Cracking Resistance Performance of Palm Fiber Reinforced Clay Anti-seepage Layers under Dry-Wet Cycles
HU Dianjun
LIU Jin
MA Xiaofan
WANG Jingyi
WU Yuhan
Abstract：To prevent cracking in clay anti-seepage layers,which poses a threat to engineering safety,palm fibers were added to improve the cracking resistance of clay.Evaporation cracking tests were conducted under dry-wet cycles.The cracking characteristics,failure mechanism and microscopic mechanism of the modified clay with different reinforcement ratios(0%,0.2%,0.4%,0.6%,0.8%)were systematically investigated.The results show that the increase of dry-wet cycles can significantly accelerate water evaporation.Palm fibers effectively slow down water evaporation and decrease water content.When the reinforcement ratio increases from 0.2%to 0.8%,the effect of suppressing water evaporation does not improve significantly.Palm fibers can significantly decrease the cracking width of clay and promote the formation of fine cracks,leading to improved soil stability.The water content and cracking characteristics of clay are mainly influenced by the dry-wet cycles,and the reinforcement ratio has a significant impact on the change amplitude,but little impact on the change trend.
Keywords：anti-seepage layerreinforced claydry-wet cyclecrack networkmicroscopic mechanism
Publication Date：2025-11-30
Online Publishing Date：2025-12-09(First online date of this platform, not the publication date of the document)
Pages：7( 1086-1092 )