Considering the economic and environmental benefits associated with the recycling of polyester (PET) fibres, it is vital to study the application of fibre-reinforced cement composites. According to the characteristics of the wind-blown sand environment in Inner Mongolia, the erosion resistance of the polyester fibre-reinforced cement composites (PETFRCC) with different PET fibre contents to various erosion angles, velocities and sand particle flows was investigated by the gas-blast method. Based on the actual conditions of sandstorms in Inner Mongolia, the sand erosion parameters required for testing were calculated by the similarity theory. The elastic-plastic model and rigid plastic model of PETFRCC and cement mortar were established, and the energy consumption mechanism of the model under particle impact was analyzed. The experimental results indicate that the microstructure of PETFRCC rafter hydration causes a spring-like buffering effect, and the deformation of PETFRCC under the same impact load is slightly smaller than that of cement mortar, and the damage mechanism of PETFRCC is mainly characterized by fiber deformation and slight brittle spalling of matrix. And under the most unfavorable conditions of the erosion, the erosion rate of 0.5PETFRCC is about 57.69％ lower than that of cement mortar, showing better erosion resistance.

School of Science,Inner Mongolia University of Technology,Hohhot 010051,China;The Inner Mongolia Key Laboratory of Civil Engineering Struc-ture and Mechanics,Hohhot 010051,China;The Inner Mongolia Autonomous Region Construction Inspection and Appraisal and Safety Assessment Engineering Technology Research Center,Hohhot 010051,China;Fujian Key Laboratory of Novel Functional Tex-tile Fibers and Materials,Minjiang University,Fuzhou 350108,China;School of Civil Engineering,Inner Mongolia University of Technology,Hohhot 010051,China

[1]HAO Yunhong;LIU Yanchen;LI Yonggui;GAO Feng-.Energy Consumption and Erosion Mechanism of Polyester Fiber Reinforced Cement Composite in Wind-blown Sand Environments)[J].武汉理工大学学报（材料科学版）（英文版）,2022(04):666-676

PETFRCC,rafter,5PETFRCC

Energy,Consumption,Erosion,Mechanism,Polyester,Fiber,Reinforced,Cement,Composite,Wind,blown,Sand,Environments,Considering,economic,environmental,benefits,associated,recycling,polyester,fibres,vital,study,application,reinforced,cement,composites,According,characteristics,wind,Inner,Mongolia,erosion,resistance,different,contents,various,angles,velocities,particle,flows,was,investigated,by,gas,blast,method,Based,actual,conditions,sandstorms,parameters,required,testing,were,calculated,similarity,theory,elastic,plastic,model,rigid,mortar,established,energy,consumption,mechanism,under,impact,analyzed,experimental,results,indicate,that,microstructure,hydration,causes,spring,like,buffering,effect,deformation,same,load,slightly,smaller,than,damage,mainly,characterized,fiber,brittle,spalling,matrix,And,most,unfavorable,rate,about,lower,showing,better

0.540056