This study delves into the efficacy of employing fly ash (FA) and sisal fibers (SF) as additives for soil stabilization, with a focus on the inherently fragile expansive soil found in the Sirsa, Haryana, region. Given the pressing need for stable soil in construction endeavors, the research examines both mechanical and chemical stabilization techniques. Through a series of experimental methods such as the California Bearing Ratio (CBR) test and Proctor compaction test, the study evaluates the impact of these additives on soil properties. Results reveal that the incorporation of FA leads to notable enhancements in both maximum dry density (MDD) and CBR value, whereas the introduction of SF, serving as a tensional reinforcement, decreases MDD while significantly augmenting CBR value, thus showcasing its potential for soil improvement.
                                
                                
                                    
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