Design and Evaluation of Permeable Asphalt Pavement with Cecabase for Warm Mix Applications

The current research aims to address two major issues related to pavements and their construction, particularly surface water logging and massive emissions during the production of hot mix asphalt (HMA), which eventually lead to increased driving safety, longer pavement life, and environmental sustainability. To resolve these issues holistically, the flexible pavement was designed as an open-graded mix (permeable pavement) using warm mix asphalt (WMA) with Cecabase, a chemical additive that decreases asphalt production temperatures and increases pavement performance. Open-graded warm mix asphalt (OGWMA) is a relatively new paving material that offers lower production temperatures, reduced emissions, and improved workability, making it a promising choice for pervious pavement construction. A coarse-textured, open-graded surface and a high, interlinked air void throughout are the features of this kind of mix. Because it is poured and set at lower temperatures and produces less fumes, smoke, and dust, it requires fewer fossil fuels and resources, which benefits the ecology and the health of its workers. Moreover, cecabase enhances the workability of asphalt mixes without affecting the bitumen grade, facilitates simpler field compaction, and provides strong adhesion of the asphalt binder to aggregates. The research involves a mechanistic-empirical approach in designing the pavement, which considers traffic loads, material properties, and environmental conditions to predict pavement performance. For evaluating the feasibility of using WMA technologies, it is essential to analyze the long-term performance of the warm mix pervious pavement, which was also executed in this study using HDM-4. The results show that OGWMA possesses greatly improved resistance to binder aging, better compatibility, and higher durability with the elimination of ravelling and moisture damage. This indicates that the potential of permeable asphalt pavement in combination with WMA technology may serve as a sustainable and efficient alternative to traditional asphalt materials and methods.