Materials Reports 2021, Vol. 35 Issue (Z1): 264-268 |
INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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Damage Characteristics of Foamed Asphalt Mixture Modified by Silane Coupling Agent Under Freeze-thaw Cycles |
DAI Wenting1, LIU Dandan2, GUO Wei2, LI Yingsong3, AN Yin2
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1 College of Construction Engineering, Jilin University, Changchun 130026, China 2 College of Transportation, Jilin University, Changchun 130022, China 3 College of Transportation, Southeast University, Nanjing 211102, China |
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Abstract In this paper, the design optimization of foam asphalt and the road performance of foam asphalt mixture after freeze-thaw cycles were studied. Using the self-designed asphalt foaming machine, combined with the optimal foaming conditions,the foaming temperature was 159 ℃ and the stirring rate was 1 156 r/ min, of 70# base asphalt, the influence of foaming water consumption on foaming effect was studied, and four kinds of asphalt mixtures were prepared by modifying asphalt with silane coupling agent. The results showed that the penetration degree of foam asphalt increased with the increase of foaming water consumption, and the softening point, ductility and viscosity decreased with the increase of water consumption. When the freeze-thaw cycle is 30 times, compared with the none modified mixture, the high-temperature stability, low-temperature crack resistance and water stability of the foam asphalt modified by silane coupling agent increased by 20.63%, 28.51% and 20.14%. The modified asphalt foam had high temperature performance, low temperature crack resistance and the water stability is relatively stable. The adhesion strength of modified asphalt foams with silane coupling agent has been enhanced, and the problem of the decrease of cohesive force caused by water inside the foamed asphalt has been improved.
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Published: 16 July 2021
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Fund:Natural Science Foundation of China (51178204) and the Science and Technology Development Plan Project of Jilin Province (20190303033SF) . |
About author:: Wenting Dai, a professor and graduate tutor of Jilin University, won the second prize of the 2017 Jilin Science and Technology Progress Award as the person in charge in the past five years. Published more than 50 academic papers, of which more than 20 were indexed by SCI /EI. At present, he is the project evaluation expert of National Natural Science Foundation of China, Science and Technology Department of Jilin Province, Science and Technology Department of Zhejiang Province, etc. In recent years, he has presided over more than ten scientific research projects including the National Natural Science Foundation General Project, the Ministry of Education Study Abroad Fund, and Jilin Provincial Science and Technology Research Project, and participated in more than 20 scientific research projects as main participants. |
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1 Si W, Ma B, Li N, et al. Construction and Building Materials, 2014, 68, 572. 2 Attia M, Abdelrahman M. Journal of Materials in Civil Engineering, 2010, 22(12), 1260. 3 You L G, You Z P, Dai Q L, et al. American Society of Civil Engineers, 2018, 30(11), 1. 4 Bazmara B, Tahersima M, Behravan A. Construction and Building Materials, 2018, 166, 1. 5 Li Z G, Hao P W, Liu H Y, et al. Construction and Building Materials, 2016, 127, 410. 6 张智.公路工程, 2016, 41(6), 150. 7 刘广生, 周煜华, 杨静, 等.江西化工, 2019(6), 75. 8 Kamati S R, Oldham D, Fin E H. et al.Construction and Building Mate-rials, 2020, 244, 1. 9 王雅珍, 张雪泽, 狄语韬.化工新型材料, 2018, 46(11),5. 10 Guo W, Guo X D, Li Y S. Coatings, 2020, 10(3), 239. |
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