PENGARUH PENAMBAHAN FLY ASH PADA TANAH LEMPUNG TERHADAP PARAMETER KONSOLIDASI

Kukuh Prihatin

Abstract


Tanah adalah penopang pondasi yang merupakan bagian struktur bangunan. Jika daya dukung tanahnya rendah dan pemampatan tinggi, maka akan berakibat kegagalan pada struktur diatasnya. Fly ash adalah limbah batu bara yang dapat digunakan sebagai alternatif untuk meningkatkan daya dukung dan memperkecil pemampatan. Pada penelitian ini dilakukan percobaan konsolidasi untuk mengetahui perubahan parameter konsolidasi dengan adanya penambahan fly ash 0%, 5%, 10%, 15% dan 20% pada tanah lempung berplastisitas rendah (CL). Hasilnya menunjukkan semakin besar prosentase fly ash maka semakin kecil angka pori (e) dan koefisien konsolidasi (Cv), kecuali pada tekanan 400 kPa fly ash 5% nilai Cv paling kecil. Sedangkan koefisien tekanan (av), koefisien kompressibilitas volume (mv) dan indeks pemampatan (Cc) meningkat dengan bertambahnya prosentase fly ash, kecuali pada fly ash 10% diperoleh nilai av, mv dan Cc terkecil.

Kata kunci : fly ash, lempung, konsolidasi

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References


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DOI: https://doi.org/10.46964/inersia.v7i1.50

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