添加热青混合添加剂对回收磨涂料的影响:性能评估
Jeovanesa Regis Carvalho1, Osires de Medeiros Melo Neto2, Adriano Elísio de Figueiredo Lopes Lucena3
1Department of Civil Engineering, Federal University of Sergipe, Rosa Elze, São Cristóvão, SE, 49100-000, Brazil.
Environmental science and pollution research international
|December 2, 2024
概括
热混合青 (WMA) 添加剂提高了回收青路面 (RAP) 的性能. 研究表明,WMA添加剂可以改善粘合剂激活和机械性能,从而使可持续道路建设的RAP含量更高.
科学领域:
- 铺路工程工程 铺路工程
- 材料科学 材料科学 材料科学
- 可持续建筑 可持续建筑
背景情况:
- 在使用热混合青 (WMA) 和回收青路面 (RAP) 的青混合物中优化粘合剂激活和机械性能具有挑战性.
- 评估WMA添加剂和不同的RAP含量对于改善再生青混合物性能至关重要.
研究的目的:
- 评估三种WMA添加剂 (向日油,WarmGrip®,天然地) 和RAP含量 (30%,70%) 对回收青混合物的影响.
- 分析RAP粘合剂激活,质和机械性能,包括抗拉强度,耐湿性,模量,疲劳寿命和抗变形性.
主要方法:
- 对RAP和改性结合剂进行化学和风湿学分析.
- 用不同的WMA添加剂和RAP含量的回收青混合物的机械测试.
- 评估RAP粘合剂激活度及其对混合物性能的影响.
主要成果:
- 观察到部分RAP结合剂激活 (96.16%在30%的RAP, 80.77%在70%的RAP).
- 太阳花油降低了粘合剂的刚性;天然热带石提高了防潮能力 (TSR值高出20%).
- 温暖的回收混合物显示出增强的疲劳寿命和抗变形能力,特别是WarmGrip®.
结论:
- 在不影响机械性能的情况下,WMA添加剂可促进更高的RAP整合 (高达70%).
- WMA和RAP添加剂提高了青路面施工中的可持续性,成本效益和耐久性.
- 这项研究支持使用WMA添加剂来提高再生青混合物的性能.
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