膨胀石墨抑制沥青烟机理与抑烟沥青混合料动态性能
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摘要
为了有效抑制高温沥青烟释放,在路用沥青中掺入膨胀石墨,采用微观试验和沥青混合料动态性能试验研究了抑烟沥青混合料疲劳性能、黏弹性以及动态蠕变模量随温度、频率的变化规律。研究结果表明:高温下沥青中的轻质组分和多环芳烃能部分插入膨胀石墨层片间并形核结晶长大,或者吸附于膨胀石墨表面,晶格能和范德华力的束缚有效抑制了沥青烟的释放,且被剥离膨胀的石墨中已存在石墨烯片;抑烟沥青混合料疲劳寿命已接近SBS改性沥青混合料,且远高于普通沥青混合料;掺入膨胀石墨对沥青的黏弹性会产生显著影响;抑烟沥青混合料具有较好的高温稳定性、抑烟效果和路用性能。
In order to suppress the release of asphalt fume under the high temperature,expanded graphite was mixed with road asphalt.The micro-testing were applied to confirm that the light component and Polycyclic Aromatic Hydrocarbons(PAHs)in the asphalt plug in the expanded graphite layer partly between plates under the high temperature and make nucleation crystallization growth or are adsorbed on expanded graphite surface.The bondage of the lattice and the Van der Waals force can effectively suppress the release of asphalt fume.Meanwhile,grapheme is found in expanded graphite which is stripped.The asphalt of fume suppression which is based on expanded graphite was developed.By dynamic performance tests of asphalt mixture,the change rule of the fatigue property of the asphalt mixture of fume suppression was analyzed.It is confirmed the fatigue life of the asphalt mixture of fume suppression is already close to that of SBS modified asphalt and outclasses that of common asphalt mixture;The viscoelastic characteristics of the asphalt mixture of fume suppression was analyzed.It is confirmed theasphalt mixture of fume suppression has better high temperature stability;The change rules of dynamic modulus(phase angle)following change of temperatures and frequencies were revealed.It is confirmed the viscoelasticity of asphalt is influenced by expanded graphite in asphalt.The results show that the asphalt and asphalt mixture of fume suppression have better effect of fume suppression and road performance.
In order to suppress the release of asphalt fume under the high temperature,expanded graphite was mixed with road asphalt.The micro-testing were applied to confirm that the light component and Polycyclic Aromatic Hydrocarbons(PAHs)in the asphalt plug in the expanded graphite layer partly between plates under the high temperature and make nucleation crystallization growth or are adsorbed on expanded graphite surface.The bondage of the lattice and the Van der Waals force can effectively suppress the release of asphalt fume.Meanwhile,grapheme is found in expanded graphite which is stripped.The asphalt of fume suppression which is based on expanded graphite was developed.By dynamic performance tests of asphalt mixture,the change rule of the fatigue property of the asphalt mixture of fume suppression was analyzed.It is confirmed the fatigue life of the asphalt mixture of fume suppression is already close to that of SBS modified asphalt and outclasses that of common asphalt mixture;The viscoelastic characteristics of the asphalt mixture of fume suppression was analyzed.It is confirmed theasphalt mixture of fume suppression has better high temperature stability;The change rules of dynamic modulus(phase angle)following change of temperatures and frequencies were revealed.It is confirmed the viscoelasticity of asphalt is influenced by expanded graphite in asphalt.The results show that the asphalt and asphalt mixture of fume suppression have better effect of fume suppression and road performance.
引文
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[14]徐鸥明,韩森,段小琦.SBS改性沥青混合料疲劳极限拉应变研究[J].建筑材料学报,2010,13(2):193-197.XU Ou-ming,HAN Sen,DUAN Xiao-qi.Determination of Fatigue Ultimate Tension Strain of SBS Modified Asphalt Mixtures[J].Journal of Building Materials,2010,13(2):193-197.
[15]Pren 12697-25,Bituminous Mixtures-Test Methods for Hot Mix Asphalt-Part 25:Cyclic Compression Test[S].
[16]张裕卿,黄晓明.高温重载下沥青混合料变形特性三轴重复荷载蠕变试验研究[J].公路,2006(12):151-156.ZHANG Yu-qing,HUANG Xiao-ming.Triaxial Repeated Load Creep Tests and Research on Deformation Property of Asphalt Mixture at High Temperature and Heavy Load[J].Highway,2006(12):151-156.
