This study investigates soil stabilization through two soil strengthening techniques, specifically; Bio-cementation through Microbial induced calcite precipitation (MICP) and Bio-polymerization using Xanthan gum for aeolian erosion control applications. The performances of these techniques were evaluated in terms of improvement in Threshold friction velocity (TFV), soil mass loss (%), and soil crust thickness formed with different levels of the treatment by conducting a series of experiments in the laboratory-scale wind tunnel and the microstructural observations with the help of FESEM and X-ray diffraction techniques. The results from wind erosion studies exhibited an improvement in TFV from 20 km/h for untreated to 45 km/h for MICP and biopolymer treated sand. A reduction in the soil mass loss from 75.23% for untreated to as least as 0% with both MICP and biopolymer treatment was observed. The results also indicated that the concentration of urea-cacl₂ and biopolymer both played a critical role in soil improvement in both treatment methods. In MICP treated soil, the maximum wind speed of 45 km/h was encountered as TFV with 0.5M urea-cacl₂. Whereas the TFV of biopolymer treated soil encountered the maximum wind speed of 45 km/h with a minimum of 0.25% of Xanthan Gum biopolymer solution.

本研究通过两种土壤强化技术来研究土壤的稳定性。通过微生物诱发的方解石沉淀（MICP）进行生物固结，并使用黄原胶进行生物聚合，以控制风蚀。通过在实验室规模的风洞中进行一系列实验，通过不同处理水平形成的阈值摩擦速度（TFV），土壤质量损失（％）和土壤结皮厚度的改善，评估了这些技术的性能。借助FESEM和X射线衍射技术进行显微组织观察。风蚀研究的结果表明，TFV从未经处理的20 km / h提高到MICP和经过生物聚合物处理的砂子的45 km / h。土壤质量损失从75降低。观察到未处理的23％到MICP和生物聚合物处理的至少0％。结果还表明尿素钙的浓度₂和生物聚合物在两种处理方法中均对土壤改良起着关键作用。在经过MICP处理的土壤中，使用0.5M尿素钙₂的TFV遇到的最大风速为45 km / h 。生物聚合物处理过的土壤的TFV遇到最大风速为45 km / h，而黄原胶生物聚合物溶液的最小风速为0.25％。