“再生-改性”沥青性能研究
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摘要
目的研究在再生剂和不同掺量改性剂作用下取得的"再生-改性"沥青的性能,为沥青路面再生-改性技术提供试验和理论依据.方法采用两种再生方案对老化沥青进行再生处理,对再生后的沥青进行针入度、软化点、延度、布氏黏度、动态剪切流变和弯曲梁流变等系列试验.结果采用添加再生剂方案再生的沥青其针入度、软化点、延度、车辙因子、临界温度、主曲线、劲度模量和蠕变速率与原样沥青非常接近;采用再生剂加改性剂的再生-改性方案可显著提升沥青的高温抗车辙和低温抗开裂的能力,且随着改性剂掺量的增加"再生-改性"沥青的高低温性能均逐渐增强.结论采用单一添加再生剂的普通再生方案可恢复沥青的高低温性能,采用再生-改性方案再生后沥青的高低温性能均显著优于原样沥青和普通再生沥青.
The purpose of this paper is to study the performance of recycled-modified asphalt under rejuvenating agent and different contents of modifiers,and to provide a experimental and theoretical basis for asphalt pavement recycling and modification technology.The aged asphalt was recovered by two recycling schemes,and the three indexes of bitumen,Brookfield viscosity,dynamic shear rheology and bending beam rheology tests were performed on the recycled asphalt samples.The results indicated that the three indexes of bitumen,rutting resistance,critical temperature,master curves,stiffness and creep rate of the asphalt binder recovered by the rejuvenating agent were very close to those of the original asphalt.The performance of the high temperature rutting resistance and low temperature anti-cracking of the asphalt binders can be significantly improved through the scheme of adding the rejuvenating agent and modifier.Moreover,the high and low temperature performance of recycled-modified asphalt was enhanced with the increase of the modifier content.The conclusion is that the high and low temperature performance of asphalt can be restored by adopting the scheme of solely adding rejuvenating agent,while the high and low temperature performance of asphalt that regenerated by the recycled and modified scheme are significantly better than that of the original asphalt and asphalt recoverd by the rejuvenating agent.
The purpose of this paper is to study the performance of recycled-modified asphalt under rejuvenating agent and different contents of modifiers,and to provide a experimental and theoretical basis for asphalt pavement recycling and modification technology.The aged asphalt was recovered by two recycling schemes,and the three indexes of bitumen,Brookfield viscosity,dynamic shear rheology and bending beam rheology tests were performed on the recycled asphalt samples.The results indicated that the three indexes of bitumen,rutting resistance,critical temperature,master curves,stiffness and creep rate of the asphalt binder recovered by the rejuvenating agent were very close to those of the original asphalt.The performance of the high temperature rutting resistance and low temperature anti-cracking of the asphalt binders can be significantly improved through the scheme of adding the rejuvenating agent and modifier.Moreover,the high and low temperature performance of recycled-modified asphalt was enhanced with the increase of the modifier content.The conclusion is that the high and low temperature performance of asphalt can be restored by adopting the scheme of solely adding rejuvenating agent,while the high and low temperature performance of asphalt that regenerated by the recycled and modified scheme are significantly better than that of the original asphalt and asphalt recoverd by the rejuvenating agent.
引文
[1] 聂忆华,康彦晶,刘苹.旧沥青路面厂拌热再生利用经济效益分析模型研究[J].公路工程,2013,38(4):120-123.(NIE Yihua,KANG Yanjing,LIU Ping.Economic benefits analysis model of hot plant-mix recycling asphalt pavements[J].Highway engineering,2013,38(4):120-123.)
[2] 张道义,屈言宾,赵永利,等.对再生沥青进行改性的可行性分析[J].石油沥青,2008,22(1):69-71.(ZHANG Daoyi,QU Yanbin,ZHAO Yongli,et al.The feasibility analysis of modifying the recycled asphalt[J].Petroleum asphalt,2008,22(1):69-71.)
[3] 陈静云.沥青路面再生方法的试验研究[D].大连:大连理工大学,2011.(CHEN Jingyun.Experimental study on recycling methods of asphalt pavements[D].Dalian:Dalian University of Technology,2011.)
[4] 李时雨.再生沥青改性的机理与试验研究[D].大连:大连理工大学,2015.(LI Shiyu.Study on the mechanism and experiment of modified regenerated asphalt[D].Dalian:Dalian University of Technology,2015.)
[5] 俞志龙.厂拌热再生沥青混合料路用性能及施工工艺研究[D].重庆:重庆交通大学,2013.(YU Zhilong.Research on the pavement performance and construction technology of hot mix plant recycling[D].Chongqing:Chongqing Jiaotong University,2013.)
[6] MA T,YUAN H.Aging Behavior Characterization of SBS-modified Asphalt for Recycling Purpose[C].Design:Performance,and Application,2013.
[7] SUN L,WANG Y,ZHANG Y.Aging mechanism and effective recycling ratio of SBS modified asphalt[J].Construction and building materials,2014,70(70):26-35.
