# The Effect of Different Mixtures on Desiccation Crack Behaviour and Hydraulic Stability of a Compacted Liner
> Budihardjo M.A.

URL kanonis: https://discover.unhas.ac.id/publications/pub_scopus_105049091112
Jurnal / Konferensi: Nature Environment and Pollution Technology
Tahun terbit: 2026
DOI: https://doi.org/10.46488/NEPT.2026.v25i03.D1898
ISSN: 09726268
Kuartil SJR: Q3
Citations: 0

## Authors
- Budihardjo M.A.

## Abstract
Landfills utilize leachate containment systems featuring a compacted liner layer with low hydraulic conductivity. Typically, the required hydraulic conductivity is ≤ 1 × 10⁻⁵ cm.s-1 for final cover liners and ≤ 1 × 10⁻⁶ cm/s for bottom liners, to prevent leachate from migrating into surrounding soil and groundwater. This study tested composites made from textileindustry sludge amended with bentonite, lime, and rice husk ash to assess their potential as landfill liner materials. Results indicated that composites with 40% or more bentonite (by mass) mixed with dewatered sludge could meet permeability standards. The addition of 1% lime and 8% rice husk ash further reduced permeability. Incorporating bentonite increased cohesion and lowered the internal friction angle, while lime and rice husk ash raised the internal friction angle and caused fluctuations in cohesion.

## Keywords
- Hydraulic conductivity
- Leachate
- Husk
- Lime
- Bentonite
- Geotechnical engineering
- Cohesion (chemistry)
- Permeability (electromagnetism)
- Environmental science
- Materials science
- Bottom ash
- Waste management
- Friction angle
- Infiltration (HVAC)
- Desiccation
- Water retention
- Slurry
- Geosynthetic clay liner
- Composite material
- Water content
- Internal friction
- Porosity

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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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