Improving anti-aging performance of terminal blend rubberized bitumen by using graft activated crumb rubber
Author:
Xie Juan12, Zhao Xucheng1, He Wen1, Zhang Yongning3, Xin Yabing4
Affiliation:
1. School of Traffic and Transportation Engineering , Changsha University of Science and Technology , Changsha 410114 , China 2. National Engineering Research Center of Highway Maintenance Technology, Changsha University of Science and Technology , Changsha 410114 , China 3. Shanghai Municipal Engineering Design Institute (Group) Co., Ltd. , Shanghai 200082 , China 4. HNCEG Communications Construction Co., Ltd. , Changsha 410004 , China
Abstract
Abstract
The appearance of terminal blend rubberized bitumen (TB) has improved a series of defects of traditional rubber bitumen, such as high viscosity, poor storage stability. Therefore, its wide application prospect is self-evident. However, different degrees of thermal-oxidative aging problem still exist in the process from production to use of TB, which seriously affects the service life of pavement. To improve the anti-aging performance of TB, grafting activated crumb rubber (GACR) was obtained by using acrylamide, and then compounded with TB. Firstly, TB was prepared in the self-developed nitrogen protection device. Secondly, GACR modified bitumen (GACR-MB), TB/CR composite modified bitumen (TB/CR) and TB/GACR composite modified bitumen (TB/GACR) were developed in the atmospheric environment. Finally, the performance of four kinds of crumb rubber modified bitumens before and after aging was compared and analyzed by testing high and low temperature rheological properties. The results show that GACR slowed down the formation rate and aggregation degree of asphaltenes and other macromolecular substances, and TB/GACR showed excellent aging resistance.
Funder
Education Department of Hunan Province National Natural Science Foundation of China Changsha University of Science and Technology Hunan Provincial Natural Science Foundation of China Science and Technology Bureau, Changsha
Publisher
Walter de Gruyter GmbH
Subject
Materials Chemistry,Polymers and Plastics,General Chemical Engineering
Reference35 articles.
1. Polacco, G., Filippi, S., Merusi, F., Stastna, G. A review of the fundamentals of polymer-modified asphalts: asphalt/polymer interactions and principles of compatibility. Adv. Colloid Interface Sci. 2015, 224, 72–112; https://doi.org/10.1016/j.cis.2015.07.010. 2. Milad, A., Ahmeda, A. G. F., Taib, A. M., Rahmad, S., Solla, M., Yusoff, N. I. M. A review of the feasibility of using crumb rubber derived from end-of-life tire as asphalt binder modifier. J. Rubber Res. 2020, 23, 203–216; https://doi.org/10.1007/s42464-020-00050-y. 3. Picado-Santos, L. G., Capitão, S. D., Neves, J. M. C. Crumb rubber asphalt mixtures: A literature review. Constr. Build. Mater. 2020, 247, 118577; https://doi.org/10.1016/j.conbuildmat.2020.118577. 4. Zhu, Y., Xu, G., Ma, T., Fan, J., Li, S. Performances of rubber asphalt with middle/high content of waste tire crumb rubber. Constr. Build. Mater. 2022, 335, 127488; https://doi.org/10.1016/j.conbuildmat.2022.127488. 5. Haihui, D., Chongzheng, Z., Henglong, Z., Shuai, Z., Feipeng, X., Serji, A. Investigation on rheological characteristics of low-emissions crumb rubber modified asphalt. Int. J. Pavement Eng. 2023, 24, 2164891; https://doi.org/10.1080/10298436.2023.2164891.
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