沸石基水载体发泡温拌沥青的材料特性、发泡机制与性能研究综述

Material Characteristics, Foaming Mechanism, and Performance Impacts of Zeolite-Based Water Carrier Foamed Warm Mix Asphalt

  • 摘要: 水载体发泡温拌沥青(Warm Mix Asphalt, WMA)通过引入水分诱导沥青发泡,在降低施工温度的同时兼顾路用性能,是道路材料低能耗与绿色化的重要发展方向。系统梳理了沸石基水载体的分类与结构特征、释水与稳定行为及合成与改性特性,阐述了沸石发泡WMA发泡机制、发泡效果的评价方法及影响因素,并总结了发泡过程对WMA混合料性能的影响。现有研究表明,沸石凭借受控释水特性,可实现较为温和的沥青发泡过程,导致传统发泡评价指标难以准确反映其温拌适用性。在此基础上,提出未来研究应聚焦于沸石基水载体的功能化设计、水载体发泡WMA的多相复合与性能提升,以及适用的发泡效果评价体系,并加强其在资源化合成及工艺优化下的生命周期效益评价,以推动该类复合材料的工程应用与可持续发展。

     

    Abstract: Water carrier foamed warm mix asphalt (WMA) achieves asphalt foaming by introducing water, which reduces construction temperature while ensuring pavement performance. It is an important development direction for low-energy consumption and greening of road materials. This work systematically reviews the classification and structural characteristics, water release and stability behavior, as well as synthesis and modification properties of zeolite-based water carriers. The foaming mechanism, evaluation methods of foaming effect and influencing factors of zeolite foamed WMA are elaborated, and the influence of the foaming process on the performance of WMA mixtures is summarized. Existing studies show that zeolites can realize a relatively mild asphalt foaming process due to their controlled water release characteristics, making it difficult for traditional foaming evaluation indexes to accurately reflect its warm mix applicability. On this basis, it is proposed that future research should focus on the functional design of zeolite-based water carriers, the multiphase composite and performance improvement of water-carrier foamed WMA, as well as the applicable evaluation system of foaming effect. Meanwhile, the life cycle benefit evaluation under resource-based synthesis and process optimization should be strengthened to promote the engineering application and sustainable development of such composite materials.

     

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