Palm trees are extensively cultivated in southern China,and the palm fibers extracted from the tree bark boast notable tensile strength and durability.Consequently,palm fibers have gradually found application in geotech-nical engineering in recent years to reinforce clay.To investigate its mechanical properties,damage patterns,and underlying constitutive relationships under stress,fibers measuring 6 mm,12 mm,and 18 mm in length were cho-sen and incorporated into clay at mass ratios of 0.2％,0.4％,0.6％,and 0.8％,respectively.Unconfined compres-sive strength tests on the palm fiber-reinforced clay revealed a significant increase in clay strength following the ad-dition of palm fibers.Optimal reinforcement was achieved by mixing 12 mm palm fibers into the clay at a 0.8％ratio,resulting in a 27％increase in strength compared to regular clay.Furthermore,the reinforced clay demonstra-ted exceptional damage tolerance and residual strength,prolonging the damage process.This was attributed to the formation of a three-dimensional soil network within the clay,which restricted soil particle slippage and enhanced clay integrity,ultimately leading to improved ductility.Furthermore,the uniaxial compressive stress-strain model for concrete was introduced to analyze the unconfined compressive strength test data.The results revealed a high degree of consistency between model results and test data.These research outcomes offer valuable insights for the utilization of palm fiber-reinforced clay in geotechnical engineering.
fiber-reinforced soilpalm fiberunconfined compressive strengthreinforcement mechanismconsti-tutive model
维普
万方数据
