Effect of Basalt Fiber on Unconfined Compressive Strength of Cement Stabilized Clay, an Experimental Approach

This study explores the impact of basalt fiber reinforcement on the unconfined compressive strength (UCS) of cement-stabilized clay, aiming to enhance its suitability for geotechnical applications. A series of laboratory experiments were conducted to evaluate the effects of fiber content, cement dosage, and curing duration on mechanical performance. Scanning Electron Microscope (SEM) analysis examined the microstructural interactions within the fiber-matrix system, particularly focusing on crack resistance and interfacial bonding. The results indicate that incorporating 6 mm basalt fibers significantly improves UCS and ductility, with optimal performance observed at a fiber content of 1.2%. Extended curing periods further enhance strength by promoting cement hydration and fiber-matrix adhesion. SEM imaging confirmed reduced crack propagation and improved durability. These findings suggest that basalt fiber reinforcement is a promising method for strengthening cement-stabilized clay, making it suitable for applications such as road subgrades, slope stabilization, and embankment reinforcement.