Analisa Perilaku Mekanik Cement-lime Treated Clay Soil Menggunakan Kekangan Pasif

Asyifa, Hira (2024) Analisa Perilaku Mekanik Cement-lime Treated Clay Soil Menggunakan Kekangan Pasif. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Tanah lempung lunak memiliki daya dukung rendah, masalah swelling, dan plastisitas tinggi sehingga perlu distabilisasi agar dapat difungsikan sebagai pondasi atau lapis perkerasan jalan yang baik. Metode stabilisasi menggunakan cement-lime treated soil (CTS) dengan Ordinary Portland Cement (OPC) dan kapur (CaO) dapat meningkatkan nilai Unconfined Compressive Strength dan California Bearing Ratio tanah lempung lunak.
Spesimen dibuat dengan mix design optimum menggunakan metode standard proctor test yang akan diuji pada usia 7 hari. Aplikasi lembaran GFRP dilakukan satu hari sebelum pengujian dilakukan supaya matriks dapat kering dan mengikat CTS dengan GFRP secara baik.
Pengujian Uniaxial Compressive Strength Test akan dilakukan untuk cement-lime treated soil (CTS) dengan Ordinary Portland Cement (OPC) dan kapur tohor (CaO) dengan kekangan pasif (1, 2, dan 3 ply glass fiber reinforced polymer atau GFRP). Kekangan pasif GFRP berfungsi sebagai tegangan lateral pada spesimen, sedangkan tegangan aksial didapat dari tekanan vertikal pada spesimen. Tujuan dari penelitian ini adalah untuk mengetahui kriteria keruntuhan, fracture energy, parameter triaksial spesimen (kohesi dan sudut geser tanah), serta perilaku volumetris spesimen CTS.
Dari penelitian ini, didapatkan hasil variasi mix design optimum untuk cement-lime treated clay soil adalah 8% semen dan 4% kapur. Variasi ini digunakan sebagai mix design pada pengujian tekan CTS dengan kekangan GFRP. Dari pengujian tekan, didapat bahwa keruntuhan CTS terkekang cenderung getas. Dari analisa lebih lanjut mengenai regangan volumetrik, didapatkan f’cc sebesar 3.3 MPa, 6.78 MPa, dan 10.78 MPa untuk CTS dengan 1, 2, dan 3 lapis kekangan GFRP.
Kata kunci: cement-lime treated soil, ordinary portland cement, kapur, kapur tohor, passive confinement, triaksial, fracture energy, Mohr coulomb, glass fiber reinforced polymer, volumetric strain, stress path
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Soft clay soil has low bearing capacity, swelling issues, and high plasticity, making it necessary to stabilize it for use as a foundation or road pavement layer. The stabilization method using cement-lime treated soil (CTS) with Ordinary Portland Cement (OPC) and lime (CaO) can increase the Unconfined Compressive Strength and California Bearing Ratio of soft clay soil.
Specimens were prepared with an optimal mix design using the standard Proctor test method and tested at 7 days of age. A GFRP sheet application was performed one day before testing to ensure the matrix dries and bonds well with the CTS and GFRP.
The Uniaxial Compressive Strength Test will be conducted on CTS with OPC and quicklime (CaO) under passive confinement (1, 2, and 3 ply glass fiber reinforced polymer or GFRP). The GFRP passive confinement provides lateral stress on the specimens, while the axial stress is obtained from vertical pressure on the specimens. The aim of this study is to determine the failure criteria, fracture energy, triaxial parameters (cohesion and soil shear angle), and volumetric behavior of the CTS specimens.
The study found that the optimal mix design variation for cement-lime treated clay soil is 8% cement and 4% lime. This variation was used as the mix design for compressive testing of CTS with GFRP confinement. The compressive test results showed that the failure of confined CTS tended to be brittle. Further analysis of volumetric strain revealed f’cc values of 3.3 MPa, 6.78 MPa, and 10.78 MPa for CTS with 1, 2, and 3 layers of GFRP confinement.
Keywords: cement-lime treated soil, ordinary Portland cement, lime, quicklime, passive confinement, triaxial, fracture energy, Mohr-Coulomb, glass fiber reinforced polymer, volumetric strain, stress path

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	cement-lime treated soil, ordinary Portland cement, lime, quicklime, passive confinement, triaxial, fracture energy, Mohr-Coulomb, glass fiber reinforced polymer, volumetric strain, stress path
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA169.5 Failure analysis T Technology > TA Engineering (General). Civil engineering (General) > TA433 Strength of materials. T Technology > TA Engineering (General). Civil engineering (General) > TA455.S6 Soil (Materials of engineering and construction) T Technology > TA Engineering (General). Civil engineering (General) > TA749 Soil stabilization
Divisions:	Faculty of Civil Engineering and Planning > Civil Engineering > 22101-(S2) Master Thesis
Depositing User:	Hira Asyifa
Date Deposited:	08 Aug 2024 09:00
Last Modified:	08 Aug 2024 09:00
URI:	http://repository.its.ac.id/id/eprint/114959

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