纯青和老青之间的混合行为量化评估,其中包括一种新的生物基热混合复原剂
Le Yu1, Shiyuan You1,2, Zhaoyi He1,3
1School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
Materials (Basel, Switzerland)
|August 29, 2024
概括
该研究引入了一种新的方法来测量初始和老青的混合程度,发现一种生物基热混合复原剂可以改善这种混合. 更高的温度和最优的持续时间提高了再生混合程度,以提高道路性能.
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.
- 青技术技术的使用
背景情况:
- 处女和老青之间的混合程度显著影响回收青混合物的性能.
- 了解和量化这种混合行为对于优化青回收过程至关重要.
研究的目的:
- 创新地研究使用一种新的生物基热混合复原剂 (BWR) 的处女和老青之间的混合行为.
- 提出和验证基于微观形态学的再生混合度 (RBD) 的定量指数.
- 研究混合温度和持续时间对RBD的影响.
主要方法:
- 利用原子力显微镜 (AFM) 来分析混合青中的微形态变异.
- 提出了一个从二维和三维微形态参数中得出的再生混合度 (RBD) 指数.
- 研究了不同混合温度和持续时间对RBD的影响.
主要成果:
- 处女和老青的再生混合程度比处女和回收青在相同条件下更高.
- 在基于3D微形态的RBD和BWR的剂量之间发现了强烈的线性相关性 (R2=0.98).
- 混合温度的提高始终改善了RBD,而混合持续时间显示最初的增加随后的下降.
结论:
- 较高的混合温度和适当的混合持续时间对原始和回收青之间的混合过程产生积极影响.
- 拟议的RBD指数,特别是使用3D微形态计算时,可以更准确地量化青混合行为.
- 该研究强调了BWR在提高再生青混合物的混合和再生性能方面的有效性.
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