PENGARUH PENAMBAHAN CANGKANG KELAPA SAWIT SEBAGAI SUBSTITUSI AGREGAT KASAR TERHADAP KUAT TEKAN BETON

Risky Akbar Yusda (Mahasiswa Program Studi Teknik Sipil, Fakultas Teknik Dan Komputer, Universitas Harapan Medan.)
Ellyza Chairina (Dosen Pembimbing Program Studi Teknik Sipil, Fakultas Teknik Dan Komputer, Universitas Harapan Medan.)

Jurnal Teknik Sipil
Vol 5, No 1 (2026): Edisi Juni

The growing demand for concrete encourages the use of agricultural waste as eco-friendly materials, one of which is palm oil shells as a substitute for coarse aggregate. This study examined the effect of palm oil shell addition (5% and 7.5%) on concrete compressive strength. Tests on cylindrical specimens at 28 days showed that 5% addition increased strength to 33.24 MPa compared to 32.66 MPa for normal concrete, while 7.5% reduced it to 30.34 MPa. The results indicate that the optimum percentage is 5%, producing concrete with acceptable strength.