[8] AASHTO T 240-13.Standard method of test for effect of heat and air on a moving film of asphalt(rolling thin-film oven test)[S].Washington DC:AASHTO,2013.
[9] 陈静云,李楗,王维营.不同老化沥青掺量下的温拌再生沥青性能研究[J].沈阳建筑大学学报(自然科学版),2017,33(5):863-869.(CHEN Jingyun,LI Jian,WANG Weiying.Performance of warm recycled asphalt binders with different aged asphalt percentage[J].Journal of Shenyang jianzhu university(natural science),2017,33(5):863-869.)
[10] CONG P,LUO W,XU P,et al.Investigation on recycling of SBS modified asphalt binders containing fresh asphalt and rejuvenating agents[J].Construction and building materials,2015,91:225-231.
[11] YAO H,DAI Q,YOU Z,et al.Rheological properties,low-temperature cracking resistance,and optical performance of exfoliated graphite nanoplatelets modified asphalt binder[J].Construction & building materials,2016,113:988-996.
[12] AASHTO T 316-13.Standard method of test for viscosity determination of asphalt binder using rotational viscometer[S].Washington DC:AASHTO,2013.
[13] 季节,武昊,索智,等.THFS对沥青感温性能的影响分析[J].沈阳建筑大学学报(自然科学版),2017(3):475-482.(JI Jie,WU Hao,SUO Zhi,et al.Analysis on temperature susceptibility of asphalt binder affected by THFS[J].Journal of Shenyang jianzhu university(natural science),2017(3):475-482.)
[14] 李雪连,周志刚,陈宇亮,等.Sasobit对SBS改性沥青性能的影响研究[J].实验力学,2015,30(3):331-338.(LI Xuelian,ZHOU Zhigang,CHEN Yuliang,et al.On the effect of Sasobit on the performance of SBS modified asphalt[J].Journal of experimental mechanics,2015,30(3):331-338.)
[15] XIAO F,AMIRKHANIAN S,WANG H,et al.Rheological property investigations for polymer and polyphosphoric acid modified asphalt binders at high temperatures[J].Construction and building materials,2014,64(12):316-323.
[16] The Asphalt Institute.Performance graded asphalt binder specification and testing,SP-1[M].Asphalt Institute,Lexington,2003.
[17] 孙依人.沥青混合料黏弹性表征及细观力学预测[D].大连:大连理工大学,2017.(SUN Yiren.Viscoealstic characterization and mesomechanical prediction of asphalt mixture[D].Dalian:Dalian University of Technology,2017.)
[18] OLARD F,DI BENEDETTO H.General “2S2P1D” model and relation between the linear viscoelastic behaviours of bituminous binders and mixes[J].Road materials and pavement design,2003,4(2):185-224.
[19] LIU S,CAO W,SHANG S,et al.Analysis and application of relationships between low-temperature rheological performance parameters of asphalt binders[J].Construction & building materials,2010,24(4):471-478.
[20] WANG W,CHEN J,SUN Y,et al.Laboratory performance analysis of high percentage artificial RAP binder with WMA additives[J].Construction and building materials,2017,147:58-65.
[21] 周庆华,沙爱民.高模量沥青混凝土蠕变特性研究[J].郑州大学学报(工学版),2012,33(4):23-27.(ZHOU Qinghua,SHA Aimin.Research on creep performance for high modulus asphalt concrete[J].Journal of Zhengzhou university(engineering science) ,2012,33(4):23-27.)
[22] 汤豆,连城.SBS掺量对改性沥青及其混合料低温性能影响[J].内蒙古公路与运输,2015(5):8-12.(TANG Dou,LIAN Cheng.Content on SBS modified asphalt and mix at low temperature performance[J].Highways and transportation in inner Mongolia,2015(5):8-12.)
[23] 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.(LI Chao,WU Di,WANG Zihao,et al.High and low temperature rheological properties of polyphosphoric acid modified asphalt binder[J].Journal of functional materials,2016,47(6):6022-6028.)
[24] 王琨,郝培文.BBR试验的沥青低温性能及粘弹性分析[J].辽宁工程技术大学学报(自然科学版),2016,35(10):1138-1143.(WANG Kun,HAO Peiwen.Analysis of asphalt low temperature performance and viscoelasticity based on BBR test[J].Journal of Liaoning technical university (natural science),2016,35(10):1138-1143.)
[2] 张道义,屈言宾,赵永利,等.对再生沥青进行改性的可行性分析[J].石油沥青,2008,22(1):69-71.(ZHANG Daoyi,QU Yanbin,ZHAO Yongli,et al.The feasibility analysis of modifying the recycled asphalt[J].Petroleum asphalt,2008,22(1):69-71.)
[3] 陈静云.沥青路面再生方法的试验研究[D].大连:大连理工大学,2011.(CHEN Jingyun.Experimental study on recycling methods of asphalt pavements[D].Dalian:Dalian University of Technology,2011.)
[4] 李时雨.再生沥青改性的机理与试验研究[D].大连:大连理工大学,2015.(LI Shiyu.Study on the mechanism and experiment of modified regenerated asphalt[D].Dalian:Dalian University of Technology,2015.)
