STABILISASI TANAH EKSPANSIF DI KECAMATAN LUMBIR, KABUPATEN BANYUMAS, JAWA TENGAH

  • Wawan Budianta Universitas Gadjah Mada
DOI: https://doi.org/10.33579/krvtk.v9i2.5365
Keywords: tanah, ekspansif, banyumas, stabilisasi, gamping

Abstract

Tanah ekspansif dijumpai di beberapa lokasi di Kecamatan Lumbir, Kabupaten Banyumas, Provinsi Jawa Tengah. Keberadaan tanah ekspansif ini mempunyai implikasi terhadap banyaknya kerusakan jalan di lokasi tersebut yang dikarenakan oleh sifat mudah mengembang yang dimiliki oleh tanah ekspansif. Penelitian ini bertujuan untuk melakukan stabilisasi tanah ekspansif di lokasi penelitian dalam skala laboratorium. Tiga sampel tanah diambil di lokasi penelitian dan dilakukan analisis ukuran butir, kandungan mineralogi dan indeks plastisitas. Percobaan laboratorium penambahan kapur dilakukan pada tiga perlakuan yaitu 2,5%, 5%, dan 7,5%. Hasil analisis distribusi ukuran butir, menunjukkan bahwa persentase ukuran butir lempung yang rendah dan didominasi oleh ukuran butir lanau dan termasuk ke dalam golongan loam dan silt loam serta menunjukkan ketiga sampel memiliki gradasi yang cukup buruk. Hasil plotting nilai batas atterberg pada grafik plastisitas, sampel termasuk ke dalam kelompok CH (lempung plastisitas tinggi) dan CL (lempung plastisitas rendah). Analisis mineralogi menunjukkan bahwa sampel tanah tersusun atas mineral kaolinit dan monmorilonit. Kemudian, percobaan dengan melakukan penambahan kapur pada tanah ekspansif dapat menurunkan nilai indeks plastisitas. Penurunan terbesar terjadi pada sampel dengan penambahan kapur 7,5% yang memiliki nilai penurunan indeks plastisitas sebesar 51,23%.

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Published
2024-11-29
How to Cite
[1]
W. Budianta, “STABILISASI TANAH EKSPANSIF DI KECAMATAN LUMBIR, KABUPATEN BANYUMAS, JAWA TENGAH”, Journal Technology of Civil, Electrical, Mechanical, Geology, Mining, and Urban Design, vol. 9, no. 2, pp. 175-182, Nov. 2024.
Issue
Vol 9 No 2 (2024): Energy Management and Sustainable Environment
Section
Articles

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