Analisa Perubahan Keretakan Tanah Di Permukaan Pada Skala Laboratorium Untuk Tanah Asli Dan Tanah Terstabilisasi Dengan Perlakuan Proses Pengeringan (Lokasi Studi: Tanggul Sungai Bengawan Solo)

Firmansyah, Yerry Kahaditu (2021) Analisa Perubahan Keretakan Tanah Di Permukaan Pada Skala Laboratorium Untuk Tanah Asli Dan Tanah Terstabilisasi Dengan Perlakuan Proses Pengeringan (Lokasi Studi: Tanggul Sungai Bengawan Solo). Doctoral thesis, Institut Teknologi Sepuluh Nopember.

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[thumbnail of 03111660010010-Dissertation.pdf] Text
03111660010010-Dissertation.pdf - Accepted Version
Restricted to Repository staff only until 1 October 2023.
Download (3MB) | Request a copy
[thumbnail of 03111660010010-Dissertation.pdf] Text
03111660010010-Dissertation.pdf - Accepted Version
Restricted to Repository staff only until 1 October 2023.
Download (3MB) | Request a copy

Abstract

Keretakan merupakan fenomena yang sangat kompleks terutama pada material tanah. Keretakan pada tanah mengakibatkan terbentuknya zona perlemahan dari suatu massa tanah yang berdampak menurunnya kekuatan dan stabilitas tanah. Material tanah yang digunakan sebagai penelitian berasal dari tanggul sungai Bengawan Solo yang merupakan tanah asli dipadatkan. Penelitian ini membahas bagaimana dampak proses pengeringan terhadap perubahan keretakan tanah pada tanggul sungai Bengawan Solo, desa Pelangwot, Kab. Lamongan, Jawa Timur, Indonesia, baik pada kondisi inisial maupun yang menggunakan bahan stabilisasi dalam skala laboratorium.
Penelitian ini dilakukan dilaboratorium mengidentifikasi propertis tanah in-situ dan mengumpulkan sample tanah (undisturbed dan disturbed samples). Sedangkan, pengujian tanah di laboratorium difokuskan pada analisa sifat fisis, mekanis, dinamis, foto keretakan pada skala makro dan mikro, perilaku keretakan setelah adanya pemberian mikroorganisme, serta pengaruh proses pengeringan.
Hasil dari penelitian ini adalah bahwa untuk tanah kondisi inisial terjadi keretakan sejak fase awal proses pengeringan. Tanah kondisi inisial memiliki nilai crack intensity factor (CIF) diakhir proses pengeringan dan memiliki laju keretakan yang sangat cepat. Laju keretakan maksimum untuk tanah kondisi inisial mencapai dan memiliki lebar keretakan yang sangat besar diakhir fase pengeringan. Tanah terstabilisasi dengan kapur memiliki nilai CIF yang paling kecil Untuk benda uji tanah terstabilisasi kapur terlihat bahwa saat pengeringan angka pori tanah mengecil. Untuk benda uji tanah terstabilisasi FAG terlihat bahwa saat pengeringan angka pori tanah.

Kata kunci: Proses pengeringan, perubahan keretakan, fly ash-based geopolymer (FAG), kapur.
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Cracks are a very complex phenomenon especially in soil materials. Cracks in
the soil result in the formation of a weakening zone of a soil mass which has the effect
of decreasing the strength and stability of the soil. The soil material used as research
comes from the Bengawan Solo river embankment which is solidified original land.
This study discusses how the impact of the drying process on the change of soil cracks
in the bengawan solo river embankment, Pelangwot village, Lamongan District, East
Java, Indonesia, both in initial condition and using stabilization materials in laboratory
scale.
This research was conducted inlaboratorium identifying the properties of insitu soil and collecting soil samples (undisturbed and disturbed samples). Meanwhile,
soil testing in the laboratory is focused on analyzing the physic, mechanical, dynamic,
macro and microscale photos, the behavior of cracks after being given
microorganisms, as well as the influence of the drying process.
The result of this study is that for soil initial condition occurs cracks since the
initial phase of the drying process. Soil initial condition has a crack intensity factor
(CIF) value at the end of the drying process and has a very fast crack rate in the range
of water content. The maximum crack rate for soil initial condition has a very large
crack width at the end of the drying phase. Soil stabilization with lime has the least
CIF value compared to other materials. Soil stabilization with lime is very effective in
preventing cracks in the surface area when compared between lime stabilization
material.
Keywords: Drying process, crack change, fly ash-based geopolymer (FAG), lime.

Item Type: Thesis (Doctoral)
Uncontrolled Keywords: Proses pengeringan, perubahan keretakan, fly ash-based geopolymer (FAG), kapur.
Subjects: A General Works > AS Academies and learned societies (General)
A General Works > AS Academies and learned societies (General)
Divisions: Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22001-(S3) PhD Thesis
Depositing User: Yerry Kahaditu Firmansyah
Date Deposited: 01 Sep 2021 02:20
Last Modified: 01 Sep 2021 02:20
URI: http://repository.its.ac.id/id/eprint/91582

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