The Effect of Adding Ketapang Fruit Ash on the Physical and Mechanical Properties of Geopolymer Concrete Based on High-Calcium Fly Ash Type C with Alkali Activator by Rina Martiana, Sofia Afsa Liza, Candra Wani, Sri Hilmayati, Alpiana Puji Astuti, Jannatin 'Ardhuha

“…JPFT (Jurnal Pendidikan Fisika dan Teknologi)…”
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