油对提高SBSMA的裂变阻力的影响以及粘合剂和混合物的性能相关参数之间的相关关系
Ronghua Gu1,2, Jing Xu3, Weihua Wan1,2
1Jiangxi Transportation Engineering Group Co., Ltd., Nanchang 330000, China.
Materials (Basel, Switzerland)
|December 11, 2025
概括
软化油显著提高了青裂纹的抵抗力,生物油比石油油更有效. 这项研究揭示了粘合剂和混合物裂解特性之间的强烈相关性,这些特性随着年龄的增长而降低.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 青粘合剂需要在极端温度和重负荷下对和裂有很好的抵抗力.
- 对于耐用路面而言, styrene-butadiene-styrene-modified asphalt (SBSMA) 的性能是至关重要的.
- 了解软化油对青裂纹的影响对于材料改进至关重要.
研究的目的:
- 评估软化油 (生物油和REOB) 在提高SBSMA的裂变性能方面的有效性.
- 分析粘合剂和混合物裂变特性之间的相关性.
- 评估氧化衰老对抗裂耐性的影响.
主要方法:
- 使用了风病学指数和裂纹测试 (M G-R, δ8967 kPa, Nf,刚度, m-值, IDEAL-CT).
- 生物基油 (生物油) 和石油基油 (REOB) 被用作软化剂.
- 模拟了氧化衰老,并通过福里埃变换红外光谱 (FTIR) 测量了碳烯指数.
主要成果:
- 软化油显著提高了青裂纹的性能.
- 生物油在增强压力放松方面,其效率是REOB的4-6倍.
- 裂变参数显示强烈的相关性 (R2>0.85),但随着年龄的增长而下降.
结论:
- 软化油对青裂纹抵抗有好处,特别是生物油.
- 粘合剂的疲劳寿命决定了中温裂变,而放松特性则影响了低温裂变.
- 衰老会对裂纹性能产生负面影响,这凸显了材料稳定性的重要性.
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