沥青混合料级配分维特征与路用性能相关性研究
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摘要
通过对GAC-13C型沥青混合料级配分维特征进行分析,研究其与路用性能的相关性。剖析经分段回归和未经分段回归时分维数与级配的关系,对4.75 mm通过率与分维数的相关性进行了比较,并根据马歇尔试验参数、高温稳定性和抗滑性能试验相关结果,探讨改变4.75 mm筛孔通过率的级配分维特征与混合料路用性能之间的相关性。研究表明:4.75 mm的通过率与分段后的分维数相关性更好,随着级配4.75 mm筛孔通过率的降低,GAC-13C型沥青混合料分维值逐渐增大,级配变粗。同时,分维数和混合料马歇尔试验参数、高温稳定性和抗滑性能等均具有较好的相关性。
Through the analysis of the fractal dimension characteristics of gradation of GAC-13 C asphalt mixture,the correlation between pavement fractal dimension and road performance was studied. The relationship between fractal dimension and gradation with and without segmented regression was analyzed. The correlation between the pass rate of 4.75 mm and the fractal dimension was compared. According to the related results of Marshall test parameters,high temperature stability and skid resistance test,the correlation between the gradation fractal dimension characteristics of changing the pass rate of 4.75 mm sieve hole and the road performance of the mixtures was discussed. The results show that: the correlation between the pass rate of 4.75 mm and the segmented fractal dimension is better; with the decrease of pass rate of 4.75 mm,the fractal dimension of GAC-13 C type asphalt mixture gradually increases and the gradation becomes coarser. At the same time,the fractal dimension and Marshall test parameters,high temperature stability as well as skid resistance of mixtures have good correlation.
Through the analysis of the fractal dimension characteristics of gradation of GAC-13 C asphalt mixture,the correlation between pavement fractal dimension and road performance was studied. The relationship between fractal dimension and gradation with and without segmented regression was analyzed. The correlation between the pass rate of 4.75 mm and the fractal dimension was compared. According to the related results of Marshall test parameters,high temperature stability and skid resistance test,the correlation between the gradation fractal dimension characteristics of changing the pass rate of 4.75 mm sieve hole and the road performance of the mixtures was discussed. The results show that: the correlation between the pass rate of 4.75 mm and the segmented fractal dimension is better; with the decrease of pass rate of 4.75 mm,the fractal dimension of GAC-13 C type asphalt mixture gradually increases and the gradation becomes coarser. At the same time,the fractal dimension and Marshall test parameters,high temperature stability as well as skid resistance of mixtures have good correlation.
引文
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[2]杨瑞华,许志鸿,张超,等.沥青混合料分形级配理论[J].同济大学学报(自然科学版),2008,36(12):1642-1646.YANG Ruihua,XU Zhihong,ZHAO Chao,et al.Fractal gradation theory of asphalt mixture[J].Journal of Tongji University(Natural Science),2008,36(12):1642-1646.
[3]李虎,陈永云,张诚.基于级配分形理论的AC-13型混合料路用性能研究[J].公路工程,2013,38(1):124-128.LI Hu,CHEN Yongyun,ZHANG Cheng.Study on road performance of AC-13 mixture based on gradation fractal theory[J].Road Engineering,2013,38(1):124-128.
[4]杨彦昌.分形理论在沥青混合料中的应用研究[D].长沙:长沙理工大学,2009.YANG Yanchang.The Application of Fractal Theory in Asphalt Mixture[D].Changsha:Changsha University of Science and Technology,2009.
[5]黄继成,黄彭.沥青混合料集料分形和性状相关性研究[J].同济大学学报(自然科学版),2006,34(12):1632-1637.HUANG Jicheng,HUANG Peng.Asphalt mixture aggregate fractal and traits association study[J].Journal of Tongji University(Natural Science Edition),2006,34(12):1632-1637.
[6]赵战利.基于分形方法的沥青路面抗滑技术研究[D].西安:长安大学,2005.ZHAO Zhanli.Skid Resistance of Asphalt Pavement Technology Based on Fractal Method Research[D].Xi'an:Chang'an University,2005.
[7]MANDELBORT B B.The Fractal Ceometry of Nature[M].San Francisco:W.H.Freeman and Company,1982.
[8]杨威,程波.分形理论在沥青混合料级配设计中的应用[J].石油沥青,2009,23(5):26-29.YANG Wei,CHENG Bo.Fractal theory in the application of asphalt mixture gradation design[J].Journal of Petroleum Pitch,2009,23(5):26-29.
[9]张金辉,于江,李林萍,等.分形级配理论在连续级配设计中的应用[J].中外公路,2013,33(6):243-247.ZHANG Jinhui,YU Jiang,LI Linping,et al.Grading fractal theory in the application of continuous gradation design[J].Highway,2013,33(6):243-247.
[10]李林萍,艾贤臣,于江,等.沥青混合料矿料级配分形特性研究[J].中外公路,2016(2):257-261.LI Linping,AI Xianchen,YU Jiang,et al.Study on fractal characteristics of aggregate gradation of asphalt mixture[J].Journal of China&Foreign Highway,2016(2):257-261.
[11]杨瑞华.基于分形理论的沥青混合料设计理论与方法研究[D].上海:同济大学,2008.YANG Ruihua.Asphalt Mixture Design Based on the Theory of the Fractal Theory and Method Research[D].Shanghai:Tongji University,2008.
[12]刘涛,李智,孙杨勇,等.沥青路面粗集料微观纹理评价方法研究[J].重庆交通大学学报(自然科学版),2012,31(3):394-397.LIU Tao,LI Zhi,SUN Yangyong,et al.Study on microtexture structure of asphalt pavement coarse aggregate[J].Journal of Chongqing Jiaotong University(Natural Science),2012,31(3):394-397.