Effect of Sand Addition on Laterite Soil Stabilization
Author Information
Author(s): Bárbara Drumond Almeida, Lisley Madeira Coelho, Antônio Carlos Rodrigues Guimarães, Sergio Neves Monteiro
Primary Institution: Military Institute of Engineering-IME, Brazil
Hypothesis
Does adding 20% sand improve the mechanical properties of lateritic soil?
Conclusion
Adding sand did not significantly improve the mechanical performance of lateritic soil, with pure laterite showing better properties for pavement applications.
Supporting Evidence
- The laterite-sand mixture had a lower resilient modulus than pure laterite.
- The addition of sand resulted in nearly twice the plastic strain compared to pure laterite.
- Pure laterite exhibited a more stable performance under repeated loading.
Takeaway
This study looked at how adding sand to laterite soil affects its strength. It found that pure laterite is actually better for building roads than when sand is added.
Methodology
The study used repeated load triaxial tests to assess the mechanical properties of lateritic soil with and without sand.
Limitations
The study focused on only two samples and may not represent all lateritic soils.
Digital Object Identifier (DOI)
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