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      Efektivitas Penambahan Sukrosa dan Susu Skim pada Metode SCU-CP Untuk Peningkatan Kekuatan Tanah Pasir

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      Date
      2025
      Author
      Huwaida, Ratna Atika
      Putra, Heriansyah
      Erizal
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      Abstract
      Penelitian ini bertujuan untuk mengevaluasi efektivitas penambahan sukrosa dan susu skim dalam metode Soybean Crude Urease–Calcite Precipitation (SCU-CP) untuk meningkatkan kekuatan tanah pasir. Variasi konsentrasi ekstrak kedelai (20, 60, dan 100 g/L) serta penambahan sukrosa dan susu skim (2, 4, dan 6 g/L) digunakan dalam penelitian ini. Hasil menunjukkan bahwa penambahan kedua aditif meningkatkan viskositas larutan dan kapasitas retensi air, sehingga mendukung terbentuknya distribusi kalsit yang lebih homogen. Kombinasi ekstrak kedelai 100 g/L dan susu skim 6 g/L menghasilkan distribusi kalsit yang paling merata dan nilai kuat tekan bebas (Unconfined Compressive Strength/UCS) tertinggi sebesar 21,3 kPa. Penambahan sukrosa pada konsentrasi 6 g/L juga menunjukkan peningkatan kekuatan tanah dengan nilai UCS maksimum sebesar 18,4 kPa. Secara keseluruhan, penambahan susu menunjukkan pengaruh yang lebih signifikan dibandingkan sukrosa, namun keduanya berkontribusi terhadap peningkatan kekuatan dan homogenitas tanah melalui peningkatan viskositas larutan dan kapasitas retensi air.
       
      This study aims to evaluate the effectiveness of sucrose and skim milk additions in the Soybean Crude Urease–Calcite Precipitation (SCU-CP) method to enhance the strength of sandy soil. Variations of soybean extract concentrations (20, 60, and 100 g/L) as well as sucrose and skim milk additions (2, 4, and 6 g/L) were applied. The results showed that the addition of both additives increased the solution viscosity and water retention capacity, thereby promoting a more homogeneous calcite distribution. The combination of 100 g/L soybean extract and 6 g/L skim milk resulted in the most uniform calcite distribution and the highest unconfined compressive strength (UCS) of 21.3 kPa. The addition of sucrose at 6 g/L also improved soil strength, with a maximum UCS of 18.4 kPa. Overall, skim milk demonstrated a more significant effect than sucrose; however, both contributed to improved soil strength and uniformity through enhanced solution viscosity and moisture retention.
       
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      http://repository.ipb.ac.id/handle/123456789/162564
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      • UT - Civil and Environmental Engineering [1042]

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