International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 06 | Jun 2025
p-ISSN: 2395-0072
www.irjet.net
NANO-ADMIXTURE AND FIBRE-BASED STABILIZATION FOR SLOPE STABILITY IMPROVEMENT IN LOW-STRENGTH SILTY SOILS: A CASE STUDY FROM KANDRA KOTA PALLI SRIDHARAN KARTHIKEYA1, KONDALA RAMU2 1Post graduation Student, Department of Civil Engineering, University College of Engineering Kakinada(A), JNTUK,
Kakinada, Andhra Pradesh, India
2Professor of Civil Engineering Department, University College of Engineering Kakinada(A), JNTUK, Kakinada,
Andhra Pradesh, India -----------------------------------------------------------------------***-------------------------------------------------------------------These failures can lead to canal bed erosion, side slope Abstract - This research focuses on improving the slope
collapse, and damage to adjacent infrastructure such as roads or pipelines. In recent years, there has been growing interest in adopting modern soil improvement techniques to address these challenges effectively.
stability of an irrigation canal embankment at Kandra Kota, Andhra Pradesh, through soil stabilization techniques. The earlier untreated slope analysis revealed failure potential due to poor shear strength and high silt content. This extended study investigates the effect of nano-lime, nano-alumina, and polypropylene fibre on enhancing the shear strength parameters and factor of safety (FOS) of the same canal slope.
1.1 Case Site: Kandra Kota The case study area is located at Kandra Kota, Andhra Pradesh, where a road embankment adjacent to an irrigation canal experienced visible signs of instability. The embankment, with a height of 18 meters and side slope of 1V:1.5H, had previously shown distress due to poor soil strength, rainfall-induced erosion, and unprotected slopes. Earlier slope stability analysis conducted on the untreated soil revealed critically low FOS values, especially under submerged and sudden drawdown conditions.
Two stabilization mixes were prepared using varying percentages of nano additives and fibre. Laboratory tests such as Atterberg limits and direct shear were conducted to evaluate improvements in cohesion and internal friction angle. Slope stability analysis using HYRCAN software revealed that the stabilized soil showed significant FOS improvement under dry, submerged, and sudden drawdown conditions. Mix 2, with higher additive content, achieved the highest FOS across all cases. The results demonstrate that nano-material-based soil stabilization is an effective, eco-friendly, and practical approach for improving the stability of irrigation canal embankments, especially in silt-dominant soils prone to seepage and erosion.
This preliminary analysis and failure behaviour were documented and presented at the IYGEC 2025 conference. Based on the findings, it was evident that remedial measures were necessary to prevent further degradation and to restore the structural stability of the embankment
Key Words: Slope Stability, Nano Additives, Soil
1.2 Objective of the Present Study
Stabilization, HYRCAN, Factor of Safety, Embankment, Polypropylene Fiber, Cohesion
Canal
The current study focuses on the stabilization of the problematic embankment soil using a combination of nano-lime, nano-alumina, and polypropylene fibre. The primary objective is to evaluate the effectiveness of these additives in improving the shear strength characteristics of the soil and enhancing the overall stability of the canal slope. This research includes:
1.INTRODUCTION Irrigation canal embankments are frequently constructed on soft or silty soils, which are highly susceptible to failure due to seepage, rainfall infiltration, fluctuating water levels, and erosion. The safety and performance of such slopes depend significantly on the soil’s shear strength and the effectiveness of drainage and protection systems. In many canal projects across India, slope instability arises due to high silt content, expansive clay behaviour, and lack of adequate stabilization measures.
© 2025, IRJET
|
Impact Factor value: 8.315
|
Laboratory testing of stabilized Atterberg limits and shear strength
Application of HYRCAN software to analyse slope stability before and after treatment
ISO 9001:2008 Certified Journal
|
soil
for
Page 1201