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PENGARUH PENAMBAHAN BUBUK ALUMINIUM DAN SILIKA FUME TERHADAP KUAT TEKAN DAN POROSITAS BETON NON PASIR Verby Reza Surya Nurdiana; Noviza Ramadhaningsih Aziz; Susi Hariyani; Innino Justitiannisa
NUSANTARA : Jurnal Ilmu Pengetahuan Sosial Vol 13, No 5 (2026): NUSANTARA : Jurnal Ilmu Pengetahuan Sosial
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jips.v13i5.2026.1006-1010

Abstract

Penelitian ini bertujuan untuk mengkaji pengaruh penambahan bubuk aluminium dan silica fume terhadap kuat tekan dan porositas beton non-pasir. Metode yang digunakan adalah eksperimen kuantitatif dengan variasi bubuk aluminium (0%, 0,3%, 0,5%, 0,7%, dan 0,9%) serta silica fume (0%, 2,5%, 5%, 7,5%, dan 10%) berdasarkan berat semen. Sampel paving block diuji pada umur 28 hari untuk mengetahui nilai kuat tekan dan porositas. Pengujian kuat tekan dilakukan menggunakan Compression Testing Machine (CTM), sedangkan porositas diukur dengan membandingkan volume rongga pada setiap benda uji. Hasil penelitian menunjukkan bahwa campuran optimum diperoleh pada penggunaan 0,9% bubuk aluminium dan 2,5% silica fume, dengan kuat tekan sebesar 42,55 kg/cm² dan porositas sebesar 21,07%. Penambahan bubuk aluminium cenderung meningkatkan porositas, sedangkan silica fume dapat meningkatkan kuat tekan. Penelitian ini memberikan kontribusi dalam pengembangan material paving block yang ramah lingkungan serta mampu mengurangi genangan air di permukaan pada area publik.
Analisis Substitusi Abu Ampas Tebu dan Garam terhadap Karakteristik Mekanis pada Stabilitas Tanah Laterit Bella Auliananingsih; Dila Ariyanti; Wattini Wattini; Innino Justitiannisa
Jurnal Talenta Sipil Vol 9, No 2 (2026): Agustus
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v9i2.1428

Abstract

Soil stabilization is a technique commonly applied in construction projects to improve soil strength so that it can adequately support structural loads. In this study, lateritic soil was stabilized using additives in the form of sugarcane bagasse ash (SBA) and coarse salt. A quantitative research approach was employed through a series of laboratory tests. The mixture composition consisted of 3% SBA, while the coarse salt content was varied at 4%, 8%, 12%, 16%, and 20%. The California Bearing Ratio (CBR) test results for the natural soil showed values of 15.00% at 2.5 mm penetration and 19.11% at 5.0 mm penetration with 56 blows. After the addition of SBA and salt, the CBR values exhibited fluctuations. The highest CBR values were obtained from the mixture containing 3% SBA and 8% coarse salt with 56 blows, reaching 26.00% at 2.5 mm penetration and 30.22% at 5.0 mm penetration, indicating a significant improvement in soil bearing capacity. In contrast, the lowest CBR values were observed in the mixture of 3% SBA and 12% coarse salt with 25 blows, yielding only 2.40% at 2.5 mm penetration and 2.78% at 5.0 mm penetration, which indicates a substantial reduction in soil strength. The unconfined compressive strength (UCS) test results showed that the natural soil possessed the highest strength, with a maximum value of 5.88 kg/cm². After stabilization, the UCS values generally decreased, although the mixture with 8% salt still produced values close to those of the natural soil. However, increasing the salt content beyond 12% resulted in a significant decline in soil strength.
Co-Authors Bella Auliananingsih Dila Ariyanti Noviza Ramadhaningsih Aziz Susi Hariyani Verby Reza Surya Nurdiana Wattini Wattini