基于DMA方法的沥青类材料相态转变温度研究
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摘要
为了研究沥青类材料(包括沥青、沥青胶浆及沥青混合料等)的相态转变温度T_p的特性及其内在关系,选择2种不同特性的沥青并制备了其各自对应的不同粉胶比的沥青胶浆及不同级配的沥青混合料,采用动态力学分析(DMA)方法在相同的试件尺寸及相似的温度扫描模式下测试了每一类材料的T_p;进而对27种不同沥青、不同级配及不同油石比的AC5型沥青混合料的T_p采用标准方法进行了测试比较。结果表明:选择损耗模量峰值点对应的温度作为T_p可以有效地将3种沥青材料进行对比,沥青及沥青胶浆的T_p为负值,而沥青混合料的T_p变为正值;沥青性质是影响沥青类材料T_p的主要因素,相同沥青的3种沥青类材料具有很好的相关性;粉胶比对于沥青胶浆以及级配对于沥青混合料同样产生影响,随着粉胶比的增加,沥青胶浆的T_p逐渐增加,随着细集料的增加,沥青混合料的T_p逐渐降低;AC5型沥青混合料中,油石比及级配同样对T_p产生不同影响,橡胶沥青混合料AR的T_p更低,说明其具有更好的低温性能。采用DMA方法测试T_p可以为评价沥青类材料的低温特性提供一定的参考。
To study the properties of phase transition temperature T_p of asphalt materials(including asphalt, asphalt mastic and asphalt mixture, etc.) and their correlations, selecting 2 kinds of asphalt with different properties, their mastics corresponding to different filler-asphalt ratios and their asphalt mixtures with different gradations are prepared. The T_ps of different materials with same sample size are measured by using dynamic mechanical analysis(DMA) method and similar temperature scanning modes. Then, The T_ps of 27 kinds of AC5 type asphalt mixture with different asphalts, gradations, and asphalt-aggregate ratios are measured and compared by standard method. The result indicates that(1) The temperature at peak of loss modulus can be used as T_p and it can better make a comparison of all the 3 asphalt materials. The T_ps of asphalt and asphalt mastic are negative, while that of mixture turns positive.(2) Asphalt property plays the key role in the T_p of asphalt material, and there are good correlations between 3 types of asphalt material and the same asphalt.(3) Filler-asphalt ratio and gradation type also affect the mastic and the mixture respectively. T_p of mastic increases with the growing of filler-asphalt ratio, while T_p of mixture has a downward trend with more fine aggregates.(4) As for AC5 type mixtures, asphalt-aggregate ratio and gradation also have different impacts on T_p. The asphalt rubber mixture AR owns a lower T_p, which indicates it has a better low-temperature performance. The T_p measured by DMA method can be used to provide a reference in evaluating the low-temperature characteristics of asphalt materials.
To study the properties of phase transition temperature T_p of asphalt materials(including asphalt, asphalt mastic and asphalt mixture, etc.) and their correlations, selecting 2 kinds of asphalt with different properties, their mastics corresponding to different filler-asphalt ratios and their asphalt mixtures with different gradations are prepared. The T_ps of different materials with same sample size are measured by using dynamic mechanical analysis(DMA) method and similar temperature scanning modes. Then, The T_ps of 27 kinds of AC5 type asphalt mixture with different asphalts, gradations, and asphalt-aggregate ratios are measured and compared by standard method. The result indicates that(1) The temperature at peak of loss modulus can be used as T_p and it can better make a comparison of all the 3 asphalt materials. The T_ps of asphalt and asphalt mastic are negative, while that of mixture turns positive.(2) Asphalt property plays the key role in the T_p of asphalt material, and there are good correlations between 3 types of asphalt material and the same asphalt.(3) Filler-asphalt ratio and gradation type also affect the mastic and the mixture respectively. T_p of mastic increases with the growing of filler-asphalt ratio, while T_p of mixture has a downward trend with more fine aggregates.(4) As for AC5 type mixtures, asphalt-aggregate ratio and gradation also have different impacts on T_p. The asphalt rubber mixture AR owns a lower T_p, which indicates it has a better low-temperature performance. The T_p measured by DMA method can be used to provide a reference in evaluating the low-temperature characteristics of asphalt materials.
引文
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[13]邹桂莲.基于DMA方法的岩沥青流变特性研究[J].公路与汽运,2011(3):91-94.ZOU Gui-lian.Research on Rheology Property of Rock Asphalt Based on DMA Method[J].Highways&Automotive Applications,2011(3):91-94.
[14]詹小丽,张肖宁,王端宜,等.基于DMA方法的沥青胶浆微观结构[J].吉林大学学报:工学版,2009,39(4):916-920.ZHAN Xiao-li,ZHANG Xiao-ning,WANG Duan-yi,et al.Microstructure of Asphalt Mastic Using Dynamic Mechanical Analysis[J].Journal of Jilin University:Engineering and Technology Edition,2009,39(4):916-920.
[15]陈惊宇.基于DMA方法的沥青胶浆老化性能及其对铣刨系统的影响研究[D].西安:长安大学,2016.CHEN Jing-yu.Research on Aging Property of Asphalt Mortar and Its Impact on Road Milling System Using DMA[D].Xi'an:Chang'an University,2016.
[16]LIU Jia-yin,SUN Yi-ren,WANG Wei-ying,et al.Using the Viscoelastic Parameters to Estimate the Glass Transition Temperature of Asphalt Binders[J].Construction and Building Materials,2017,153:908-917.
