Energy Performance of High-Rise Residential Buildings Using Fly Ash Cenosphere as Partial Replacement of Fine Aggregate in MortarSalmia Beddu, Nur Amalina Nadiah Basri, Nur Liyana Mohd Kamal, Daud Mohamad, Zarina Itam, N. Sivakumar and Warid Wazien Ahmad ZailaniMATEC Web Conf., 400 (2024) 01003DOI: https://doi.org/10.1051/matecconf/202440001003