Effects of Wetting–Drying Cycles on the Macro and Micro Properties of the Cement-Stabilized Soil with Curing Agent
Abstract
:1. Introduction
- The macro and micro characteristics of solidified cement-stabilized soil under wetting–drying cycles were studied;
- Adding a curing agent can improve the resistance to wetting–drying cycles of cement-stabilized soil;
- The addition of a curing agent can enhance the content of hydration products in cement-stabilized soil.
2. Test Materials and Methods
2.1. Test Materials
2.2. Test Method
3. Mechanical Properties of Stabilized Soil at Different Ages after Wetting–Drying Cycles
3.1. 7 d Curing Age
3.2. 28 d Curing Age
4. Mechanical Properties of Stabilized Soil at Different Ages after Wetting–Drying Cycles
4.1. XRD Analysis
4.2. SEM Analysis
4.2.1. Surface Porosity P
4.2.2. Pore Diameter d
4.2.3. Pore Abundance
4.2.4. Fractal Dimension
4.2.5. Pore Orientation Angle
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
Nomenclature
XRD | X-ray Diffraction |
SEM | Scanning Election Microscopy |
UCS | Unconfined Compressive Strength |
d | day |
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Natural Moisture (%) | PH | Coefficient of Curvature Cc | Coefficient of Nonuniformity Cu | Optimum Moisture (%) | Maximum Dry Density (g/cm3) | Soil Sample (d < 0.5 mm) | ||
---|---|---|---|---|---|---|---|---|
Liquid Limit (%) | Plastic Limit (%) | Plasticity Index (%) | ||||||
3.9 | 8.17 | 1.0 | 6.875 | 12.19 | 1.9509 | 42.3 | 24.6 | 17.7 |
Specific Surface Area (m2/Kg) | Initial Setting Time (min) | Final Setting Time (min) | Stability | 3D Bending Strength (MPa) | 3D Compressive Strength (MPa) |
---|---|---|---|---|---|
381 | 115 | 184 | Eligible | 6.2 | 33.8 |
No. | Dosage of Curing Agent (%) | Cement Content (%) | Wetting–Drying Cycles | Microscopic Testing | |
---|---|---|---|---|---|
Curing Age (d) | Number of Cycles | ||||
S6,0.04 | 0.04 | 6 | 7, 28 | 0, 1, 3, 5, 7, 9 | / |
S8,0.04 | 0.04 | 8 | 7, 28 | 0, 1, 3, 5, 7, 9 | / |
S10,0.04 | 0.04 | 10 | 7, 28 | 0, 1, 3, 5, 7, 9 | XRD, SEM |
S10 | 0 | 10 | 7. 28 | 0, 1, 3, 5, 7, 9 | XRD |
S12 | 0 | 12 | 7, 28 | 0, 1, 3, 5, 7, 9 | / |
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Hu, W.; Li, K.; Yin, W.; Zhang, H.; Xue, Y.; Han, Y.; Liu, P. Effects of Wetting–Drying Cycles on the Macro and Micro Properties of the Cement-Stabilized Soil with Curing Agent. Buildings 2024, 14, 1716. https://doi.org/10.3390/buildings14061716
Hu W, Li K, Yin W, Zhang H, Xue Y, Han Y, Liu P. Effects of Wetting–Drying Cycles on the Macro and Micro Properties of the Cement-Stabilized Soil with Curing Agent. Buildings. 2024; 14(6):1716. https://doi.org/10.3390/buildings14061716
Chicago/Turabian StyleHu, Wenjun, Kun Li, Wenhao Yin, Han Zhang, Yi Xue, Yutong Han, and Pingyun Liu. 2024. "Effects of Wetting–Drying Cycles on the Macro and Micro Properties of the Cement-Stabilized Soil with Curing Agent" Buildings 14, no. 6: 1716. https://doi.org/10.3390/buildings14061716