In this study, the mechanical properties of untreated and chemically treated materials were analyzed, focusing on tensile strength, Young’s modulus, and elongation at break. A range of alkali treatments (1%, 2%, 5%, 10%, and 15% alkali) were compared to untreated samples, as well as samples treated with alkali-silane. The results revealed that moderate alkali treatment significantly enhances tensile strength, reaching a maximum at 2% alkali concentration, while higher alkali concentrations result in a gradual decline. The alkali-silane treated samples demonstrated superior tensile properties, with the highest tensile strength and improved elongation at break, indicating enhanced ductility. The study highlights the critical role of chemical treatment in optimizing mechanical properties, with alkali-silane treatment offering the most substantial improvements in both tensile strength and elongation at break.