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All Journal Briliant: Jurnal Riset dan Konseptual International Journal of Eco-Innovation in Science and Engineering (IJEISE)
Damayanti, Apta Kania
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Effect of Fosroc Cebex-100 and Fly Ash Stabilization on the Microstructural Properties of Soft Soil Farichah, Himatul; Firmansyah, Yerry Kahaditu; Puspitasari, Nia Dwi; Damayanti, Apta Kania
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 5 No. 2 (2024): IJEISE
Publisher : UPN Veteran Jatim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ijeise.v5i2.133

Abstract

This study investigates the microstructural effects of stabilizing soft soil using fly ash and Fosroc Cebex-100. The soft soil used in this study was collected from the construction site of the Northern Ring Road (JLU) Section 1 in Lamongan regency. Firstly, a series of laboratory soil test was performed to obtain the index properties of the soil sample including unit weight, specific gravity, Atterberg’s limits, optimum moisture content, and maximum dry unit weight. The soil was then treated with three variations of fly ash (20%, 25%, and 30%), while the Fosroc Cebex-100 dosage was held constant at 0.45% of the fly ash weight. A CBR test indicated that a 20% fly ash and Fosroc Cebex-100 mixture achieved the highest CBR value. Consequently, this optimal mix was selected for SEM-EDX (Scanning Electron Microscopy - Energy-Dispersive X-ray Spectroscopy) analysis to further examine microstructural characteristics. Additional fly ash and Fosroc Cebex-100 to the soft soil will influence the microstructural properties of the soil. SEM analysis show that addition of fly ash and Fosroc Cebex-100 results in significant changes in the soil matrix, including increased particle bonding, reduced porosity, and a denser overall structure. Moreover, the addition of fly ash and Fosroc Cebex-100 contribute to the presence of iron (Fe) in the treated soil.
Stabilisasi Tanah Lunak Menggunakan Kombinasi Fosroc Cebex-100 Dan Fly Ash untuk Meningkatkan Nilai CBR Damayanti, Apta Kania; Kahaditu F, Yerry; Farichah, Himatul
BRILIANT: Jurnal Riset dan Konseptual Vol 10 No 3 (2025): Volume 10 Nomor 3, Agustus 2025
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v10i3.2027

Abstract

Soft clay type soil has a low bearing capacity; therefore, a special handling is required by performing soil stabilization. The case study in this research is located in the construction project of Jalan Lingkar Utara (JLU) Lamongan Regency STA 1+000 s/d STA 1+100. The soil stabilization method carried out in this research is using a chemical method that combines fosroc cebex-100 and class C fly ash. 3 variations of the percentage combination of stabilizers used are 20% fly ash + 0.45% fosroc cebex-100 for variation 1, 25% fly ash + 0.45% fosroc cebex-100 for variation 2 and 30% fly ash + 0.45% fosroc cebex-100 for variation 3. The results of this study show that along with the increase in the composition of the combination of stabilizers in the soil can cause an influence on the physical properties of the soil, namely a decrease in the value of water content, specific gravity, Atterberg boundaries, and soil plasticity index. Meanwhile, the mechanical properties of the soil show an increase in the CBR value as the proportion of stabilizers used increases. The original soil CBR value of 5.87% increased to 8.23% in variation 1, to 6.44% in variation 2, and to 6.06% in variation 3.
Co-Authors Firmansyah, Yerry Kahaditu Kahaditu F, Yerry Nia Dwi Puspitasari