Research on Performance of WER-SBR Composite Modified Active Emulsified Asphalt

Abstract

Abstract: Styrene butadiene rubber (SBR) active emulsified asphalt can activate aged asphalt of old pavement. However, the engineering application is limited due to its poor high-temperature stability and insufficient adhesion. To solve the performance shortcomings of SBR active emulsified asphalt performance, waterborne epoxy resin (WER) was used for composite modification. The evaporation residue was obtained by the modified low-temperature evaporation method. The effects of WER dosage on the basic physical properties, adhesion, dynamic rheological properties, low-temperature creep properties and reducibility of SBR active emulsified asphalt were analyzed. The results show that with incorporation of WER, the penetration of SBR active emulsified asphalt decreases significantly, the softening point increases significantly, but the ductility decreases. WER can significantly improve the high-temperature stability of SBR active emulsified asphalt, but has an adverse impact on its low-temperature ductility properties. In addition, WER significantly enhances the adhesion of SBR active emulsified asphalt. The complex shear modulus (G^*) and rutting factor (G^*/sin δ) increase, while phase angle (δ) decreases with the increase of WER dosage, implying that the high-temperature rutting resistance of SBR active emulsified asphalt is improved. Furthermore, with the increase of WER dosage, the stiffness modulus (S) and the creep rate (M) of SBR active emulsified asphalt show an increasing and decreasing trend, respectively. The incorporation of WER has little effect on the reducibility of SBR active emulsified asphalt. Based on the experimental results, the dosage of WER should be controlled in 10%~15% (mass fraction).

Key words: modified emulsified asphalt, waterborne epoxy resin, rheological property, creep property, reducibility, adhesivity

CLC Number:

U414

ZHENG Mulian, MA Sai, WANG Ke, LIU Xia, DING Xiaoyan. Research on Performance of WER-SBR Composite Modified Active Emulsified Asphalt[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(3): 1085-1093.

References

[1] 徐鹏,祝轩,姚丁,等.沥青路面养护智能检测与决策综述[J].中南大学学报(自然科学版),2021,52(7):2099-2117.
XU P, ZHU X, YAO D, et al. Review on intelligent detection and decision-making of asphalt pavement maintenance[J]. Journal of Central South University (Science and Technology), 2021, 52(7): 2099-2117 (in Chinese).
[2] 李宁.路面典型预养护措施的研究与应用概况综述[J].公路,2021,66(6):367-370.
LI N. Summary of research and application of typical pavement pre-maintenance measures [J]. Highway, 2021, 66(6): 367-370 (in Chinese).
[3] 窦维禹,赵福利.改性乳化沥青高温性能研究[J].武汉理工大学学报(交通科学与工程版),2021,45(1):191-194.
DOU W Y, ZHAO F L. Study on high temperature properties of modified emulsified asphalt[J]. Journal of Wuhan University of Technology (Transportation Science & Engineering), 2021, 45(1): 191-194 (in Chinese).
[4] 吴淑娟.活性复合封层材料开发与性能评价研究[D].西安:长安大学,2019.
WU S J. Research on development and performance evaluation of active composite sealing materials[D]. Xi'an: Chang'an University, 2019 (in Chinese).
[5] U.S. Federal Highway Administration. Insights into pavement preservation[R]. Washington: U.S. Department of Transportion, 2000: 5-13.
[6] BROWNRIDGE J. The role of an asphalt rejuvenator in pavement preservation: use and need for asphalt rejuvenation[C]//Compendium of papers from the first international conference on pavement preservation. California: National Academies Press, 2010: 351-365.
[7] JAEJUN L, JUSANG L, SHUO L, et al. Effectiveness of asphalt rejuvenator[J]. Journal of Testing and Evaluation, 2013, 41(3): 433-440.
[8] PRAPAITRAKUL N, FREEMAN T, GLOVER C. Analyze existing fog seal asphalts and additives: literature review[R]. Texas: U.S. Federal Highway Administration, 2005: 3-10.
[9] XU J R, JAMIESON A M, QUTUBUDDIN S, et al. Catastrophic emulsification of epoxy resin using pluronic block copolymers: preinversion behavior[J]. Langmuir, 2001, 17(4): 1310-1313.
[10] FANG X L, CHEN Z M, JIAO Z, et al. Study on microstructure, rheology and thermal stability of cement epoxy asphalt mortar multiphase materials[J]. Magazine of Concrete Research, 2013, 65(8): 475-485.
[11] 梁建,许辉,郭寒,等.水性环氧树脂改性剂对乳化沥青性能及结构的影响研究[J].硅酸盐通报,2020,39(6):1998-2004.
LIANG J, XU H, GUO H, et al. Research on influence of water-based epoxy resin modifier on performance and structure of emulsified asphalt[J]. Bulletin of the Chinese Ceramic Society, 2020, 39(6): 1998-2004 (in Chinese).
[12] 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.
JI J, LIU L H, SUO Z, et al. Performances of micro-surfacing with waterborne epoxy resin modified emulsified asphalt[J]. Journal of Chang'an University (Natural Science Edition), 2017, 37(5): 23-30 (in Chinese).
[13] 周卫峰,董利伟,宋晓燕,等.水性环氧树脂改性乳化沥青高温性能试验研究[J].重庆交通大学学报(自然科学版),2019,38(4):55-59.
ZHOU W F, DONG L W, SONG X Y, et al. Experimental study on high-temperature performance of waterborne epoxy resin modified emulsified asphalt[J]. Journal of Chongqing Jiaotong University (Natural Science), 2019, 38(4): 55-59 (in Chinese).
[14] 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.
LI X J, BI W L, SHI F Z, et al. Research on the compound modification effect of waterborne epoxy resin on SBR emulsified asphalt[J]. Journal of Chongqing Jiaotong University (Natural Science), 2018, 37(11): 40-46 (in Chinese).
[15] 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.
ZHENG M L, FAN X P, LIU F Q, et al. Durability of compound waterborne epoxy emulsified asphalt microsurfacing[J]. Journal of Chang'an University (Natural Science Edition), 2020, 40(1): 68-76 (in Chinese).
[16] 中华人民共和国国家标准.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.
National Standard of the People's Republic of China. Highway engineering asphalt and asphalt mixture test regulations: JTG E20—2011[S]. Beijing: People's Communications Press, 2011 (in Chinese).