Pengaruh Stabilisasi Tanah Menggunakan Abu Terbang dan Kapur Terhadap Perubahan Karakteristik Fisk, Mekanik, dan Nilai CBR serva Kadar Karbon dalam Tanah

Yesa, Ignatius Evan (2025) Pengaruh Stabilisasi Tanah Menggunakan Abu Terbang dan Kapur Terhadap Perubahan Karakteristik Fisk, Mekanik, dan Nilai CBR serva Kadar Karbon dalam Tanah. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Integritas tanah dasar (subgrade) merupakan bagian penting dalam menentukan kualitas struktur perkerasan jalan. Karena volume yang dibutuhkan sangat besar, diharapkan semua jenis tanah dapat digunakan sebagai material timbunan untuk subgrade. Namun, agar harapan tersebut terpenuhi, beberapa jenis tanah perlu distabilkan. Fly ash dan kapur merupakan dua stabilisator yang umum digunakan dan terbukti efektif untuk tanah lempung. Dengan menggunakan fly ash, tidak hanya tanah menjadi lebih stabil, tetapi juga meningkatkan pemanfaatan fly ash itu sendiri. Tanah adalah penyimpanan karbon terbesar di bumi, namun proses stabilisasi berpotensi melepaskan karbon tersebut kembali ke atmosfer. Penelitian ini tidak hanya menguji perbaikan tanah akibat stabilisasi, tetapi juga emisi CO2 yang terjadi selama proses stabilisasi berlangsung. Sifat-sifat tanah diuji menggunakan metode ASTM untuk semua pengujian yang diperlukan. Adapun perubahan parameter tanah yang ditinjau akibat proses stabilisasi adalah specific gravity, batas-batas Atterberg, kepadatan kering maksimum, kadar air optimum, nilai CBR, kuat tekan bebas, dan sudut geser dalam. Emisi CO2 diuji menggunakan alat pendeteksi CO2 sederhana. Berdasarkan hasil pengujian pada penelitian ini, tanah terstabilisasi campuran kapur 9% dan abu terbang 25% memiliki parameter fisik dan mekanik terbaik, namun hasil pengujian karbon menyatakan emisi karbon saat stabilisasi masuk dalam kategori mematikan. Campuran bahan stabilisasi yang disarankan adalah kapur 9% dan abu terbang 10% karena parameter fisik dan mekaniknya sudah memenuhi syarat tanah sebagai timbunan subgrade oleh Kementerian PUPR, dan hasil pengujian karbon menyatakan emisi karbon saat stabilisasi masuk dalam kategori berbahaya, namun tidak mematikan.
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The integrity of the subgrade is an essential part of determining the quality of road pavement structures. Since a large volume is required, it is expected that all types of soil can be used as fill material for subgrade. However, to meet this expectation, certain types of soil need to be stabilized. Fly ash and lime are two commonly used stabilizers that have been proven effective for clay soils. By using fly ash, not only does the soil become more stable, but the utilization of fly ash itself is also increased. Soil is the largest carbon storage on earth, but the stabilization process has the potential to release this carbon back into the atmosphere. This study not only examines soil improvement due to stabilization but also CO2 emissions that occur during the stabilization process. Soil properties were tested using ASTM methods for all required tests. The soil parameters reviewed after the stabilization process include specific gravity, Atterberg limits, maximum dry density, optimum water content, CBR value, unconfined compressive strength, and internal friction angle. CO2 emissions were tested using a simple CO2 detection device. Based on the test results in this study, soil stabilized with a mixture of 9% lime and 25% fly ash had the best physical and mechanical parameters. However, carbon testing results indicated that carbon emissions during stabilization fell into the deadly category. The recommended stabilizer mixture is 9% lime and 10% fly ash, as the physical and mechanical parameters met the requirements for soil as subgrade fill by the Ministry of Public Works and Housing (PUPR), and the carbon test results indicated that carbon emissions during stabilization were in the hazardous but non-lethal category.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Stabilisasi, Abu Terbang, Kapur, Emisi CO2, Karbon dalam Tanah, Stabilization, Fly Ash, Lime, CO2 Emissions, Carbon in Soil
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA749 Soil stabilization
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22101-(S2) Master Thesis
Depositing User:	Ignatius Evan Yesa
Date Deposited:	30 Jan 2025 07:35
Last Modified:	30 Jan 2025 07:35
URI:	http://repository.its.ac.id/id/eprint/117149

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