Effect of Cow Bone Ash on a Stabilized Lateritic Soil for Road Work
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Date
2026
Journal Title
Journal ISSN
Volume Title
Publisher
Neewaj Journal of Multidiciplinary Research and Innovations
Abstract
This research investigates the potential of cow bone ash (CBA) as a stabilizer for lateritic soil,
aiming to improve its geotechnical properties for road construction and mitigate environmental
pollution from bone waste disposal. Lateritic soil samples were collected from Peke Airport
Road and stabilized with varying percentages of CBA (0%, 2%, 4%, 6%, 8%, and 10%).
Standard laboratory tests, including specific gravity, particle size distribution, Atterberg limits,
compaction, and California Bearing Ratio (CBR), were conducted according to British Standards
(BS 1377: 1990 and BS 1924: 1990). demonstrating improved geotechnical properties such as
increased unsoaked and soaked CBR values (from 51.0% to 57.0% with 10% CBA), reduced
Atterberg limits (LL decreased from 44.5% to 30.0% with 10% CBA), and enhanced compaction
characteristics (MDD increased from 1660 kg/m³ to 1770 kg/m³ with 10% CBA), while also
considering the trade-off of increased optimum moisture content (OMC) from 12.0% to 17.5%
with increasing CBA content, necessitating further analysis to determine the optimal CBA
percentage for optimal stabilization.
Keywords: Cow Bone Ash, Lateritic Soil, Geotechnical Tests, Road Stabilization, Road Work