封装废油和压缩方法对冷混合青的固化和强度的影响
Hassan Ziari1, Elaheh Nasiriamiri2, Pooyan Ayar3
1School of Civil Engineering, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran. h.ziari@iust.ac.ir.
Scientific reports
|July 22, 2025
概括
含废油的藻酸盐囊改善了冷混合青 (CMA) 的固化和耐用性. 添加0.5-1%的囊可以提高耐湿性和机械性能,特别是在具有挑战性的条件下.
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.
- 可持续建筑 可持续建筑
背景情况:
- 冷混合青 (CMA) 与热混合青 (HMA) 相比,提供了环境优势,但面临着湿度易感性和性能方面的挑战.
- 目前对CMA复发囊的研究主要集中在自我愈合特性上.
研究的目的:
- 评估含有废日油 (WSO) 和废发动机油 (WEO) 的藻酸盐 (CA) 囊,以提高CMA性能.
- 评估CA囊对不同压缩方法和固化时间的固化效率,强度发展和机械行为的影响.
主要方法:
- 使用场发射扫描电子显微镜 (FESEM) -EDS-Map和热重力测量分析 (TGA) 进行CA囊的表征.
- 评估CMA的机械性能,包括间接抗拉强度 (ITS),抗拉强度比 (TSR),形和半圆形曲 (SCB) 测试.
- 马歇尔压缩混合物 (MCM) 和陀螺压缩混合物 (GCM) 方法的比较.
主要成果:
- 含有0.5%CA囊的混合物显示由于增加水分损失而加速固化.
- 在GCM样本中,ITS显著高于MCM样本.
- 添加CA囊可提高TSR高达10%,表明增强的耐湿性.
- 破裂能量在低温下增加,使用含有WSO的囊.
- 压缩方法是影响ITS,TSR和断裂能量的主要因素;囊类型影响了深.
结论:
- 基于油的CA囊,特别是0.5-1%的含量,提高了CMA的固化效率和耐用性.
- 与WEO相比,含有WSO的CA囊与青矩阵具有更好的兼容性.
- 该研究展示了一种可行的方法来提高CMA的可持续性和性能,特别是在不利的环境条件下.
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