橡胶沥青配伍性及黏附性能研究
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摘要
为了评价橡胶沥青配伍性及黏附性能,选取5种不同油源基质沥青加工得到橡胶沥青,分析基质沥青组分、胶粉掺量与橡胶沥青常规性能的关联性;基于表面自由能理论,通过测定橡胶沥青的表面自由能及其参数,考察基质沥青组分、胶粉的含量、薄膜烘箱热老化及紫外光老化对橡胶沥青黏附性能的影响。结果表明:橡胶沥青针入度、软化点、延度指标受基质沥青性质影响明显,胶质和沥青质含量较高的沥青加工得到的橡胶沥青针入度小、软化点高、运动黏度较大;若生产用于热区,基质沥青宜选择重组分含量多的70~#基质沥青或者50~#沥青;随着胶粉含量的增加,橡胶沥青针入度减小、软化点升高,但其延度值较为接近,胶粉含量宜根据沥青组分信息确定掺加量;橡胶沥青在高温条件下储存会使其黏度下降,在180℃条件下储存8 h黏度将会下降60%,橡胶沥青在生产使用过程中应降低温度储存,高温下储存时间不宜超过8 h;随着胶粉掺量的增大,橡胶沥青的表面能增大;经过5,10,15 h薄膜烘箱热老化后沥青表面能呈现增大趋势,但老化后表面能变化率较小;紫外老化对橡胶沥青表面能性质影响不明显,组分不同的基质沥青加工得到的橡胶沥青经过10,20 d紫外光老化后表面能变化趋势不同。橡胶沥青的表面能主要受基质沥青品质的影响,受热老化时间和胶粉含量影响较小。
In order to evaluate the compatibility and adhesion property of rubber asphalt, the rubber asphalts are processed from of the selected 5 different matrix asphalts, and the correlation among asphalt components, crumb rubber content and conventional property of rubber asphalt is analyzed. Based on the theory of surface free energy, the influence of asphalt component, crumb rubber content, thin film oven aging testing and ultraviolet aging on the adhesion property of rubber asphalt are investigated by measuring the surface free energy and its parameters. The result shows that(1) the penetration, softening point and ductility of rubber asphalt are obviously affected by the property of matrix asphalt. The rubber asphalt processed by the matrix asphalt with high resin and asphaltene contents has low penetration, high softening point and viscosity;(2) if the production is used in hot area, 70~# or 50~# matrix asphalt with high content of heavy component is suitable;(3) with the increase of crumb rubber content, the penetration reduces and softening point increases, but their ductility values are closer; the rubber powder content should be determined according to the information of asphalt components;(4)the viscosity will decrease when rubber asphalt is stored at high temperature, and the viscosity will decrease by 60% after stored 8 h at 180 ℃, so the rubber asphalt should be stored at lower temperature during producing and using, and the storage time at high temperature should not exceed 8 h;(5) the surface energy of rubber asphalt increases with the increase of crumb rubber content;(6)after thin film oven aging testing of 5, 10,15 h, the surface energy of rubber asphalt increases, but the change rate is smaller;(7) the effect of UV aging on the surface property of rubber asphalt is not obvious, the change trends of surface energy of the rubber asphalts processed by different components of matrix asphalt after 10 d and 20 d UV aging are different;(8) the surface energy of rubber asphalt is mainly affected by the quality of matrix asphalt, while the thermal aging time and the content of rubber powder have little effect.
In order to evaluate the compatibility and adhesion property of rubber asphalt, the rubber asphalts are processed from of the selected 5 different matrix asphalts, and the correlation among asphalt components, crumb rubber content and conventional property of rubber asphalt is analyzed. Based on the theory of surface free energy, the influence of asphalt component, crumb rubber content, thin film oven aging testing and ultraviolet aging on the adhesion property of rubber asphalt are investigated by measuring the surface free energy and its parameters. The result shows that(1) the penetration, softening point and ductility of rubber asphalt are obviously affected by the property of matrix asphalt. The rubber asphalt processed by the matrix asphalt with high resin and asphaltene contents has low penetration, high softening point and viscosity;(2) if the production is used in hot area, 70~# or 50~# matrix asphalt with high content of heavy component is suitable;(3) with the increase of crumb rubber content, the penetration reduces and softening point increases, but their ductility values are closer; the rubber powder content should be determined according to the information of asphalt components;(4)the viscosity will decrease when rubber asphalt is stored at high temperature, and the viscosity will decrease by 60% after stored 8 h at 180 ℃, so the rubber asphalt should be stored at lower temperature during producing and using, and the storage time at high temperature should not exceed 8 h;(5) the surface energy of rubber asphalt increases with the increase of crumb rubber content;(6)after thin film oven aging testing of 5, 10,15 h, the surface energy of rubber asphalt increases, but the change rate is smaller;(7) the effect of UV aging on the surface property of rubber asphalt is not obvious, the change trends of surface energy of the rubber asphalts processed by different components of matrix asphalt after 10 d and 20 d UV aging are different;(8) the surface energy of rubber asphalt is mainly affected by the quality of matrix asphalt, while the thermal aging time and the content of rubber powder have little effect.
