Abstract
This study investigates the development and performance of a Thermal Energy Storage system employing cement-based encapsulated phase change materials (PCMs) enhanced by expanded perlite aggregates. The pre-placed aggregates method is used by making Self-leveling High-Performance Mortar (SLM) to integrate aggregates and cementitious matrix. Utilizing the pre-placed aggregate method, PCM-enhanced perlite aggregates were encapsulated through a cementitious process and mixed into SLM to form a consistent TES mortar. The research focuses on optimizing building energy efficiency while maintaining human thermal comfort. Mechanical and rheological properties of the SLM were evaluated, alongside thermal performance assessments. Results demonstrate that the PCM-enhanced SLM mortar, combined with perlite, significantly improves thermal regulation and energy storage capacity, offering a promising solution for sustainable building materials with enhanced thermal comfort.