Jonbi J, Fulazzaky MA, Arif H. Assessment of the Precast Concrete Performance by using Sand with High Sludge Content: Effects of Cement and Polycarboxylate Ether. PPASA [Internet]. 2021 Mar. 17 [cited 2024 Dec. 23];56(4):55–61. Available from: https://ppaspk.org/index.php/PPAS-A/article/view/72