Marble Powder as a Soil Stabilizer: An Experimental Investigation of the Geotechnical Properties and Unconfined Compressive Strength Analysis
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View abstract on PubMed
Summary
This summary is machine-generated.Waste marble powder effectively stabilizes fine-grained clayey soils, significantly improving geotechnical properties like California Bearing Ratio (CBR) and Unconfined Compressive Strength (UCS). This sustainable approach enhances weak soils for construction applications.
Area Of Science
- Geotechnical Engineering
- Materials Science
- Environmental Engineering
Background
- Fine-grained soils pose significant engineering challenges due to their poor mechanical properties.
- Soil stabilization using alternative binders is crucial for sustainable construction practices.
- Waste marble powder offers a promising, eco-friendly alternative binder for soil improvement.
Purpose Of The Study
- To investigate the efficacy of waste marble powder as a binder for stabilizing fine-grained clayey soils.
- To evaluate the temporal evolution of Unconfined Compressive Strength (UCS) and key geotechnical properties.
- To determine the optimal conditions (curing time, water content, composition) for soil stabilization.
Main Methods
- Laboratory experiments were conducted to assess Atterberg's limits, compaction, California Bearing Ratio (CBR), Indirect Tensile Strength (ITS), and UCS.
- Exploratory Data Analysis (EDA) and statistical modeling were employed to analyze the influence of various factors on UCS.
- Soil-marble powder mixtures were tested under different curing times, molding water contents, and composition ratios.
Main Results
- California Bearing Ratio (CBR) increased significantly, reaching 22.94% (unsoaked) and 12.46% (soaked) with 60% marble powder.
- Indirect Tensile Strength (ITS) improved from 100 to 208 kN/m² with 60-75% marble powder.
- Unconfined Compressive Strength (UCS) rose from 170 to 661 kN/m² after 28 days, with optimal results at 22.5% molding water content and 60% marble powder.
Conclusions
- Waste marble powder is a sustainable and cost-effective binder for improving the engineering properties of fine-grained soils.
- Stabilized soils exhibit enhanced strength and durability, making them suitable for construction.
- This research promotes the utilization of industrial waste for transforming problematic soils into valuable construction materials.
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