硫聚合物开发低碳再生青路面
Mohammad Doroudgar1, Mohammadjavad Kazemi2, Shadi Saadeh1
1Department of Civil Engineering and Construction Engineering Management, California State University Long Beach, Long Beach, CA 90840, USA.
Polymers
|January 28, 2026
概括
一种新型的硫聚合物增强了回收青路面 (RAP) 混合物,提高了抗裂性能,减少了对环境的影响. 这种可持续的修饰剂为青应用提供了低碳的替代方案.
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.
- 可持续化学 可持续化学
背景情况:
- 回收青路面 (RAP) 的使用受到由于老化的粘合剂弹性而受到裂纹易受性的限制.
- 传统的聚合物修饰剂 (例如, styrene-butadiene styrene) 是昂贵的和碳密集的.
研究的目的:
- 开发和评估一种低碳硫基三元聚合物,作为含有25% RAP的青混合物的修饰剂.
- 评估硫聚合物在各种老化条件下对抗裂变,腐蚀和潮湿损伤的影响.
主要方法:
- 硫聚合物通过TiO2催化逆化与废食用油和生物炭合成.
- 使用硫聚合物修改了25%的热混合青混合物.
- 进行了加速老化 (热和紫外线) 和机械测试 (IDEAL-CT,HWT).
主要成果:
- 经过修改的混合物在未经老化和老化条件下显示出更好的抗裂性 (IDEAL-CT).
- 腐蚀和防潮损伤 (HWT) 并没有受到负面影响.
- 一个简化的环境分析表明,当用硫聚合物代替石油粘合剂时,全球变暖潜力减少了11%.
结论:
- 开发的硫聚合物系统提高了RAP青混合物的抗裂性能,即使在老化后也是如此.
- 修饰器不会损害防滑或防潮性能.
- 这种可持续的硫聚合物为青改造提供了可行的低碳替代品,减少了体现的碳.
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