The high porosity of porous asphalt mixture improves wet skid resistance on pavements and reduces storm water runoff from pavements, but it also makes the mixture prone to raveling, and thus low durability, in the field. This study aims to improve the durability and strength of porous asphalt mixture by formulating bio-based epoxy asphalt binder (BEAB) and improving its mixture design. In the study, a BEAB formula was firstly developed using an epoxidized soybean oil (ESBO) that is considered as a renewable resource. The performance of porous asphalt mixture containing BEAB was then tested and compared with regular porous asphalt mixtures. Based on laboratory test results and analysis, the maleic anhydride is better than several other curing agents for ESBO when mixed in asphalt. The finally selected BEAB formula contains the ESBO, the MA, and neat (control) asphalt at mixing ratios of 7%, 5%, and 88%, respectively. Compared to the control asphalt, the formulated BEAB may improve the raveling resistance and stability of porous asphalt mixture without reducing its permeability. In practice, to achieve balanced pavement performance, a 4.75-mm nominal maximum aggregate size open gradation with an optimal BEAB content is recommended.

多孔沥青混合料的高孔隙率提高了路面的抗湿滑性并减少了路面的雨水径流，但它也使混合料容易散开，从而导致现场耐久性低。本研究旨在通过配制生物基环氧沥青结合料（BEAB）并改进其混合料设计来提高多孔沥青混合料的耐久性和强度。在这项研究中，首先使用被认为是可再生资源的环氧化大豆油 (ESBO) 开发了 BEAB 配方。然后测试了含有 BEAB 的多孔沥青混合料的性能，并与常规多孔沥青混合料进行了比较。根据实验室测试结果和分析，马来酸酐在沥青中混合时优于其他几种 ESBO 固化剂。最终选择的 BEAB 公式包含 ESBO、MA、和纯（对照）沥青的混合比例分别为 7%、5% 和 88%。与对照沥青相比，配制的 BEAB 可提高多孔沥青混合料的抗松散性和稳定性，而不会降低其渗透性。在实践中，为了实现平衡的路面性能，建议使用 4.75 毫米的标称最大骨料尺寸开放级配，并具有最佳 BEAB 含量。