Experimental dataset for interface-engineered glass fibers reinforced cement-metakaolin-stabilized silty clay

This dataset contains the standardized experimental data generated and analyzed in the study “Interface engineered glass fibers improve performance and durability of stabilized silty clay”. The dataset includes raw and processed data for the basic index properties of silty clay, standard compaction behavior, fiber tensile performance, cement–metakaolin mix optimization, cost-effectiveness analysis, unconfined compressive strength, direct shear strength, permeability, freeze–thaw durability, mass loss, X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), mercury intrusion porosimetry (MIP), scanning electron microscopy (SEM), and related figure files.These data support the assessment of mechanical performance, permeability resistance, freeze–thaw durability, and microstructural/interfacial mechanisms of cement–metakaolin-stabilized silty clay reinforced with modified glass fibers and nano-TiO2-reinforced glass fibers. The dataset is made publicly available to support transparency, reproducibility, and reuse of the experimental results.