Ramadhanti, Banyu Bening and Dr. Eng. Andre Primantyo Hendrawan, ST., MT. and Dr. Ir. Runi Asmaranto, ST., MT. (2023) Perbandingan Hasil Stabilisasi dengan Menggunakan Volcanic Ash dan Kapur pada Tanah Ekspansif di Kawasan Citraland Surabaya Jawa Timur. Sarjana thesis, Universitas Brawijaya.
Abstract
Telah diketahui bahwa lempung ekspansif adalah jenis tanah problematik karena mudah mengembang dan menyusut akibat perubahan kadar air tanah. Struktur perkerasan jalan, gedung dan jembatan yang dibangun di atas tanah jenis ini akan mengalami kerusakan atau keruntuhan. Untuk meningkatkan daya dukung dan kekuatannya, proses perbaikan tanah berupa stabilisasi telah sering digunakan. Pada studi ini, material abu vulkanik (volcanic ash) dari Gunung Kelud dan bubuk kapur komersial digunakan sebagai stabilizer untuk meningkatkan karakteristik kekuatan lempung ekspansif yang diambil dari wilayah barat kota Surabaya, Provinsi Jawa Timur Indonesia. Di laboratorium, benda uji eksperimental diambil dengan cara menyampurkan 15% bahan volcanic ash dan kapur dengan tanah ekspansif untuk mengevaluasi pengaruhnya terhadap kuat tekan bebasnya (unconfined compression strength, UCS). Nilai kadar air optimum (OMC) dan kepadatan kering maksimum (MDD) didapat dari pemadatan Standard Proctor. Dari hasil penelitian dapat ditunjukkan bahwa volcanic ash dan kapur mampu menurunkan harga indeks plastisitas lempung ekspansif. Peningkatan tertinggi nilai UCS diamati pada benda uji yang distabilisasi dengan 15% volcanic ash. Pada proses pemadatan, penambahan volcanic ash dan kapur dapat meningkatkan kepadatan kering maksimum tetapi menurunkan kadar air optimum dari benda uji lempung ekspansif.
English Abstract
It is well known that expansive clay is a problematic soil because it is easy to expand and shrink due to changes in soil moisture content. Pavement structures, buildings and bridges that built on such soils are exposed to damage or failure. To improve its bearing capacity and strength, the process of soil improvement using stabilization is commonly used. In this study, volcanic ash material from Mount Kelud and the commercial lime powder were used as stabilizer to improve the strength properties of expansive clay taken from western part of Surabaya city, East Java Province Indonesia. In the laboratory, experimental samples were taken by mixing 15% of volcanic ash and lime with expansive clay to evaluate their effects on its unconfined compression strength (UCS). The optimum moisture content (OMC) and the maximum dry density (MDD) results were found out by using Standard Proctor compaction. It can be shown from the results that volcanic ash and lime decreases the value of plasticity index of expansive clay. Higher increasing of UCS was observed at specimen stabilized with 15% of volcanic ash. In the process of compaction, the addition of volcanic ash and lime can increase the MDD but decreases the OMC of the expansive clay samples.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 052307 |
| Uncontrolled Keywords: | tanah ekspansif, kapur, stabilisasi tanah, volcanic ash |
| Subjects: | 500 Natural sciences and mathematics > 551 Geology, hydrology, meteorology > 551.4 Geomorphology and hydrosphere > 551.48 Hydrology |
| Divisions: | Fakultas Teknik > Teknik Pengairan |
| Depositing User: | Unnamed user with username tunjungsari |
| Date Deposited: | 16 Jan 2024 03:00 |
| Last Modified: | 16 Jan 2024 03:00 |
| URI: | http://repository.ub.ac.id/id/eprint/210645 |
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Text (DALAM MASA EMBARGO)
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