[17]FANG L,YUAN Q,DENG D H,et al.Effect of Mix Parameters on the Dynamic Mechanical Properties of Cement Asphalt Mortar[J].Journal of Materials in Civil Engineering,2017,29(8):04017080.
[18]SOLIMAN H,SHALABY A.Characterizing the Lowtemperature Performance of Hot-pour Bituminous Sealants Using Glass Transition Temperature and Dynamic Stiffness Modulus[J].Journal of Materials in Civil Engineering,2009,21(11):688-693.
[2]张肖宁.沥青与沥青混合料的粘弹力学原理及应用[M].北京:人民交通出版社,2006.ZHANG Xiao-ning.Viscoelastic Principle and Application of Asphalt and Asphalt Mixture[M].Beijing:China Communications Press,2006.
[3]AASHTO.Specification for Performance-graded Asphalt Binder[S].Washington,D.C.:AASHTO,1998:10-89.
[4]何立平.基于DMA方法的橡胶沥青粘弹特性和高温性能研究[D].西安:长安大学,2014.HE Li-ping.Research on Viscoelastic Characteristic and High Temperature Property of Rubber Asphalt Based DMAMethod[D].Xi'an:Chang'an University,2014.
[5]詹小丽.基于DMA方法对沥青粘弹性的研究[D].哈尔滨:哈尔滨工业大学,2007.ZHAN Xiao-li.Research on Viscoelastic Propertt of Asphalt Using DMA Method[D].Harbin:Harbin Institute of Technology,2007.
[6]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.
[7]ZHANG L,TAN Y Q,BAHIA H.Relationship between Glass Transition Temperature and Low Temperature Properties of Oil Modified Binders[J].Construction and Building Materials,2016,104:92-98.
[8]曹丽萍,谭忆秋,董泽蛟,等.应用玻璃化转变温度评价SBS改性沥青低温性能[J].中国公路学报,2006,19(2):1-6.CAO Li-ping,TAN Yi-qiu,DONG Ze-jiao,et al.Evaluation for Low Temperature Performance of SBSModified Asphalt Using Glass Transition Temperature[J].China Journal of Highway and Transport,2006,19(2):1-6.
[9]尹应梅.基于DMA法的沥青混合料动态粘弹特性及剪切模量预估方法研究[D].广州:华南理工大学,2010.YIN Ying-mei.Research on Dynamic Viscoelastic Characteristics and Shear Modulus Predicting Methods for Asphalt Mixture Based DMA Method[D].Guangzhou:South China University of Technology,2010.
[10]GUO M,TAN Y Q,ZHANG L.Effect of Filler on Glass Transition of Asphalt Mastics[J].Advanced Engineering Forum,2012,5:376-381.
[11]金磊,钱振东,郑彧.基于DMA方法的浇注式沥青胶浆高温性能及评价指标[J].东南大学学报:自然科学版,2014,44(5):1062-1067.JIN Lei,QIAN Zhen-dong,ZHENG Yu.High Temperature Performance and Evaluation Index of Gussasphalt Mortar Based on DMA Method[J].Journal of Southeast University:Natural Science Edition,2014,44(5):1062-1067.
[12]梁明,辛雪,范维玉,等.DMA法研究不同粒径胶粉改性沥青黏弹性能[J].石油学报:石油加工,2015,31(5):1187-1192.LIANG Ming,XIN Xue,FAN Wei-yu,et al.Study on Viscoelastic Behavior of Crumb Tire Rubber Modified Asphalt with Different Particle Sizes Based on Dynamic Mechanical Analysis[J].Acta Petrolei Sinica:Petroleum Processing Section,2015,31(5):1187-1192.
[13]邹桂莲.基于DMA方法的岩沥青流变特性研究[J].公路与汽运,2011(3):91-94.ZOU Gui-lian.Research on Rheology Property of Rock Asphalt Based on DMA Method[J].Highways&Automotive Applications,2011(3):91-94.
[14]詹小丽,张肖宁,王端宜,等.基于DMA方法的沥青胶浆微观结构[J].吉林大学学报:工学版,2009,39(4):916-920.ZHAN Xiao-li,ZHANG Xiao-ning,WANG Duan-yi,et al.Microstructure of Asphalt Mastic Using Dynamic Mechanical Analysis[J].Journal of Jilin University:Engineering and Technology Edition,2009,39(4):916-920.
[15]陈惊宇.基于DMA方法的沥青胶浆老化性能及其对铣刨系统的影响研究[D].西安:长安大学,2016.CHEN Jing-yu.Research on Aging Property of Asphalt Mortar and Its Impact on Road Milling System Using DMA[D].Xi'an:Chang'an University,2016.
[16]LIU Jia-yin,SUN Yi-ren,WANG Wei-ying,et al.Using the Viscoelastic Parameters to Estimate the Glass Transition Temperature of Asphalt Binders[J].Construction and Building Materials,2017,153:908-917.
[17]FANG L,YUAN Q,DENG D H,et al.Effect of Mix Parameters on the Dynamic Mechanical Properties of Cement Asphalt Mortar[J].Journal of Materials in Civil Engineering,2017,29(8):04017080.
[18]SOLIMAN H,SHALABY A.Characterizing the Lowtemperature Performance of Hot-pour Bituminous Sealants Using Glass Transition Temperature and Dynamic Stiffness Modulus[J].Journal of Materials in Civil Engineering,2009,21(11):688-693.