Road Properties of Cement-Phosphogypsum-Red Clay Under Dry and Wet Cycles
Author Information
Author(s): Liu Yunke, Chen Kaisheng, Jian Hao, Liu Zeyu
Primary Institution: School of Civil Engineering, Guizhou University, Guiyang, Guizhou Province, China
Hypothesis
The study investigates the road performance of cement-phosphogypsum-red clay mixtures under dry and wet cycling conditions.
Conclusion
Cement-phosphogypsum-red clay can be effectively used as a roadbed filler, meeting the necessary strength and stability requirements.
Supporting Evidence
- The unconfined compressive strength of the mixture decreases with the number of wet and dry cycles.
- The CBR value meets the requirements for roadbed fill on highways.
- SCA-2 water stabilizer improves the water stability performance of the mixture.
Takeaway
This study shows that mixing cement with phosphogypsum and red clay can make better road materials that are strong and stable, even when wet and dry cycles happen.
Methodology
The study used unconfined compressive strength tests, California bearing ratio tests, and water stability tests to evaluate the performance of the mixtures.
Limitations
The study primarily focuses on short-term performance and does not assess long-term durability beyond five wet and dry cycles.
Digital Object Identifier (DOI)
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