MINISTRY OF EDUCATION AND CULTURE UNIVERSITAS GADJAH MADA POSTGRADUATE PROGRAM OF FACULTY OF ENGINEERING POSTGRADUATE PROGRAM STUDY OF GEOLOGICAL ENGINEERING MAGISTER OF PETROLEUM GEOSCIENCE STUDY INTEREST
| Main Authors: | , TRAN THI THANH THUY, , Dr. Doni Prakasa Eka Putra, |
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| Format: | Thesis NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2013
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/120499/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=60530 |
Daftar Isi:
- The roadway in Karangjati, Ngawi Regency, East Java, Indonesia is high potential damage with cracking and deformation due to high expansive soil in a large area. Based on this problem, this research aims to strengthen natural soft soil in this area by using electro-kinetic stabilization. The methodology of the research was conducted by bench scale electro-kinetic experiment and laboratory analysis. Four electro-kinetic experiments were conducted with different electrolyte (calcium chloride CaCl2 or ground water) under different condition (water level constant or flow water). Aluminum plates are selected to be electrodes that stand on a constant power current 13V. As the result, all soil specimens get pH value decrease at anolyte and increase at catholyte. All soil samples get decreasing Atterberg limit with liquid limit (LL) 79.72-86.14%, plastic limit (PL) 25.22-30.80%, and plasticity index (PI) 53.28-60.92, liquidity Index (LI) 0.91-1.08. The compression index Cc is 0.50-0.742. Undrained shear strength of treated soil is from 7-11 kPa. Moreover, strengthening degree of treated soil achieve 304-556%. The XRD analysis resulted that the clay mineral of treated soil is the type of montmorillonite and kaolin clay. Based on the result of research, it is concluded that strengthening soil specimen was achieved with decreasing Atterberg limits, reduction in compressibility and significant increasing undrained shear strength. Soil treated with injected calcium chloride and under flow water is the most effective. Mineralogical composition between untreated and treated soil is not changed. As the expectation for future work, treatment with ground water under water flow condition should be chosen for applying in the field due to more environmentally friendly.