水性环氧树脂改性乳化沥青高温性能试验研究
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摘要
为了研究水性环氧树脂对乳化沥青高温性能的影响,制备了水性环氧树脂掺量分别为0%、5%、10%、15%的改性乳化沥青乳液;利用修正低温蒸发法将乳液在40℃条件下养生11d后裁剪成直径25mm、高1mm的圆柱形试件;基于动态剪切流变试验(DSR)、多应力蠕变恢复试验(MSCR),分别测定试件在58、64、70及76℃下保温30min后的车辙因子(G*/sinδ)、不可恢复蠕变柔量(Jnr)。研究表明:水性环氧树脂可提高乳化沥青的高温抗永久变形能力并降低乳化沥青蠕变过程中的黏性部分,减少累积变形;在评价水性环氧树脂改性乳化沥青的高温性能时,温度应选在58～64℃之间;为确保高温性能,水性环氧树脂的最佳掺量为10%。
In order to explore the effect of waterborne epoxy resin on the high-temperature performance of emulsified bitumen,the modified emulsified asphalt samples with 0%,5%,10% and 15% waterborne epoxy resin content were prepared,and the cylindrical specimens with diameter of 25 mm and height of 1 mm were cut by modified low temperature evaporation method after incubation at 40 ℃for 11 days.Based on the dynamic shear test(DSR)and the multiple stress creep recovery test(MSCR),the rutting factor(G*/sinδ)and the non-recoverable creep compliance(Jnr)of the specimens were measured after holding for 30 minutes at 58 ℃,64 ℃,70℃ and 76 ℃,respectively.The results show that waterborne epoxy resin can improve the permanent deformation resistance of emulsified asphalt at high temperature,reduce the viscous part of the emulsified asphalt during creep process,and reduce the cumulative deformation.When evaluating the high-temperature performance of waterborne epoxy resin modified emulsified asphalt,the temperature should be selected between 58 ℃ ～64 ℃.To ensure the hightemperature performance,the optimum content of waterborne epoxy resin is 10%.
In order to explore the effect of waterborne epoxy resin on the high-temperature performance of emulsified bitumen,the modified emulsified asphalt samples with 0%,5%,10% and 15% waterborne epoxy resin content were prepared,and the cylindrical specimens with diameter of 25 mm and height of 1 mm were cut by modified low temperature evaporation method after incubation at 40 ℃for 11 days.Based on the dynamic shear test(DSR)and the multiple stress creep recovery test(MSCR),the rutting factor(G*/sinδ)and the non-recoverable creep compliance(Jnr)of the specimens were measured after holding for 30 minutes at 58 ℃,64 ℃,70℃ and 76 ℃,respectively.The results show that waterborne epoxy resin can improve the permanent deformation resistance of emulsified asphalt at high temperature,reduce the viscous part of the emulsified asphalt during creep process,and reduce the cumulative deformation.When evaluating the high-temperature performance of waterborne epoxy resin modified emulsified asphalt,the temperature should be selected between 58 ℃ ～64 ℃.To ensure the hightemperature performance,the optimum content of waterborne epoxy resin is 10%.
引文
[1]张庆,郝培文,白正宇.水性环氧树脂改性乳化沥青性能表征及机理研究[J].公路工程,2016,41(2):109-112.ZHANG Qing,HAO Peiwen,BAI Zhengyu.Research on effect of waterborne epoxy resin on modified asphalt emulsion and its mechanism[J].Central South Highway Engineering,2016,41(2):109-112.
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[5]谷雨,何丽红,杨帆.水性环氧乳化沥青相容性研究综述[J].石油沥青,2018,32(1):1-9.GU Yu,HE Lihong,YANG Fan.Researchreview on the compatibility of waterborne epoxy emulsified asphalt[J].Petroleum Asphalt,2018,32(1):1-9.
[6]黄卫东,郑茂,唐乃膨,等.SBS改性沥青高温性能评价指标的比较[J].建筑材料学报,2017,20(1):139-144.HUANG Weidong,ZHENG Mao,TANG Naipeng,et al.Comparion of evaluation parameters for high temperature performance of SBS modified asphalt[J].Journal of Building Materials,2017,20(1):139-144.
