Experimental Study on the Properties of Basalt Fiber–Cement-Stabilized Expansive Soil
Abstract
:1. Introduction
2. Test Materials and Methods
2.1. Test Materials
2.1.1. Expansive Soil
2.1.2. Basalt Fiber (BF) and Cement
2.2. Test Methods
2.2.1. Compaction Test
2.2.2. Swelling and Shrinkage Test
2.2.3. Unconfined Compressive Strength (UCS) Test
2.2.4. Undrained and Consolidation (CU) Shear Test
2.2.5. Dry–Wet Cycle Test
2.2.6. Scanning Electron Microscope (SEM) Test
3. Test Results and Analyses
3.1. Compaction Property
3.2. Swelling and Shrinkage Property
3.2.1. No Loading–Swelling Ratio
3.2.2. Shrinkage Ratio
3.3. Mechanical Properties
3.3.1. Unconfined Compressive Strength (UCS)
3.3.2. Partial Stress–Strain Curve
3.3.3. Shear Strength
3.3.4. Cohesion and Internal Friction Angle
3.4. Dry–Wet Cycle Durability
3.5. Microstructure
3.5.1. Microscopic Morphology and Mechanisms of BF Reinforcement
3.5.2. Microcosmic Mechanisms of Dry–Wet Cycle Deterioration
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Maximum Dry Density (g/cm3) | Specific Gravity | Liquid Limit/% | Plastic Limit/% | Plasticity Index | Sticky Grain Content/% | |
---|---|---|---|---|---|---|
<0.005 mm | <0.0025 mm | |||||
1.98 | 2.68 | 54.3 | 24.2 | 30.1 | 55.03 | 53.3 |
BF Length (mm) | Monofilament Diameter (μm) | Densities (g/cm3) | Modulus of Elasticity (GPa) | Tensile Strength (MPa) |
---|---|---|---|---|
6 | 7~15 | 2.64 | 90~110 | 3000~4800 |
Packing Density (g/m3) | Specific Surface Area (m2/kg) | Solidification Time (min) | Compressive Strength (GPa) | ||
---|---|---|---|---|---|
Initial Condensation | Final Condensation | 3 d | 28 d | ||
1.60 | 300 | 175 | 231 | 23.7 | 45.6 |
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Chen, J.; Mu, J.; Chen, A.; Long, Y.; Zhang, Y.; Zou, J. Experimental Study on the Properties of Basalt Fiber–Cement-Stabilized Expansive Soil. Sustainability 2024, 16, 7579. https://doi.org/10.3390/su16177579
Chen J, Mu J, Chen A, Long Y, Zhang Y, Zou J. Experimental Study on the Properties of Basalt Fiber–Cement-Stabilized Expansive Soil. Sustainability. 2024; 16(17):7579. https://doi.org/10.3390/su16177579
Chicago/Turabian StyleChen, Junhua, Jiejie Mu, Aijun Chen, Yao Long, Yanjiang Zhang, and Jinfeng Zou. 2024. "Experimental Study on the Properties of Basalt Fiber–Cement-Stabilized Expansive Soil" Sustainability 16, no. 17: 7579. https://doi.org/10.3390/su16177579