橡胶沥青砂浆对混合料的动态模量影响
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摘要
为研究橡胶沥青砂浆对混合料的动态模量影响,采用旋转剪切压实试验,通过逐级填充粗集料测定骨架间隙率,分别取最小骨架间隙体积的0. 85、1. 00和1. 10倍,添加质量分数为30%的胶粉改性沥青砂浆,组成沥青混合料,通过旋转剪切压实试验制备动态模量试件,通过沥青混合料性能试验测定动态模量.研究表明,橡胶沥青砂浆对混合料的动态模量影响显著,在相同的试验温度和加载频率下,随着沥青砂浆的增加,动态模量呈增大趋势.西格摩德(Sigmoidal)数学模型能较好地拟合混合料的动态模量主曲线,粗集料、沥青砂浆和空隙的填充率拟合相关性分别为0. 998、0. 989和0. 985.
In order to study the influence of rubber asphalt mortar on the dynamic modulus of asphalt mixture,the rotating shear compaction test is used to determine the skeleton clearance rate by filling the coarse aggregates step by step. The 30% rubber powder modified asphalt mortar with 0. 85,1. 00 and 1. 10 times of the minimum skeleton clearance volume is assembled into three types of asphalt mixture. The dynamic modulus specimens are prepared by rotating shear compaction test,and the dynamic modulus is measured by asphalt mixture performance test( AMPT).The experimental results show that the rubber asphalt mortar has a significant influence on the dynamic modulus of the mixture. At the same test temperature and loading frequency,the dynamic modulus tends to increase with the increase of asphalt mortar. The Sigmoidal mathematical model is used to fit the dynamic modulus principal curve of the mixture. The fitting correlation coeficients of the three filling rates of coarse aggregate,asphalt mortar and void are 0. 998,0. 989 and 0. 985,respectively.
In order to study the influence of rubber asphalt mortar on the dynamic modulus of asphalt mixture,the rotating shear compaction test is used to determine the skeleton clearance rate by filling the coarse aggregates step by step. The 30% rubber powder modified asphalt mortar with 0. 85,1. 00 and 1. 10 times of the minimum skeleton clearance volume is assembled into three types of asphalt mixture. The dynamic modulus specimens are prepared by rotating shear compaction test,and the dynamic modulus is measured by asphalt mixture performance test( AMPT).The experimental results show that the rubber asphalt mortar has a significant influence on the dynamic modulus of the mixture. At the same test temperature and loading frequency,the dynamic modulus tends to increase with the increase of asphalt mortar. The Sigmoidal mathematical model is used to fit the dynamic modulus principal curve of the mixture. The fitting correlation coeficients of the three filling rates of coarse aggregate,asphalt mortar and void are 0. 998,0. 989 and 0. 985,respectively.
引文
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[16]HUANG Baoshan,SHU Xiang,LI Guoqiang,et al. Analytical modeling of three-layered HMA mixtures[J].International Journal of Geomechanics,2007,7(2),140-148.
[17]王国清.一种废旧橡胶粉改性沥青及其制备方法:中国,201410137564X[P]. 2014-04-08.WANG Guoqing. A modified asphalt with waste rubber powder and its preparation method:China,201410137564X[P]. 2014-04-08.(in Chinese)
[18]张倩,范哲哲,张尚龙,等.沥青混合料相位角预估模型[J].长安大学学报自然科学版,2018,38(2):19-25.ZHANG Qian,FAN Zhezhe,ZHANG Shanglong,et al.Prediction model of phase angle of asphalt mixture[J].Jorunal of Chang'an University Natural Science,2018,38(2):19-25.(in Chinese)
[19]NCHRP9—29 Simple performance tester for superpave mix design[S].
[2]孙祖望,陈舜明,张广春,等.橡胶沥青路面技术应用手册[M].北京:人民交通出版社,2014:4-5.SUN Zuwang,CHEN Shunming,ZHANG Guangchun,et al. Rubberized asphalt pavement technology usage handbook[M]. Beijing:China Communications Press,2014:4-5.(in Chinese)
[3] DING Xunhao, MA Tao, ZHANG Weiguang, et al.Experimental study of stable crumb rubber asphalt and asphalt mixture[J]. Construction and Building Materials,2017(157):975-981.
