The Potential of High Flow Concrete Mixtures Utilizing Recycled Coal Bottom Ash as Underground Cable Trench Backfill MaterialHanafi Yusop, Md. Fauzan Kamal Md. Yapandi, Mohamed Fetri Zainal, Nor Aishah Abbas, Mohd. Azraei Pangah and Nur Amira Nor ArifinBIO Web Conf., 73 (2023) 05016DOI: https://doi.org/10.1051/bioconf/20237305016