Amar, T.I.K., Magfirona, A., Rosadi, D. and Putri, N.F. 2025. Optimizing the Use of Recycled Materials in Environmentally Friendly Concrete Block Production. ASTONJADRO. 14, 2 (May 2025), 474–483. DOI:https://doi.org/10.32832/astonjadro.v14i2.17348.