Mechanical Properties of Glass-Fiber Improved Red Clay in the Mountainous Area of Western Zhejiang
The study aims to solve the engineering geological disasters,such as uneven settlement and landslides,caused by the high liquid limit red clay in the western Zhejiang.In this paper,glass fiber reinforcement technology is used to improve red clay.Through the direct shear test and unconfined compression test,the mechanical properties of red clay with glass fibers of varying lengths and dosages are studied,and the evolution rule of mechanical properties indexes is analyzed.The experimental results show that the addition of glass fibers in red clay has improved significantly the shear strength of the soil,and that its cohesion is 1.68～2.22 times higher than that of plain soil.Its cohesion increases first and then decreases with an increase in the amount and length of glass fibers.The unconfined compressive strength of glass fiber red clay is 1.47～1.95 times higher than that of plain soil,increasing with the dosage and length of glass fibers.By analyzing the stress-strain curve,it is found that the peak stress of plain soil is between 2.5％and 3.0％,while that of fibrous soil is between 3.5％and 4.5％,indicating that the addition of glass fibers has improved the residual strength of the soil.The improved fibrous soil can meet the roadability requirements.The study provides reference for fiber reinforced soil treatment.
glass-fiber red clayshear strengthunconfined compressive strengthstress-strain relationshippeak stress
万方数据
维普
