Dynamic response and pore evolution mechanism of composite improved loess using an eco-friendly curing agent and cement: a macroscopic and microscopic experimental study
Experimental study finds that a composite stabilization strategy significantly improves loess stability, suggesting an eco-friendly solution for construction.
Key Points
This study aims to enhance the stability of collapsible loess subgrades using an eco-friendly curing agent combined with Portland cement.
Conducted unconfined compressive strength tests and dynamic triaxial tests on composite-improved loess.
Applied scanning electron microscopy image processing alongside fractal theory for microstructural analysis.
Determined the optimal mix ratio of cement and eco-friendly curing agent using orthogonal design.
Achieved a 28-day unconfined compressive strength of 2.51 MPa, which is 483% higher than untreated loess.
Dynamic resilient modulus increased to 826.49 MPa under specified conditions, reflecting an 8.07-fold improvement.
Reduced pore fractal dimension from 1.323 to 1.249, indicating a shift from macropores to micropores.