1. 1658/2006, E (2006). Egyptian Standard Specification. Testing of Concrete.
2. ACI. (1997). American Concrete Institute Committee 211, Standard practice for selecting proportions for normal, heavyweight, and mass concrete [211.1-91: Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete (Reapproved 2009)]. American Concrete Institute.
3. Characterization of water treatment sludge and its reuse as coagulant;Ahmad;J. Environ. Manag.,2016
4. Ahmed, M., B., Zhou, J., L, Ngo, H., H., & Guo, W. (201). Insight into biochar properties and its cost analysis. Biomass and Bioenergy, 84, 76-86. https://doi.org/10.1016/j.biombioe.2015.1011.1002.
5. A qualitative and quantitative approach to prioritize sustainable concrete using TOPSIS Advances in Sustainable Construction Materials;Arukala,2020