[17]张久鹏,黄晓明,李辉.重复荷载作用下沥青混合料永久变形[J].东南大学学报:自然科学版,2008,38(3):511-515.ZHANG Jiu-peng,HUANG Xiao-ming,LI Hui.Permanent Deformation of Asphalt Mixture Under Repeated Load[J].Journal of Southeast University:Natural Science Edition,2008,38(3):511-515.
[18]PENG B,CAI C L,YIN G K,et al.Evaluation System for CO2Emission of Hot Asphalt Mixture[J].Journal of Traffic and Transportation Engineering:English Edition,2015,2(2):116-124.
[19]武金婷,叶奋.MLS66重载-高频加载下沥青路面应变行为分析[J].中国公路学报,2014,27(10):9-16,23.WU Jin-ting,YE Fen.Strain Behavior of Asphalt Pavement in Accelerated Pavement Testing with MLS66 Under Heavy-load and High-frequency[J].China Journal of Highway and Transport,2014,27(10):9-16,23.
[20]王朝辉,李彦伟,葛娟,等.Tourmaline改性沥青及其混合料热拌减排性能[J].中国公路学报,2014,27(11):17-24.WANG Chao-hui,LI Yan-wei,GE Juan,et al.Emission Reduction Effect of Tourmaline Modified Asphalt and Its Mixtures Under Condition of Hot-mix[J].China Journal of Highway and Transport,2014,27(11):17-24.
[21]AASHTO TP79-09,Determining the Dynamic Modulus and Flow Number for Mix Asphalt(HWA)Using the Asphalt Mixture Performance Tester(AMPT)[S].
[22]NCHRP.Simple Performance Tester for Superpave Mix Design[M].Kearneysville:Advanced Asphalt Technologies,2004.
[23]周志刚,傅搏峰.用粘弹性理论评价沥青混合料的高温稳定性[J].公路交通科技,2005,12(11):54-56.ZHOU Zhi-gang,FU Bo-feng.Applying the Theory of Viscoelasticity to Evaluate Thermal Stability of Asphalt Mixtures[J].Journal of Highway and Transportation Research and Development,2005,12(11):54-56.
[24]陈静云,孙依人,张岩,等.沥青混合料动态粘弹性行为分析的模拟方法[J].中国公路学报,2014,27(8):11-16.CHEN Jing-yun,SUN Yi-ren,ZHANG Yan,et al.Modeling Method for Analysis of Dynamic Viscoelastic Behavior of Asphalt Mixture[J].China Journal of Highway and Transport,2014,27(8):11-16.
[2]李新阳,黄刚,王俐栋.温拌沥青混合料技术综述.[J].石油沥青,2013,27(1):66-71.LI Xin-yang,HUANG Gang,WANG Li-dong.Review of Warm Mix Asphalt Technology[J].Petroleum Asphalt,2013,27(1):66-71.
[3]曹乃珍.膨胀石墨的微观结构及吸附性[D].北京:清华大学,1997.CAO Nai-zhen.The Micro-structure and Adsorption Performances of Expanded Graphite[D].Beijing:Tsinghua University,1997.
[4]刘小明.导电沥青混凝土的机敏特性研究[D].武汉:武汉理工大学,2007.LIU Xiao-ming.Research on Smart Characteristic of Conductive Asphalt Concrete[D].Wuhan:Wuhan University of Technology,2007.
[5]唐宁.导电沥青混凝土的导电特性与工程应用研究[D].武汉:武汉理工大学,2014.TANG Ning.Study on Conductive Characteristic and Application of Conductive Asphalt Concrete[D].Wuhan:Wuhan University of Technology,2014.
[6]刘小明,吴少鹏,李宁.石墨对沥青混合料的性能影响研究[J].武汉理工大学学报:交通科学与工程版,2010,34(3):545-549.LIU Xiao-ming,WU Shao-peng,LI Ning.Influence of Graphite on the Road Performance of Asphalt Concrete[J].Journal of Wuhan University of Technology:Transportation Science&Engineering,2010,34(3):545-549.
[7]吴少鹏,磨炼同,水中和,等.导电沥青混凝土的制备研究[J].武汉理工大学学报:交通科学与工程版,2002,26(5):567-570.WU Shao-peng,MO Lian-tong,SHUI Zhong-he,et al.Preparation of Electrically Conductive Asphalt[J].Journal of Wuhan University of Technology:Transportation Science&Engineering,2002,26(5):567-570.
[8]吴学伟.融雪除冰沥青路面设计方法[J].建材世界,2012,33(2):21-24.WU Xue-wei.Design Method of Asphalt Pavement for Snowmelt and Deicing[J].The World of Building Materials,2012,33(2):21-24.
