Pengaruh Penambahan Biochar Terhadap Kinerja Beton Self Compacting Concrete

Muh. Jabir M

Authors

Muh. Jabir M Universitas Muhammadiyah Parepare Author

Keywords:

biochar, kuat tekan, daya serap air

Abstract

Biochar digunakan sebagai bahan tambah dalam campuran beton dengan variasi 0%, 5%, 10%, dan 20% terhadap agregat halus. Penelitian dilakukan di Laboratorium Struktur dan Bahan Program Studi Teknik Sipil Universitas Muhammadiyah Parepare menggunakan benda uji silinder berukuran 15 cm × 30 cm. Pengujian meliputi slump test, kuat tekan pada umur 7, 14, dan 28 hari, serta absorpsi air berdasarkan SNI 03-2914-1992. Hasil penelitian menunjukkan bahwa penambahan biochar memengaruhi sifat beton SCC. Nilai slump menurun dari 86,7 mm pada beton normal menjadi 81,7 mm, 78,3 mm, dan 75 mm pada variasi biochar 5%, 10%, dan 20%. Kuat tekan beton umur 28 hari juga mengalami penurunan dari 21,703 MPa menjadi 18,495 MPa, 17,929 MPa, dan 13,399 MPa. Sebaliknya, nilai absorpsi air meningkat dari 1,04% pada beton normal menjadi 1,23%, 1,44%, dan 1,79%. Dengan demikian, penambahan biochar cenderung menurunkan workability dan kuat tekan beton SCC, tetapi meningkatkan absorpsi air beton.

References

[1] Y. Andika, S. Buyung, J. E. Ola, and S. P. Sorong, “Pengaruh Bentuk Benda Uji Terhadap Kuat Tekan Beton Pada Material Lokal LPPM Politeknik Saint Paul Sorong LPPM Politeknik Saint Paul Sorong,” vol. 10, no. 1, pp. 32–35, 2024.

[2] Pratiwi, Nadya Ayu, et al. "Testing the Compressive Strength of Concrete with the Addition of Coconut Shell Waste." Sultra Civil Engineering Journal (SCiEJ) 3.2 (2022): 61-70.

[3] B. Z. Nurjaman, R. Roestaman, and E. Walujodjati, “Pengaruh Penggunaan Agregat Abu Batu Sebagai Pengganti Agregat Halus Alami Terhadap Sifat-Sifat Beton,” J. Konstr., vol. 19, no. 1, pp. 31–42, Aug. 2021, doi: 10.33364/konstruksi/v.19-1.890.

[4] K. G. Santhosh, S. M. Subhani, and A. Bahurudeen, “Cleaner production of concrete by using industrial by-products as fine aggregate: A sustainable solution to excessive river sand mining,” J. Build. Eng., vol. 42, p. 102415, 2021, doi: https://doi.org/10.1016/j.jobe.2021.102415.

[5] L. Wang et al., “Biochar as green additives in cement-based composites with carbon dioxide curing,” J. Clean. Prod., vol. 258, p. 120678, 2020, doi: https://doi.org/10.1016/j.jclepro.2020.120678.

[6] Putri, Rara Eka Dyla, et al. "Potential of Biomass Raw Material for Biochar Production: A Review: POTENSI Bahan Baku Biomassa Untuk Produksi Biochar: Tinjauan." Chemical Engineering Journal Storage (CEJS) 5.4 (2025): 528-553.

[7] D. Wang, A. Jantwal, E. Kaynak, G. Sas, and O. Das, “Case Studies in Construction Materials Promoting internal curing in concrete by replacing sand with sustainable biochar,” Case Stud. Constr. Mater., vol. 22, no. March, p. e04542, 2025, doi: 10.1016/j.cscm.2025.e04542.

[8] Ling, Yifu, et al. "Effect of biochar dosage and fineness on the mechanical properties and durability of concrete." Materials 16.7 (2023): 2809.

[9] D. Wang, A. Jantwal, E. Kaynak, G. Sas, and O. Das, “Promoting internal curing in concrete by replacing sand with sustainable biochar,” Case Stud. Constr. Mater., vol. 22, p. e04542, Jul. 2025, doi: 10.1016/j.cscm.2025.e04542.

[10] A. Aneja, R. L. Sharma, and H. Singh, “Mechanical and durability properties of biochar concrete,” Mater. Today Proc., vol. 65, pp. 3724–3730, 2022, doi: https://doi.org/10.1016/j.matpr.2022.06.371.

[11] Y. Zhang et al., “Biochar as construction materials for achieving carbon neutrality,” Biochar, 2022, doi: 10.1007/s42773-022-00182-x.

[12] Miling, Clara Ratu, Jonie Tanijaya, and Desi Sandy. "Penggunaan Silika Fume dan Viscocrete Sebagai Bahan Tambah Pada Beton SCC (Self Compacting Concrete)." Paulus Civil Engineering Journal 6.4 (2024): 619-627.

[13] Kandou, C., et al. "Performance evaluation of Self-Compaction Concrete (SCC) using sea sand and seawater as sustainable constituents." UNEC Journal of Engineering and Applied Sciences 5.2 (2025): 58.

[14] X. Yang and X.-Y. Wang, “Hydration-strength-durability-workability of biochar-cement binary blends,” J. Build. Eng., vol. 42, p. 103064, 2021, doi: https://doi.org/10.1016/j.jobe.2021.103064.

[15] A. Sirico et al., “Mechanical characterization of cement-based materials containing biochar from gasification,” Constr. Build. Mater., vol. 246, p. 118490, 2020, doi: https://doi.org/10.1016/j.conbuildmat.2020.118490.