Pengaruh Penambahan Abu Terbang dan Serbuk Cangkang Kerang Terhadap Karakteristik Tanah Lempung
DOI:
https://doi.org/10.31851/deformasi.v11i1.21608Keywords:
Tanah Lempung Lunak, Stabilisasi, Abu Terbang, Serbuk Cangkang Kerang, KarakteristikAbstract
Tanah memiliki peranan penting pada konstruksi jalan, karena berfungsi sebagai fondasi, Namun tidak semua jenis tanah memiliki persyaratan geoteknik, salah satunya adalah tanah lempung lunak. Tanah lempung lunak dapat menjadi bagian dari konstruksi jalan setelah mengalami proses perbaikan atau stabilisasi. Stabilisasi kimia dengan semen atau kapur telah diterapkan pada konstruksi jalan, namun penggunaannya yang berlebihan mengakibatkan dampak lingkungan seperti peningkatan emisi karbon. Bahan stabilizer lain dikembangkan seperti penggunaan serbuk cangkang kerang yang dikombinasikan abu terbang pada penelitian ini. Penggunaan 10% serbuk cangkang kerang dan variasi abu terbang mulai dari 5%, 10%, 15%, 20% pada tanah lempung lunak akan diteliti terhadap perubahan karakteristiknya. Karakteristik yang ditinjau meliputi kadar air, batas cair, batas plastis, indeks plastisitas, kuat tekan dan kuat geser undrained. Berdasarkan hasil penelitian diperoleh perubahan yang signifikan yaitu penurunan pada nilai kadar air, batas cair, batas plastis dan indeks plastisitas tanah lempung seiring dengan penambahan serbuk cangkang kerang dan abu terbang. Namun pada nilai kuat tekan dan kuat geser undrainednya mengalami peningkatan dan didapatkan nilai optimum pada penambahan 10% serbuk cangkang kerang dan 15% abu terbang, dimana peningkatan mencapai 200% dari kondisi tanah lempung asli.
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