[7]丁海波,徐大卫.多应力蠕变恢复试验的流变分析[J].公路交通科技,2014,31(12):20-24.DING Haibo,XU Dawei.Rheological analysis of multiple stress creep recovery test[J].Journal of Highway and Transportation Research and Development,2014,31(12):20-24.
[8]KANG Yang,SONG Mingyu,PU Liang,et al.Rheological behaviors of epoxy asphalt binder in comparison of base asphalt binder and SBSmodified asphalt binder[J].Construction&Building Materials,2015,76:343-350.
[9]牛晓伟,王永维,王文峰,等.乳化沥青残留物获取方法对比研究[J].现代交通技术,2016,13(3):1-4.NIU Xiaowei,WANG Yongwei,WANG Wenfeng,et al.Research on obtaining methods for asphalt emulsion residues[J].Modern Transportation Technology,2016,13(3):1-4.
[10]王佳炜.水性环氧-乳化沥青结构形成及性能影响因素研究[D].重庆:重庆交通大学,2015.WANG Jiawei.Influence Factors of Structure Formation and Properties of Waterborne Epoxy-Emulsified Asphalt[D].Chongqing:Chongqing Jiaotong University,2015.
[2]何远航,张荣辉.水性环氧树脂改性乳化沥青在公路养护中的应用[J].新型建筑材料,2007,34(5):37-40.HE Yuanhang,ZHANG Ronghui.Application of emulsified asphalt modified with water-epoxy resin to maintenance of highway[J].New Building Material,2007,34(5):37-40.
[3]常艳婷,陈忠达,牛小虎,等.水性环氧树脂改性乳化沥青黏层抗剪性能的检验[J].江苏大学学报(自然科学版),2017,38(2):224-229.CHANG Yanting,CHEN Zhongda,NIU Xiaohu,et al.Shear fatigue performance of epoxy emulsified asphalt tack coat[J].Journal of Jiangsu University(Natural Science Edition),2017,38(2):224-229.
[4]周启伟,徐光红,王庆珍,等.水性环氧乳化沥青性能及其微表处修复车辙效果评价[J].公路工程,2017,42(5):247-251.ZHOU Qiwei,XU Guanghong,WANG Qingzhen,et al.Research on the properties of waterborne epoxy emulsified asphalt and the repair rutting performance evaluation of microsurfacing with it[J].Central South Highway Engineering,2017,42(5):247-251.
[5]谷雨,何丽红,杨帆.水性环氧乳化沥青相容性研究综述[J].石油沥青,2018,32(1):1-9.GU Yu,HE Lihong,YANG Fan.Researchreview on the compatibility of waterborne epoxy emulsified asphalt[J].Petroleum Asphalt,2018,32(1):1-9.
[6]黄卫东,郑茂,唐乃膨,等.SBS改性沥青高温性能评价指标的比较[J].建筑材料学报,2017,20(1):139-144.HUANG Weidong,ZHENG Mao,TANG Naipeng,et al.Comparion of evaluation parameters for high temperature performance of SBS modified asphalt[J].Journal of Building Materials,2017,20(1):139-144.
[7]丁海波,徐大卫.多应力蠕变恢复试验的流变分析[J].公路交通科技,2014,31(12):20-24.DING Haibo,XU Dawei.Rheological analysis of multiple stress creep recovery test[J].Journal of Highway and Transportation Research and Development,2014,31(12):20-24.
[8]KANG Yang,SONG Mingyu,PU Liang,et al.Rheological behaviors of epoxy asphalt binder in comparison of base asphalt binder and SBSmodified asphalt binder[J].Construction&Building Materials,2015,76:343-350.
[9]牛晓伟,王永维,王文峰,等.乳化沥青残留物获取方法对比研究[J].现代交通技术,2016,13(3):1-4.NIU Xiaowei,WANG Yongwei,WANG Wenfeng,et al.Research on obtaining methods for asphalt emulsion residues[J].Modern Transportation Technology,2016,13(3):1-4.
[10]王佳炜.水性环氧-乳化沥青结构形成及性能影响因素研究[D].重庆:重庆交通大学,2015.WANG Jiawei.Influence Factors of Structure Formation and Properties of Waterborne Epoxy-Emulsified Asphalt[D].Chongqing:Chongqing Jiaotong University,2015.