Multi-parameter coupling effects of root reinforcement on disintegration and swelling behavior of expansive soil: A response surface methodology approach
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View abstract on PubMed
Summary
This summary is machine-generated.Root reinforcement significantly improves expansive soil stability by reducing disintegration and swelling. Optimal conditions involve composite root distribution with high density and large diameter for effective eco-engineering slope stabilization.
Area Of Science
- Geotechnical Engineering
- Soil Science
- Biogeomechanics
Background
- Expansive soils pose significant challenges in civil engineering due to their volume change behavior.
- Root reinforcement is a promising eco-friendly method for stabilizing problematic soils.
Purpose Of The Study
- To investigate the multi-parameter coupling effects of root reinforcement on the hydro-mechanical behavior of expansive soils.
- To optimize root characteristics (diameter, length, quantity, distribution) for enhanced soil stabilization.
Main Methods
- Response surface methodology (RSM) integrated with a hybrid Box-Behnken and D-optimal experimental design.
- Systematic investigation of root diameter, length, quantity, and distribution patterns.
- Quantitative assessment of disintegration amount (DA), swelling force (SF), and swelling rate (SR).
Main Results
- Root diameter and quantity were dominant factors controlling soil disintegration.
- Synergistic interaction between root diameter and length enhanced stabilization via mechanical interlocking.
- Composite root distribution significantly reduced disintegration and swelling compared to horizontal or inclined patterns.
- Optimized parameters (5mm diameter, 5 roots) predicted minimal disintegration (5.6g) and swelling rate (3.8%).
Conclusions
- Composite-root systems with high density and large diameter are optimal for stabilizing expansive soils.
- Root morphology-driven synergy provides a quantitative framework for eco-engineering slope stabilization.
- Understanding root-soil interactions is crucial for developing effective and sustainable geotechnical solutions.
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