[9]PARK S J,RODNEY S,RUOFF R S.Chemical Methods for the Production of Graphenes[J].Nature Nanotechnology,2009(4):217-224.
[10]惠昱晨,马晓燕,陈智群,等.季镀盐改性氧化石墨烯的制备及其性能研究[J].无机化学学报,2013,29(5):922-928.HUI Yu-chen,MA Xiao-Yan,CHEN Zhi-qun,et al.Preparation of Quaternary Ammonium Salt Modified Graphene Oxide and Its Properties[J].Chinese Journal of Inorganic Chemistry,2013,29(5):922-928.
[11]JTG F40—2004,公路沥青路面施工技术规范[S].JTG F40—2004,Technical Specifications for Construction of Highway Asphalt Pavements[S].
[12]JTG E20—2011,公路工程沥青及沥青混合料试验规程[S].JTG E20—2011,Standard Test Methods of Bitumen and Bituminous Mixtures for Highway Engineering[S].
[13]Pren 12697-24,Bituminous Mixtures-Test Methods for Hot Mix Asphalt-Part 24:Resistance to Fatigue[S].
[14]徐鸥明,韩森,段小琦.SBS改性沥青混合料疲劳极限拉应变研究[J].建筑材料学报,2010,13(2):193-197.XU Ou-ming,HAN Sen,DUAN Xiao-qi.Determination of Fatigue Ultimate Tension Strain of SBS Modified Asphalt Mixtures[J].Journal of Building Materials,2010,13(2):193-197.
[15]Pren 12697-25,Bituminous Mixtures-Test Methods for Hot Mix Asphalt-Part 25:Cyclic Compression Test[S].
[16]张裕卿,黄晓明.高温重载下沥青混合料变形特性三轴重复荷载蠕变试验研究[J].公路,2006(12):151-156.ZHANG Yu-qing,HUANG Xiao-ming.Triaxial Repeated Load Creep Tests and Research on Deformation Property of Asphalt Mixture at High Temperature and Heavy Load[J].Highway,2006(12):151-156.
[17]张久鹏,黄晓明,李辉.重复荷载作用下沥青混合料永久变形[J].东南大学学报:自然科学版,2008,38(3):511-515.ZHANG Jiu-peng,HUANG Xiao-ming,LI Hui.Permanent Deformation of Asphalt Mixture Under Repeated Load[J].Journal of Southeast University:Natural Science Edition,2008,38(3):511-515.
[18]PENG B,CAI C L,YIN G K,et al.Evaluation System for CO2Emission of Hot Asphalt Mixture[J].Journal of Traffic and Transportation Engineering:English Edition,2015,2(2):116-124.
[19]武金婷,叶奋.MLS66重载-高频加载下沥青路面应变行为分析[J].中国公路学报,2014,27(10):9-16,23.WU Jin-ting,YE Fen.Strain Behavior of Asphalt Pavement in Accelerated Pavement Testing with MLS66 Under Heavy-load and High-frequency[J].China Journal of Highway and Transport,2014,27(10):9-16,23.
[20]王朝辉,李彦伟,葛娟,等.Tourmaline改性沥青及其混合料热拌减排性能[J].中国公路学报,2014,27(11):17-24.WANG Chao-hui,LI Yan-wei,GE Juan,et al.Emission Reduction Effect of Tourmaline Modified Asphalt and Its Mixtures Under Condition of Hot-mix[J].China Journal of Highway and Transport,2014,27(11):17-24.
[21]AASHTO TP79-09,Determining the Dynamic Modulus and Flow Number for Mix Asphalt(HWA)Using the Asphalt Mixture Performance Tester(AMPT)[S].
[22]NCHRP.Simple Performance Tester for Superpave Mix Design[M].Kearneysville:Advanced Asphalt Technologies,2004.
[23]周志刚,傅搏峰.用粘弹性理论评价沥青混合料的高温稳定性[J].公路交通科技,2005,12(11):54-56.ZHOU Zhi-gang,FU Bo-feng.Applying the Theory of Viscoelasticity to Evaluate Thermal Stability of Asphalt Mixtures[J].Journal of Highway and Transportation Research and Development,2005,12(11):54-56.
[24]陈静云,孙依人,张岩,等.沥青混合料动态粘弹性行为分析的模拟方法[J].中国公路学报,2014,27(8):11-16.CHEN Jing-yun,SUN Yi-ren,ZHANG Yan,et al.Modeling Method for Analysis of Dynamic Viscoelastic Behavior of Asphalt Mixture[J].China Journal of Highway and Transport,2014,27(8):11-16.