为解决抗车辙级配设计问题,基于分形理论,通过理论分析及大量试验和计算,提出了一种骨架密实型抗车辙级配检验新方法.该方法应用分形理论,采用粗、细集料的粒径分布的分形维数、粗集料的分形空隙率、细集料在粗集料中的分形体积等指标,利用MATLAB自编程序对沥青针入度和粒径分形维数D进行双元曲线回归得到的沥青混合料动稳定度的经验公式进行级配检验,计算检验过程简单,解决了混合料级配设计的盲目性,是一种行之有效的方法.
To solve the anti-rutting gradation design problem, based on fractal theory and many experiments and calculations, a new resisting rutting gradation examination method is put forward. Based on empirical formulas of dynamic stability for asphalt mixture between asphalt penetration and gradation fractal dimension D, which is put forward, by means of binary variables curve regression through self-made MATLAB program, the method applies fractal theory to examining the aggregate gradation, by using the indices such as the fractal dimension of coarse and fine aggregate particle size distribution, the fractal void ratio of coarse aggregate, the fractal volume of fine aggregate in coarse aggregate, etc. The method solves the design blindness of mixture gradation effectively, with simple process of calculation and examination.
[1]李丽民, 何兆益, 冯浩雄, 等. 柔性基层沥青路面车辙性能的影响因素[J]. 材料科学与工程学报, 2017, 35(4): 575-581.
LI Limin, HE Zhaoyi, FENG Haoxiong, et al. Effect factors of rutting performance on the flexible base asphalt pavement[J]. Journal of Materials Science & Engineering, 2017, 35(4): 575-581.
[2]LI P L, DING Z, RAO W Y. Evaluation of deformation properties of asphalt mixture using aggregate slip test[J]. International Journal of Pavement Engineering, 2016, 17(6): 542-549.
[3]SIVASUBRAMANIAM S, HADDOCK J E. Validation of superpave mixture design and analysis procedures using the NACT test track [D]. Purdue University, 2015.
[4]MALLICK R B, BUCHANNAN S, BROWN E R, et al. An evaluation of superpave gyratory compaction of hot mix asphalt[R]. NCAT Report NO.98-5, 1998.
[5]VAVRIK W, PINE W, CARPENTER S. Aggregate blending for asphalt mix design: Bailey method[J]. Transportation Research Record Journal of the Transportation Research Board, 2002, 1789(1): 146-153.
[6]ABU EI, MATTYBEHIRY A E. Optimisation of hot mix asphalt performance based on aggregate selection[J]. International Journal of Pavement Engineering, 2016, 17(10): 924-940.
[7]LIRA B, JELAGIN D, BIRGISSON B. Gradation-based framework for asphalt mixture[J]. Materials & Structures, 2013, 46(8): 1401-1414.
[8]倪敏. 沥青混合料骨架密实结构评价指标及性能研究[D]. 西安: 长安大学, 2015.
NI Min. Study on evaluation index and performance of framework dense structure asphalt mixture[D]. Xi’an: Chang’an University, 2015.
[9]石立万, 王端宜. 基于数字图像处理的沥青混合料主骨架评价标准[J]. 中国公路学报, 2017, 30(5): 52-58.
SHI Liwan, WANG Duanyi. Evaluation indexes of asphalt mixture main skeleton based on digital image processing[J]. China Journal of Highway and Transport, 2017, 30(5): 52-58.
[10]张毅, 蒋应军, 杨秋侠. 沥青混合料矿料强嵌挤结构研究[J].西安建筑科技大学学报(自然科学版), 2013, 45(2): 185-191.
ZHANG Yi, JIANG Yingjun, YANG Qiuxia. Strong aggregate interlocking structure in asphalt mixture[J]. Journal of Xi’an University of Architecture & Technology (Natural Science Edition), 2013, 45(2): 185-191.
[11]牛冬瑜. 基于细观力学的沥青砂浆及骨架结构沥青混合料性能研究[D]. 西安: 长安大学, 2015.
NIU Dongyu. Study on performance of asphalt mortar and framework structured asphalt mixture based on meso-mechanics[D]. Xi’an: Chang’an University, 2015.
[12]宋卿卿. 基于分形理论的温拌沥青混合料技术性能指标的研究[D]. 乌鲁木齐: 新疆大学, 2014.
SONG Qingqing. Research on technical performance index of warm mix asphalt based on fractal theory[D]. Wulumuqi: Xinjiang University, 2014.
[13]武建民, 郑平安, 冀永安. 橡胶颗粒沥青混合料级配分形与动稳定度的关系[J]. 长安大学学报(自然科学版), 2015, 35(1): 8-13.
WU Jianmin, ZHENG Pinan, JI Yongan. Correlational analysis of graded fractal dimension of rubber particle asphalt mixture and its dynamic stability[J]. Journal of Chang’an University (Natural Science Edition), 2015, 35(1): 8-13.
[14]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. Study on design theory and method of asphalt mixture based on fractal theory[D]. Shanghai: Tongji University, 2008.
[15]ZOU Z, XU J, WU C. Evaluation of factors that affect rutting resistance of asphalt mixes by orthogonal experiment design[J]. International Journal of Pavement Research and Technology, 2017, 10(3): 282-288.
[16]朱洪洲. 柔性基层沥青路面疲劳性能及设计方法研究[D]. 南京: 东南大学, 2005.
ZHU Hongzhou. Study on fatigue performance and design method of flexible base asphalt[D]. Nanjing: Southeast University, 2005.
[17]谢晓刚. 沥青稳定碎石基层(ATB30)的性能分析与研究[D]. 长沙: 长沙理工大学, 2007.
XIE Xiaogang. The analysis and research on the performance of asphalt treated base (ATB30) mixture[D]. Changsha: Changsha University of Science & Technology, 2007.