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Energy Consumption and Erosion Mechanism of Polyester Fiber Reinforced Cement Composite in wind-blown sand environments

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Journal of Wuhan University of Technology(Materials Science) 2022年第4期37卷 666-676页

作者： HAO Yunhong LIU Yanchen LI Yonggui GAO Feng School of Science Inner Mongolia University of TechnologyHohhot 010051China The Inner Mongolia Key Laboratory of Civil Engineering Structure and Mechanics Fuzhou 350108China The Inner Mongolia Autonomous Region Construction Inspection and Appraisal and Safety Assessment Engineering Technology Research Center Hohhot 010051China Fujian Key Laboratory of Novel Functional Textile Fibers and Materials Minjiang UniversityHohhot 010051China School of Civil Engineering Inner Mongolia University of TechnologyHohhot 010051China

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 *** 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 *** on the actual conditions of sandstorms in Inner Mongolia,the sand erosion parameters required for testing were calculated by the similarity *** 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 *** 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 *** 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.

关键词： wind-blown sand environment erosion resistance polyester fibre-reinforced cement composite energy consumption mechanism erosion mechanism

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