引文
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[9]彭刚.基于正交试验的温拌橡胶沥青稳定性研究[J].华东交通大学学报,2016,33(5):12-17.PENG Gang.Study on Study on Stability of Rubberized Warm Asphalt Based on Orthogonal Experiment[J].Journal of East China Jiaotong University,2016,33(5):12-17.
[10]何亮,黄晓明,马育,等.橡胶改性沥青储存稳定性试验研究[J].东南大学学报:自然科学版,2011,41(5):1086-1091.HE Liang,HUANG Xiao-ming,MA Yu,et al.Experimental Study on Storage Stability of Crumb Rubber Modified Asphalt[J].Journal of Southeast University:Natural Science Edition,2011,41(5):1086-1091.
[11]JANSSEN D,DE PALMA R,VERLAAK S,et al.Static Solvent Contact Angle Measurements,Surface Free Energy and Wettability Determination of Various Self-assembled Monolayers on Silicon Dioxide[J].Thin Solid Films,2006,515(4):1433-1438.
[12]KWOK D Y,GIETZELT T,GRUNDKE K,et al.Contact Angle Measurements and Contact Angle Interpretation.1.Contact Angle Measurements by Axisymmetric Drop Shape Analysis and a Goniometer Sessile Drop Technique[J].Langmuir,1997,13(10):2880-2894.
[13]KWOK D Y,NEUMANN A W.Contact Angle Measurement and Contact Angle Interpretation[J].Advances in Colloid and Interface Science,1999,81(3):167-249.
[14]赵华,廖克俭,李英刚.废旧胶粉改性沥青抗老化性能及效益分析[J].化工科技,2010,18(6):9-12.ZHAO Hua,LIAO Ke-jian,LI Ying-gang.Analysis on the Anti-ageing Performance and Benefit of Crumb Tire Rubber Modified Asphalt[J].Science and Technology in Chemical Industry,2010,18(6):9-12.
[15]徐东,王新宽,陈博.橡胶沥青混合料老化再生及其路用性能研究[J].武汉理工大学学报,2012,34(10):48-52.XU Dong,WANG Xin-kuan,CHEN Bo.Research on Properties of Reclaimed Rubber Modified Asphalt Mixture[J].Journal of Wuhan University of Technology,2012,34(10):48-52.
[16]滕旭秋,费占黎,文华,等.多因素作用下橡胶沥青老化特性研究[J].兰州交通大学学报,2016,35(4):1-5.TEND Xu-qiu,FEI Zhan-li,WEN Hua,et al.Study on Aging Characteristics of Rubber Asphalt in Consideration of Multiple Factors[J].Journal of Lanzhou Jiaotong University,2016,35(4):1-5.
[17]沈燕,康爱红,王超,等.橡胶沥青混合料中橡胶沥青老化程度的表征[J].合成橡胶工业,2017,40(6):467-472.SHEN Yan,KANG Ai-hong,WANG Chao,et al.Characterization of Aging Degree of Rubber Asphalt in Rubber Asphalt Mixture[J].China Synthetic Rubber Industry,2017,40(6):467-472.
[18]肖鹏,吴美平,蒋德安.橡胶沥青紫外光老化性能试验研究[J].南京航空航天大学学报,2013,45(1):152-156.XIAO Peng,WU Mei-ping,JIANG De-an.Study on Properties of Ultraviolet Aged Rubber Asphalt[J].Journal of Nanjing University of Aeronautics&Astronautics,2013,45(1):152-156.
[2]SHEN J,AMIRKHANIAN S N.The Influence of Crumb Rubber Modifier(CRM)Microstructures on the High Temperature Properties of CRM Binders[J].International Journal of Pavement Engineering,2005,6(4):265-271.
[3]郭朝阳.废胎胶粉橡胶沥青应用技术研究[D].重庆:重庆交通大学,2008.GUO Chao-yang.Study on Application Technology of Crumb Tire Rubber Asphalt[D].Chongqing:Chongqing Jiaotong University,2008.
