PENGARUH SUBSTITUSI ABU CANGKANG KELAPA SAWIT (ABU BOILER) TERHADAP KUAT TEKAN DAN WORKABILITY BETON FC 21 MPA. Kohesi [Internet]. 2026 Oct. 20 [cited 2026 Oct. 20];11(5). Available from: https://journal.cib.institute/index.php/kohesi/article/view/5520