[5] 俞志龙.厂拌热再生沥青混合料路用性能及施工工艺研究[D].重庆:重庆交通大学,2013.(YU Zhilong.Research on the pavement performance and construction technology of hot mix plant recycling[D].Chongqing:Chongqing Jiaotong University,2013.)
[6] MA T,YUAN H.Aging Behavior Characterization of SBS-modified Asphalt for Recycling Purpose[C].Design:Performance,and Application,2013.
[7] SUN L,WANG Y,ZHANG Y.Aging mechanism and effective recycling ratio of SBS modified asphalt[J].Construction and building materials,2014,70(70):26-35.
[8] AASHTO T 240-13.Standard method of test for effect of heat and air on a moving film of asphalt(rolling thin-film oven test)[S].Washington DC:AASHTO,2013.
[9] 陈静云,李楗,王维营.不同老化沥青掺量下的温拌再生沥青性能研究[J].沈阳建筑大学学报(自然科学版),2017,33(5):863-869.(CHEN Jingyun,LI Jian,WANG Weiying.Performance of warm recycled asphalt binders with different aged asphalt percentage[J].Journal of Shenyang jianzhu university(natural science),2017,33(5):863-869.)
[10] CONG P,LUO W,XU P,et al.Investigation on recycling of SBS modified asphalt binders containing fresh asphalt and rejuvenating agents[J].Construction and building materials,2015,91:225-231.
[11] YAO H,DAI Q,YOU Z,et al.Rheological properties,low-temperature cracking resistance,and optical performance of exfoliated graphite nanoplatelets modified asphalt binder[J].Construction & building materials,2016,113:988-996.
[12] AASHTO T 316-13.Standard method of test for viscosity determination of asphalt binder using rotational viscometer[S].Washington DC:AASHTO,2013.
[13] 季节,武昊,索智,等.THFS对沥青感温性能的影响分析[J].沈阳建筑大学学报(自然科学版),2017(3):475-482.(JI Jie,WU Hao,SUO Zhi,et al.Analysis on temperature susceptibility of asphalt binder affected by THFS[J].Journal of Shenyang jianzhu university(natural science),2017(3):475-482.)
[14] 李雪连,周志刚,陈宇亮,等.Sasobit对SBS改性沥青性能的影响研究[J].实验力学,2015,30(3):331-338.(LI Xuelian,ZHOU Zhigang,CHEN Yuliang,et al.On the effect of Sasobit on the performance of SBS modified asphalt[J].Journal of experimental mechanics,2015,30(3):331-338.)
[15] XIAO F,AMIRKHANIAN S,WANG H,et al.Rheological property investigations for polymer and polyphosphoric acid modified asphalt binders at high temperatures[J].Construction and building materials,2014,64(12):316-323.
[16] The Asphalt Institute.Performance graded asphalt binder specification and testing,SP-1[M].Asphalt Institute,Lexington,2003.
[17] 孙依人.沥青混合料黏弹性表征及细观力学预测[D].大连:大连理工大学,2017.(SUN Yiren.Viscoealstic characterization and mesomechanical prediction of asphalt mixture[D].Dalian:Dalian University of Technology,2017.)
[18] OLARD F,DI BENEDETTO H.General “2S2P1D” model and relation between the linear viscoelastic behaviours of bituminous binders and mixes[J].Road materials and pavement design,2003,4(2):185-224.
[19] LIU S,CAO W,SHANG S,et al.Analysis and application of relationships between low-temperature rheological performance parameters of asphalt binders[J].Construction & building materials,2010,24(4):471-478.
[20] WANG W,CHEN J,SUN Y,et al.Laboratory performance analysis of high percentage artificial RAP binder with WMA additives[J].Construction and building materials,2017,147:58-65.
[21] 周庆华,沙爱民.高模量沥青混凝土蠕变特性研究[J].郑州大学学报(工学版),2012,33(4):23-27.(ZHOU Qinghua,SHA Aimin.Research on creep performance for high modulus asphalt concrete[J].Journal of Zhengzhou university(engineering science) ,2012,33(4):23-27.)
[22] 汤豆,连城.SBS掺量对改性沥青及其混合料低温性能影响[J].内蒙古公路与运输,2015(5):8-12.(TANG Dou,LIAN Cheng.Content on SBS modified asphalt and mix at low temperature performance[J].Highways and transportation in inner Mongolia,2015(5):8-12.)
[23] 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.(LI Chao,WU Di,WANG Zihao,et al.High and low temperature rheological properties of polyphosphoric acid modified asphalt binder[J].Journal of functional materials,2016,47(6):6022-6028.)
[24] 王琨,郝培文.BBR试验的沥青低温性能及粘弹性分析[J].辽宁工程技术大学学报(自然科学版),2016,35(10):1138-1143.(WANG Kun,HAO Peiwen.Analysis of asphalt low temperature performance and viscoelasticity based on BBR test[J].Journal of Liaoning technical university (natural science),2016,35(10):1138-1143.)
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