[4]王旭东,李美江,路凯冀,等.橡胶沥青及混凝土应用成套技术[M].北京:人民交通出版社,2008.WANG Xu-dong,LI Mei-jiang,LU Kai-ji,et al.The Applied Technology of the Crumb Rubber in the Asphalt and Mixture[M].Beijing:China Communications Press,2008.
[5]孙祖望,陈飙.橡胶沥青技术应用指南[M].北京:人民交通出版社,2007.SUN Zu-wang,CHEN Biao.Application Guide for Rubber Asphalt[M].Beijing:China Communications Press,2007.
[6]MULL M A,STUART K,YEHIA A.Fracture Resistance Characterization of Chemically Modifier Crumb Rubber Asphalt Pavement[J].Journal of Materials Science,2002,37(3):557-566.
[7]张文武.废胎胶粉改性沥青机理研究[D].重庆:重庆交通大学,2009.ZHANG Wen-wu.Study on Mechanism of Crumb Rubber Modified Asphalt[D].Chongqing:Chongqing Jiaotong University,2009.
[8]李煜.橡胶沥青生产工艺应用研究[D].济南:山东大学,2013.LI Yu.Study on Rubber Asphalt Production Technology Application[D].Jinan:Shandong University,2013.
[9]彭刚.基于正交试验的温拌橡胶沥青稳定性研究[J].华东交通大学学报,2016,33(5):12-17.PENG Gang.Study on Study on Stability of Rubberized Warm Asphalt Based on Orthogonal Experiment[J].Journal of East China Jiaotong University,2016,33(5):12-17.
[10]何亮,黄晓明,马育,等.橡胶改性沥青储存稳定性试验研究[J].东南大学学报:自然科学版,2011,41(5):1086-1091.HE Liang,HUANG Xiao-ming,MA Yu,et al.Experimental Study on Storage Stability of Crumb Rubber Modified Asphalt[J].Journal of Southeast University:Natural Science Edition,2011,41(5):1086-1091.
[11]JANSSEN D,DE PALMA R,VERLAAK S,et al.Static Solvent Contact Angle Measurements,Surface Free Energy and Wettability Determination of Various Self-assembled Monolayers on Silicon Dioxide[J].Thin Solid Films,2006,515(4):1433-1438.
[12]KWOK D Y,GIETZELT T,GRUNDKE K,et al.Contact Angle Measurements and Contact Angle Interpretation.1.Contact Angle Measurements by Axisymmetric Drop Shape Analysis and a Goniometer Sessile Drop Technique[J].Langmuir,1997,13(10):2880-2894.
[13]KWOK D Y,NEUMANN A W.Contact Angle Measurement and Contact Angle Interpretation[J].Advances in Colloid and Interface Science,1999,81(3):167-249.
[14]赵华,廖克俭,李英刚.废旧胶粉改性沥青抗老化性能及效益分析[J].化工科技,2010,18(6):9-12.ZHAO Hua,LIAO Ke-jian,LI Ying-gang.Analysis on the Anti-ageing Performance and Benefit of Crumb Tire Rubber Modified Asphalt[J].Science and Technology in Chemical Industry,2010,18(6):9-12.
[15]徐东,王新宽,陈博.橡胶沥青混合料老化再生及其路用性能研究[J].武汉理工大学学报,2012,34(10):48-52.XU Dong,WANG Xin-kuan,CHEN Bo.Research on Properties of Reclaimed Rubber Modified Asphalt Mixture[J].Journal of Wuhan University of Technology,2012,34(10):48-52.
[16]滕旭秋,费占黎,文华,等.多因素作用下橡胶沥青老化特性研究[J].兰州交通大学学报,2016,35(4):1-5.TEND Xu-qiu,FEI Zhan-li,WEN Hua,et al.Study on Aging Characteristics of Rubber Asphalt in Consideration of Multiple Factors[J].Journal of Lanzhou Jiaotong University,2016,35(4):1-5.
[17]沈燕,康爱红,王超,等.橡胶沥青混合料中橡胶沥青老化程度的表征[J].合成橡胶工业,2017,40(6):467-472.SHEN Yan,KANG Ai-hong,WANG Chao,et al.Characterization of Aging Degree of Rubber Asphalt in Rubber Asphalt Mixture[J].China Synthetic Rubber Industry,2017,40(6):467-472.
[18]肖鹏,吴美平,蒋德安.橡胶沥青紫外光老化性能试验研究[J].南京航空航天大学学报,2013,45(1):152-156.XIAO Peng,WU Mei-ping,JIANG De-an.Study on Properties of Ultraviolet Aged Rubber Asphalt[J].Journal of Nanjing University of Aeronautics&Astronautics,2013,45(1):152-156.
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