PENGARUH PENAMBAHAN ABU CANGKANG KEMIRI TERHADAP KUAT TEKAN BETON K-300. JURMATEKS [Internet]. 2020 Jun. 30 [cited 2026 Sep. 22];3(1):12-2. Available from: https://ojs.unik-kediri.ac.id/index.php/jurmateks/article/view/875