@article{omar_hussian_sultan_2026,  title={Integrating nano-silica and silica fume to enhance the mechanical properties of LECA-based lightweight concrete},  volume={31},  ISSN={1517-7076},  url={https://doi.org/10.1590/1517-7076-RMAT-2025-0770},  DOI={10.1590/1517-7076-RMAT-2025-0770},  journal={Matéria (Rio de Janeiro)},  publisher={Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro, em cooperação com a Associação Brasileira do Hidrogênio, ABH2},  author={Omar, Mustafa Hasan and Hussian, Wissam Abdulkareem and Sultan, Farah Awad},  year={2026},  pages={e20250770} }