PENGARUH PENAMBAHAN AMPAS KOPI SEBAGAI CAMPURAN AGREGAT HALUS QUARRY PALEMBAYAN TERHADAP KUAT TEKAN MORTAR. Kohesi: Jurnal Sains dan Teknologi, [S. l.], v. 11, n. 5, 2026. Disponível em: https://journal.cib.institute/index.php/kohesi/article/view/5518. Acesso em: 20 oct. 2026.