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All Journal Jurnal Tekno Insentif Abdimas UNWAHAS : Jurnal Pengabdian Masyarakat UNWAHAS Journal of Civil Engineering and Planning (JCEP) Jurnal Teknik Sipil Cendekia (JTSC) CRANE: Civil Engineering Research Journal Jurnal Teknik Sipil
Y. Djoko Setiyarto
Program Studi Teknik Sipil, Universitas Komputer Indonesia
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Engineering Medicine & Pharmacology Social Sciences Transportation

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PENGARUH NATRIUM SILIKAT PADA BETON PCC DENGAN PENAMBAHAN ARANG 2% TERHADAP KUAT TEKAN DAN POROSITAS Fikri Fauzi Nur Alam; Muhammad Sihab; Y Djoko Setiyarto
CRANE: Civil Engineering Research Journal Vol 7 No 1 (2026): CRANE - APRIL
Publisher : Program Studi Teknik Sipil, Fakultas Teknik dan Ilmu Komputer, Universitas Komputer Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34010/crane.v7i1.19638

Abstract

The use of sustainable materials in concrete is important to reduce dependence on conventional constituents without compromising material performance. This study investigated the effect of biochar and sodium silicate (Na₂SiO₃) on the compressive strength and porosity of Portland Composite Cement (PCC) concrete. The objective was to analyze the influence of 2% biochar and sodium silicate contents of 5%, 10%, and 15%, and to determine the optimum sodium silicate dosage. An experimental laboratory method was employed using cylindrical specimens measuring 150 × 300 mm. Compressive strength was tested at 7, 14, and 28 days, while porosity was measured at 28 days. The results showed that 5% sodium silicate provided the best performance, with a 28-day compressive strength of 16.49 MPa and the lowest porosity of 1.48%. The addition of 2% biochar alone was not sufficient to improve the 28-day compressive strength. Therefore, 5% sodium silicate was identified as the optimal dosage for producing PCC concrete with a denser internal structure and competitive mechanical performance.
Co-Authors Abduloh, Keisya Nairazzahra Aulia, Gischa Sandrina Bagas Prasetyo Cardina Listiyanti Egi Rizaldi Fahmi Savero Devtrina Falderika Falderika Farros, Diaz Fikri Fauzi Nur Alam Gino Marino Joris, Julia Olivia Junaida Wally M Donie Aulia M Riza Muhammad Riza Muhammad Sihab Mustopa, Muhammad Pramudita Nisa Latifah Gandina Nugroho, Nauval Pramesta Prasetyo, Bagas Pratiwi, Vitta Rangga Wirachma Saputra, Raka Maulana Sherly Meiwa Tri Widianti Natalia Wilson Koven Yatna Supriatna Yongki A T