MARTINS, MARGARETHA JANUASNI JAQUELINA (2025) PENENTUAN FLOW LIMIT PADA MUDFLOW MENGGUNAKAN CYLINDER STRENGTH TEST (Studi Kasus di Desa Cibenda Kabupaten Bandung Barat). S1 thesis, UNIVERSITAS KATOLIK SOEGIJAPRANATA.

Preview	Text 20.B1.0070_MARGARETHA JANUASNI J.M_COVER.pdf Download (646kB) | Preview
	Text 20.B1.0070_MARGARETHA JANUASNI J.M_BAB I.pdf Restricted to Registered users only Download (716kB)
	Text 20.B1.0070_MARGARETHA JANUASNI J.M_BAB II.pdf Restricted to Registered users only Download (1MB)
	Text 20.B1.0070_MARGARETHA JANUASNI J.M_BAB III.pdf Restricted to Registered users only Download (1MB)
	Text 20.B1.0070_MARGARETHA JANUASNI J.M_BAB IV.pdf Restricted to Registered users only Download (1MB)
	Text 20.B1.0070_MARGARETHA JANUASNI J.M_BAB V.pdf Restricted to Registered users only Download (619kB)
Preview	Text 20.B1.0070_MARGARETHA JANUASNI J.M_DAPUS.pdf Download (620kB) | Preview
	Text 20.B1.0070_MARGARETHA JANUASNI J.M_LAMP.pdf Restricted to Registered users only Download (2MB)

Abstract

Mudflow is a flow of fine-grained material transitioning from a solid phase to a plastic phase, which continues with increasing water content until it exceeds the liquid limit. When the water content surpasses the flow limit, the soil’s undrained shear strength becomes zero, as the soil exists in a suspended state. In this condition, the soil behaves as a viscous fluid. To determine the undrained shear strength (c u ), tests are conducted using the Fall Cone Penetrometer Test (FCT), Laboratory Miniature Vane Shear Test (VST), and Cylinder Strength Test (CST). The soil samples used were sourced from Cibenda Village, West Bandung Regency, and Kaolin was used as a reference. The results from the three testing methods showed a decreasing trend in undrained shear strength (c u ) with an increasing Liquidity Index (LI). In the FCT, the liquidity index ranged from LI = 1,63 to LI = 1,71, with undrained shear strength (c u ) values of 1,55 kN/m² to 1,70 kN/m² for the soil from Cibenda Village, while for Kaolin, LI ranged from 1,13 to 1,74, with c u values of 1,57 kN/m² to 3,57 kN/m². In the VST, the Cibenda Village soil exhibited an LI range from 1,63 to 2,03, with c u values of 0,46 kN/m² to 1,74 kN/m², while for Kaolin, LI ranged from 1,13 to 1,74, with c u values of 0,46 kN/m² to 2,38 kN/m². In the CST showed an LI range from 1,65 to 4,92, with c u values of 0,11 kN/m² to 0,59 kN/m² for the Cibenda Village soil, and for Kaolin, LI ranged from 1,09 to 5,39, with c u values of 0,11 kN/m² to 0,59 kN/m². The CST results for undrained shear strength (c u ) were up to 3 times higher compared to FCT and 2,6 times higher than VST. By extending the undrained shear strength (c u ) to zero using the CST, the flow limit was determined. The flow limit for both samples was obtained at approximately LI = 8,7, with a water content of 397,48 % for the Cibenda Village soil and 408,09% for Kaolin. This understanding is useful for establishing water content thresholds in classifying soil movements known as mudflow.

Actions (login required)

View Item