Influence of Synthetic Fiber Additives on Soil Properties: An Analytical Investigation Based on Experimental Data

The improvement of soil performance using synthetic fiber reinforcement is a growing area of interest in geotechnical engineering. This study presents an experimental evaluation of the effects of synthetic PVA fiber additives on the mechanical, chemical, and microstructural properties of soil. A comprehensive dataset was utilized, including unconfined compressive strength (UCS) with a range of 160–430 kPa, split tensile strength (STS) with a range of 72–80 kPa, stress–strain behavior, disintegration rate, particle size distribution, pH with a range of 7.11–7.24, electrical conductivity (EC) of 4696, calcium carbonate (CaCO ₃ ) content with a range of 11.45–13.67, and exchangeable sodium percentage (ESP) with a range of 3.81–5.2. Spectral data from energy dispersive x‐ray spectroscopy (EDS) and x‐ray diffraction (XRD) were analyzed to identify compositional and mineralogical changes resulting from fiber inclusion. The analysis revealed substantial improvements in mechanical strength and chemical stability, accompanied by observable microstructural enhancements. MATLAB‐based statistical and graphical analyses enabled a detailed correlation between fiber dosage, curing age, and soil behavior. The results indicate that synthetic fiber additives, when combined with MICP treatment, significantly improve soil properties relevant to engineering applications. Because the underlying measurements were adopted from a previously published dataset, the present contribution lies in the independent cleaning, restructuring, and unified MATLAB‐based reanalysis—curve fitting, regression, and cross‐parameter correlation—rather than in new laboratory testing. Disintegration index versus time, in minutes, increased with time depending on MICP. Although further field‐scale validation is encouraged, the observed trends suggest strong potential for applications in road subgrades, embankments, and stabilized earthworks.