Evaluation of Road Performance of Activated Rubber Powder Composite Modified Asphalt Mixture

被引：0
|
作者：
Wang Y. [1 ,2 ]
Li X. [2 ]
Yang T. [3 ]
Wei D. [2 ]
Li B. [1 ]
机构：
[1] School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou
[2] Center for High‑Performance Materials Research and Development, Gansu Province Transportation Planning, Survey & Design Institute Co.，Ltd., Lanzhou
[3] Gansu Province Transportation Construction Group Co.，Ltd., Lanzhou
来源：
Jianzhu Cailiao Xuebao/Journal of Building Materials | 2024年 / 27卷 / 02期
关键词：
mechanical property; overlay test; road engineering; twin‑screw activated rubber powder composite SBS modified asphalt;
D O I：
10.3969/j.issn.1007-9629.2024.02.003
中图分类号：
学科分类号：
摘要：
To evaluate the low‑temperature performance of double screw activated rubber powder composite SBS modified asphalt and its mixture，the low‑temperature performance indicators of SBS modified asphalt，non‑activated rubber powder composite SBS modified asphalt，and twin‑screw activated rubber powder composite SBS modified asphalt were tested by force ductility，semi‑circular bending，and overlay test. The entropy weight method was used to optimize the force ductility indicators. The mechanism of performance changes of the three types of asphalt was analyzed through fluorescence microscopy and four component testing. The results indicate that the maximum yield point of the force ductility index can effectively characterizes the low‑temperature performance of twin‑screw activated rubber powder composite SBS modified asphalt. During the twin‑screw activation process，crosslinks are opened and a stable crosslink network structure is formed with SBS，significantly enhancing the high‑temperature performance and resistance to water damage of the modified asphalt mixtures. © 2024 Tongji University. All rights reserved.
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页码：114 / 120
页数：6
相关论文
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