[4]王腾.复合型胶粉改性沥青胶浆及混合料性能研究[D].武汉:武汉理工大学,2014.WANG Teng. Research on performance of compound rubber modified asphalt mortar and mixture[D].Wuhan:Wuhan University of Technology,2014.(in Chinese)
[5] MAO Yu, LIU Yang, HAO Peiwen, et al. Road performance study on gap-graded and dense-graded of rubber powder particles modified asphalt mixture[J].Advanced Materials Research,2014(900):499-504.
[6]任瑞波,王立志,耿立涛.稳定性橡胶改性沥青混合料动态模量研究[J].山东建筑大学学报,2013,28(4):283-288.REN Ruibo,WANG Lizhi,GENG Litao. Dynamic modulus research of stabilized rubber modified asphalt mixtures[J]. Journal of Shandong Jianzhu University,2013,28(4):283-288.(in Chinese)
[7]耿立涛,杨新龙,任瑞波,等.稳定性橡胶改性沥青混合料动态模量预估[J].建筑材料学报,2013,16(4):720-724.GENG Litao, YANG Xinlong, REN Ruibo, et al.Dynamic modulus prediction of stabilized rubber modified asphalt mixture[J]. Journal of Building Materials,2013,16(4):720-724.(in Chinese)
[8]GUDMARSSON A,RYDEN N,BIRGISSON B. Application of resonant acoustic spectroscopy to asphalt concrete beams for determination of the dynamic modulus[J].Materials and Structures,2012,45(12):1903-1913.
[9]唐亨山.高掺量橡胶改性沥青混合料的动态模量研究[J].交通世界,2017,25(9):130-131.TANG Hengshan. Study on dynamic modulus of high content rubber modified asphalt mixture[J]. Transpo rtation World,2017,25(9):130-131.(in Chinese)
[10]于雷,郭朝阳,陈小兵,等.橡胶沥青混合料动态模量及其主曲线研究[J].中外公路,2015,35(2):203-206.YU Lei,GUO Chaoyang,CHEN Xiaobing,et al. Study on dynamic Modulus and its main curve of rubber asphalt mixture[J]. Journal of China&Foreign Highway,2015,35(2):203-206.(in Chinese)
[11]孙玉浩,王国清,王庆凯.胶粉掺量对胶改沥青及混合料性能影响研究[J].公路工程,2016,41(4):265-269SUN Yuhao,WANG Guoqing,WANG Qingkai. Effects of rubber powder modifier contents on asphatl and mitxure performance[J]. Highway Engineering,2016,41(4):265-269.(in Chinese)
[12]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].(in Chinese)
[13]王新强,王国清,王庆凯,等.高掺量胶粉改性沥青SRA-20混合料设计及性能研究[J].硅酸盐通报,2018,37(9):2985-2990.WANG Xinqiang,WANG Guoqing,WANG Qingkai,et al. High content rubber powder modified asphalt SRA-20mixture design and performance research[J]. Bulletin of the Chinese Ceramic Society, 2018, 37(9):2985-2990.(in Chinese)
[14]梁俊龙.沥青路面动态模量及裂缝扩展研究[D].西安:长安大学,2016.LIANG Junlong. Study on dynamic modulus and crack propagation of the asphalt pavement[D]. Xi'an:Chang'an University,2016.(in Chinese)
[15] MARYAM S,SAKHAEIFAR Y. New predictive models for dynamic modulus of hot mix asphalt[J]. Construction and Building Materials,2015(76):221-231.
[16]HUANG Baoshan,SHU Xiang,LI Guoqiang,et al. Analytical modeling of three-layered HMA mixtures[J].International Journal of Geomechanics,2007,7(2),140-148.
[17]王国清.一种废旧橡胶粉改性沥青及其制备方法:中国,201410137564X[P]. 2014-04-08.WANG Guoqing. A modified asphalt with waste rubber powder and its preparation method:China,201410137564X[P]. 2014-04-08.(in Chinese)
[18]张倩,范哲哲,张尚龙,等.沥青混合料相位角预估模型[J].长安大学学报自然科学版,2018,38(2):19-25.ZHANG Qian,FAN Zhezhe,ZHANG Shanglong,et al.Prediction model of phase angle of asphalt mixture[J].Jorunal of Chang'an University Natural Science,2018,38(2):19-25.(in Chinese)
[19]NCHRP9—29 Simple performance tester for superpave mix design[S].