Nurlita Pertiwi, Irma Aswani Ahmad, and Sarfa Hafid. “Feasibility of Green Concrete As a Material of Precast Beams for Residential House”. 2023. The International Journal of Science & Technoledge, vol. 11, no. 9, Oct. 2023, doi:10.24940/theijst/2023/v11/i9/ST2309-003.