Experimental and Numerical Investigations on an Organic Phase Change Material Incorporated Cool Concrete Pavement

Background: Traditionally, cool pavements have been designed as reflective, evaporative, etc. Though the reflective reduce pavement surface temperature significantly, they increase glare, thermal burden on pedestrian traffic, and of nearby buildings. In case evaporative pavements, absence water, reduced inertia solar reflection result in a higher temperature. As result, there has pressing need to investigate new low-side-effect options. Objective: The study aims analyze effect phase change material (PCM) incorporation performance concrete develop total enthalpy-based numerical heat transfer model for such pavements. Materials Methods: A paraffin-based organic PCM with melting point 42 45 °C was used this work, expanded clay aggregate (ECA) an encapsulation medium. Concrete slabs without PCM-impregnated ECAs were cast, thermocouples implanted monitor continuously. developed predict Results: 2.24 annual average maximum reduction 4.12 °C. Conclusion: effectively reduces during daytime makes cooler. Increasing encapsulating medium's porosity slab's conductivity enhances cooling potential. However, characteristics may be neglected their impact is less