以水性环氧树脂(WER)和丁苯(SBR)胶乳为乳化沥青改性剂,制备水性环氧-SBR乳化沥青(WESEA),采用蒸发残留物三大指标、旋转黏度、水煮法、湿轮磨耗试验、冻融循环试验、轮辙变形试验,探究水性环氧掺量对WESEA胶结料及其微表处混合料路用性能的影响。结果表明:WESEA胶结料高温性能、黏度与黏附性均随着水性环氧掺量增加而提升;当水性环氧掺量为10%时,WESEA微表处混合料1h湿轮磨耗值、6d湿轮磨耗值分别较SBR改性乳化沥青微表处混合料降低50.2%、44.0%,宽度变形率降低了41.8%;WESEA微表处混合料的耐磨性、抗水损能力以及抗车辙性能均优于SBR改性乳化沥青微表处混合料。
Waterborne epoxy-SBR emulsified asphalt (WESEA) was prepared by using waterborne epoxy resin (WER) and styrene butadiene rubber (SBR) latex as emulsified asphalt modifiers.Three indexes of evaporative residue,rotary viscosity,water boiling method,wet wheel wear test,freeze-thaw cycle test,and wheel rut deformation test were used to investigate the influence of waterborne epoxy content on the pavement performance of WESEA binder and its micro-surfacing mixture.The results indicated that the high-temperature properties,viscosity,and adhesion of WESEA binder increased with the increase of waterborne epoxy resin content.When the waterborne epoxy content was 10%,the 1h wet wheel wear value and 6d wet wheel wear value of WESEA micro-surfacing mixture were reduced by 50.2% and 44.0%,respectively,compared with SBR modified emulsified asphalt micro-surfacing mixture,and the width deformation rate was reduced by 41.8%.The wear resistance,water loss resistance,and rutting resistance of WESEA micro-surfacing mixture were superior to those of SBR modified emulsified asphalt micro-surfacing mixture.
[1] 季节,刘禄厚,索智,等.水性环氧树脂改性乳化沥青微表处性能[J].长安大学学报(自然科学版),2017,37(5):23-30.
[2] 常嵘,马融.某省公路沥青路面性能发展规律及养护方案[J].公路,2018,63(11):291-296.
[3] 陈忠达,张震,吴永军,等.水性环氧乳化沥青应用进展[J].筑路机械与施工机械化,2017,34(6):23-28.
[4] 郑木莲,范贤鹏,刘富强,等.复配型水性环氧乳化沥青微表处耐久性[J].长安大学学报(自然科学版),2020,40(1):68-76.
[5] Zhang Q,Xu Y,Wen Z.Influence of water-borne epoxy resin content on performance of waterborne epoxy resin compound SBR modified emulsified asphalt for tack coat[J].Construction and Building Materials,2017,153:774-782.
[6] 张庆,郝培文,白正宇.水性环氧树脂改性乳化沥青制备及其黏附性研究[J].公路交通科技,2015,32(9):9-14.
[7] Liu M,Han S,Wang Z,et al.Performance evaluation of new waterborne epoxy resin modified emulsified asphalt micro-surfacing[J].Construction and Building Materials,2019,214:93-100.
[8] 马朋涛,靳媛媛,邵广军.黏结层用环氧乳化沥青研发与性能研究[J].中外公路,2017,37(4):263-266.
[9] 李秀君,毕伟林,拾方治,等.水性环氧树脂对SBR乳化沥青的复合改性作用[J].重庆交通大学学报(自然科学版),2018,37(11):40-46.
[10] 谢群,王全磊,王火明,等.双组分环氧树脂抗滑薄层抗滑及力学性能研究[J].重庆交通大学学报(自然科学版),2020,39(12):74-79.
[11] 中华人民共和国交通运输部,公路沥青路面预防养护技术规范.JTG/T 5142-01—2021[S].北京:人民交通出版社,2021:33-35.
[12] 中华人民共和国交通运输部,公路工程沥青及沥青混合料试验规程.JTG E20—2011[S].北京:人民交通出版社,2011:21-35,158-161.
[13] 余定洋,何兆益,李兴富,等.水性环氧乳化沥青的制备及混合料路用性能研究[J].中外公路,2018,38(2):313-317.
基金资助
重庆市教委科学技术研究项目(KJZD-K202200701);贵州省公路局科技项目(2022QLK08)
PDF
