Conservation and Recycling,2014,83:77-86.
[5] LI X,CLYNE T R,MARASTEANU M O.Recycled Asphalt Pavement (RAP) Effects on Binder and Mixture Quality [D].Minneapolis:University of Minnesota,2004.
[6] WISER L.Results of Long-term Pavement Performance SPS-3 Analysis:Preventive Maintenance of Flexible Pavements [R].Mclean:Federal Highway Administration,2011.
[7] IM S,ZHOU F.Field Performance of RAS Test Sections and Laboratory Investigation of Impact of Rejuvenators on Engineering Properties of RAP/RAS Mixes [D].San Antoaio:Texas A & M Transportation Institute,2014.
[8] MCDANIEL R,SHAH A,HUBER G A,et al.Effects of Reclaimed Asphalt Pavement Content and Virgin Binder Grade on Properties of Plant Produced Mixtures [J].Road Materials & Pavement Design,2012,13 (S1):161-182.
[9] AL-QADI I L,AURANGZEB Q,CARPENTER S H,et al.Impact of High RAP Contents on Structural and Performance Properties of Asphalt Mixtures [D].Rantoul:Illinois Center for Transportation,2012.
[10] ERHAN S Z,ASADAUSKAS S.Lubricant Basestocks from Vegetable Oils [J].Industrial Crops and Products,2000,11 (2):277-282.
[11] SHARMA V,KUNDU P P.Addition Polymers from Natural Oils—A Review [J].Progress in Polymer Science,2006,31 (11):983-1008.
[12] ASLI H,AHMADINIA E,ZARGAR M,et al.Investigation on Physical Properties of Waste Cooking Oil-rejuvenated Bitumen Binder [J].Construction and Building Materials,2012,37 (12):398-405.
[13] CHEN M,XIAO F,PUTMAN B,et al.High Temperature Properties of Rejuvenating Recovered Binder with Rejuvenator,Waste Cooking and Cotton Seed Oils [J].Construction and Building Materials,2014,59:10-16.
[14] ZARGAR M,AHMADINIA E,ASLI H,et al.Investigation of the Possibility of Using Waste Cooking Oil as a Rejuvenating Agent for Aged Bitumen [J].Journal of Hazardous Materials,2012,233-234:254-258.
[15] TABATABAEE H A,KURTH T L.Analytical Investigation of the Impact of a Novel Bio-based Recycling Agent on the Colloidal Stability of Aged Bitumen [J].Road Materials and Pavement Design,2017,18 (S2):1-10.
[16] ZHANG L,BAHIA H,TAN Y Q.Effect of Bio-based and Refined Waste Oil Modifiers on Low Temperature Performance of Asphalt Binders [J].Construction and Building Materials,2015,86:95-100.
[17] WEN H,BHUSAL S,WEN B.Laboratory Evaluation of Waste Cooking Oil-based Bioasphalt as an Alternative Binder for Hot Mix Asphalt [J].Journal of Materials in Civil Engineering,2013,25 (10):1432-1437
[18] SUN Z,YI J,HUANG Y,et al.Properties of Asphalt Binder Modified by Bio-oil Derived from Waste Cooking Oil [J].Construction and Building Materials,2016,102:496-504.
[19] 徐骁龙,叶奋,宋卿卿,等.沥青疲劳评价指标试验研究[J].华东交通大学学报,2014,31(2):14-19.XU Xiao-long,YE Fen,SONG Qing-qing,et al.Investigation of Fatigue Evaluating Indexes of Asphalt [J].Journal of East China Jiaotong University,2014,31 (2):14-19.
[20] 张肖宁,孟勇军,邹桂莲.基于重复蠕变的改性沥青高温指标[J].华南理工大学学报:自然科学版,2008,36(2):23-28.ZHANG Xiao-ning,MENG Yong-jun,ZOU Gui-lian.High-temperature Index of Modified Asphalt Based on Repeated Creep [J].Journal of South China University of Technology:Natural Science Edition,2008,36 (2):23-28.
[21] ZHAO S,BOWERS B,HUANG B,et al.Characterizing Rheological Properties of Binder and Blending Efficiency of Asphalt Paving Mixtures Containing RAS through GPC [J].Journal of Materials in Civil Engineering,2014,26 (5):941-946.
[22] YANG S H,LEE L C.Characterizing the Chemical and Rheological Properties of Severely Aged Reclaimed Asphalt Pavement Materials with High Recycling Rate [J].Construction and Building Materials,2016,111:139-146.
[23] 李进.沥青再生剂扩散行为及其影响因素研究[D].北京:中国石油大学,2010.LI Jin.Study on the Diffusion Behavior of Asphalt Rejuvenator and Influence Factors [D].Beijing:China University of Petroleum,2010.
[24] BOWERS B F,HUANG B,SHU X,et al.Investigation of Reclaimed Asphalt Pavement Blending Efficiency Through GPC and FTIR [J].Construction and Building Materials,2014,50:517-523.