Improving durability of asphalt mixes produced with reclaimed asphalt pavement (RAP) by enhancing binder blending

通过增强粘合剂混合来提高再生沥青路面 (RAP) 生产的沥青混合料的耐久性

• 批准号: 491324-2015
• 负责人: Baaj, Hassan
• 金额: $ 2.82万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=601646
• 关键词: Improving; durability; asphalt; mixes; produced

The road construction industry is strongly linked to the petroleum industry through the use of asphalt binders. However, the price of asphalt binder is linked to the price of crude oil and high volatility has been seen in prices in recent years. Recycling asphalt pavement creates a cycle of reusing materials that optimizes the use of natural resources, such as virgin aggregates and binders. Reclaimed asphalt pavement (RAP) is a sustainable alternative to virgin materials because it reduces the amount of costly new asphalt binders and virgin aggregates required in the production of asphalt paving mixtures. Thus, the use of RAP in asphalt mixes is becoming a common practice by the asphalt paving industry in Canada. However, the durability of asphalt mixtures produced with RAP remains a major challenge. Hence, the main objective of this research proposal is to investigate possible solutions to enhance the performance of asphalt mixes with RAP by increasing the blending between RAP's aged and added virgin binders in the mix.

通过使用沥青粘合剂，道路建筑业与石油行业密切相关。但是，沥青粘合剂的价格与原油的价格有关，近年来已经看到了高波动性。回收沥青路面会产生重复使用材料的循环，以优化自然资源的使用，例如原始聚集物和粘合剂。再生沥青路面（RAP）是维珍材料的可持续替代品，因为它减少了沥青铺路混合物生产中所需的昂贵的新沥青粘合剂和维尔京骨料的量。因此，在加拿大沥青铺路行业中，在沥青混合物中使用说唱正在成为一种常见的做法。但是，用RAP产生的沥青混合物的耐用性仍然是一个重大挑战。因此，这项研究建议的主要目的是研究可能的解决方案，以通过增加RAP的老化和添加的原始粘合剂之间的混合物来增强沥青混合物与RAP的性能。