Waste soil produced from construction sites currently emerges as a big problem to environment. These soils cannot be reused directly cause of its weakness in strength properties. Hence, this study focuses on improving mechanical properties of waste soil by using cement and corn husk fiber. The environment has also benefited from using corn husk fiber since corn husk is agricultural by-product. In order to evaluate the impact of corn husk fiber and cement on mechanical characteristics of waste soil, a series of laboratory experiments containing tension and compression test is carried out. In addition, scanning electron microscopy (SEM) test is conducted to investigate interaction between fibers and soil-cement matrix. Fiber content from 0 to 1% by dry soil mass and corn husk lengths of 10 and 30 mm are used in this research. The results present that strength properties of cemented soil are enhanced when fiber is added. The most improvements corresponding to compressive strength, splitting tensile strength, and direct tensile strength are 30.6%, 206.1%, and 27.9%, respectively. A strong interaction between fibers and soil-cement matrix observed from SEM results in the improvement of strength properties of cemented soil. Fiber inclusion contributes to the more ductile and durable behavior under loading. Fiber length and fiber content have a remarkable effect on the cemented soil behavior. The increase in fiber length and content leads to the increase in residual stress and the decrease in loss of post-peak stress.

建筑工地产生的废土目前已成为环境的一大问题。由于其强度性能较弱，这些土壤不能直接重复使用。因此，本研究的重点是利用水泥和玉米壳纤维改善废弃土壤的力学性能。由于玉米壳是农业副产品，因此使用玉米壳纤维也使环境受益。为了评估玉米壳纤维和水泥对废土力学特性的影响，进行了一系列包含拉伸和压缩试验的实验室实验。完成了。此外，还进行了扫描电子显微镜 (SEM) 测试，以研究纤维与土壤-水泥基质之间的相互作用。本研究使用 0 至 1% 的干土质量的纤维含量和 10 和 30 毫米的玉米壳长度。结果表明，添加纤维后，水泥土的强度性能得到了提高。抗压强度、劈裂抗拉强度对应的改进最多，直接拉伸强度分别为 30.6%、206.1% 和 27.9%。从 SEM 观察到纤维和土壤-水泥基质之间的强相互作用导致水泥土强度性能的提高。纤维夹杂物有助于在负载下更具延展性和耐用性。纤维长度和纤维含量对胶结土行为有显着影响。纤维长度和含量的增加导致残余应力的增加和峰后应力损失的减少。