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All Journal Journal of Infrastructure and Civil Engineering Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil
Alwiyah, Sarah
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Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Materials Science & Nanotechnology Transportation

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Pengaruh Campuran Spent Bleaching Earth (SBE) dan Semen Sebagai Bahan Stabilisasi Tanah Lempung Terhadap Nilai California Bearing Ratio (CBR): The Influence of Spent Bleaching Earth (SBE) and Cement Mixture as Clay Soil Stabilization Material on California Bearing Ratio (CBR) Value Alwiyah, Sarah; Anggreana, Vella; Mildawati, Roza
Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Vol. 13 No. 2 (2024): Cantilever
Publisher : Department of Civil Engineering and Planning, Faculty of Engineering, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35139/cantilever.v13i2.296

Abstract

One method for enhancing the natural state of the soil is soil stabilization. Spent bleaching earth (SBE) is the solid waste left over after palm oil is refined for use in oleochemical industry processes. When the field test value exceeds 3% and the laboratory test value exceeds 6%, the soil strength is deemed favorable. The test results indicate that as the curing time increased, the natural soil's California Bearing Ratio (CBR) value increased as well. After 0 days of curing, the natural soil's CBR value was 11.91%; after 4 days, it rose to 12.59%; and after 7 days, it reached 13.99%. Furthermore, the soil that underwent a 4-day soak had a CBR value of 4.01%. Concurrently, the CBR value increased with increasing curing time in the mixed soil CBR test, which had a composition of 10% cement and 22.5% SBE. The mixed soil's CBR value at 0 days of curing was 12.66%. Nevertheless, the CBR value increased significantly to 22.64% after 4 days of curing. Furthermore, the CBR value increased to 27.11% after 7 days of curing. The mixed soil's CBR value was 23.52% over the course of the four-day soaking period. We can conclude that the natural soil and the mixed soil exhibit their highest CBR values following a 7-day curing period. This suggests that the CBR value is influenced by the curing time. In both soil types, a higher CBR value was noted with longer curing times.
Pemanfaatan Perlite Dalam Meningkatkan Kuat Tekan Pada Beton Alwiyah, Sarah; Akbar, Wahyu; Dewi, Sri Hartati; Ardiansyah, Rony
Journal of Infrastructure and Civil Engineering Vol. 5 No. 2 (2025)
Publisher : Program Studi Teknik Sipil Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/jice.v5i2.111

Abstract

Indonesia, sebagai bagian dari Cincin Api Pasifik, memiliki potensi besar dalam ketersediaan perlite, terutama di Pulau Jawa, Bali, dan Nusa Tenggara. Meskipun eksplorasi perlite di Indonesia belum dimanfaatkan optimal untuk industri konstruksi, saat ini perlite lebih banyak digunakan di sektor pertanian, hortikultura, dan bahan isolasi termal. Penelitian ini bertujuan untuk mengeksplorasi pengaruh penambahan perlite terhadap sifat mekanis beton, khususnya kuat tekan. Metode yang digunakan adalah eksperimen laboratorium di Fakultas Teknik, Universitas Islam Riau, dengan mengganti agregat halus dengan perlite pada proporsi 5%, 10%, dan 15%. Penelitian ini juga mengevaluasi pengaruhnya terhadap nilai slump dan kuat tekan beton. Hasil penelitian menunjukkan bahwa peningkatan proporsi perlite meningkatkan slump, yang mencerminkan peningkatan kelecakan beton. Nilai slump beton normal (8, 9 cm) meningkat menjadi 9, 2 cm, 9, 5 cm, dan 9, 7 cm untuk perlite 5%, 10%, dan 15%. Dalam hal kuat tekan, penggantian perlite 5% menghasilkan kuat tekan rata-rata 27, 74 MPa, lebih tinggi dari beton normal (26, 52 MPa). Namun, proporsi perlite 10% dan 15% sedikit menurunkan kuat tekan, dengan nilai rata-rata masing-masing 27, 36 MPa dan 27, 18 MPa. Penelitian ini menyimpulkan bahwa perlite bermanfaat untuk meningkatkan kelecakan beton hingga 5%, namun peningkatan lebih lanjut dapat mengurangi kekuatan struktural.
Co-Authors Anggreana, Vella Ardiansyah, Rony Dewi, Sri Hartati Mildawati, Roza Wahyu Akbar