In order to enhance the seismic performance of transportation infrastructure and prolong the service life of structures,the arti-cle mixes rubber particles with different particle sizes and polypropylene fibres in the foam light soil structure,and investigates the key factors affecting its flexural and impact strength through experiments,and analyses the durability of polypropylene fibre-modified rub-ber foam light soil materials under the influencing factors of different rubber particle sizes,rubber mixing amounts,wet density,fibre mixing amounts,and so on,the study shows that:doping rubber particles adversely affects the flexural strength of the specimen,but can effectively improve the impact resistance of the specimen,but when the project on the strength of the material requirements of high,should control the rubber particles blending ratio of no more than 15%;fibre doping and specimen wet density can effectively improve the specimen's flexural and impact strength,and fibre doping is mainly to slow down the development of the specimen cracks;polypro-pylene fibre-modified rubber foam light soil compared to the unadulterated foam light soil,flexural and impact properties have been effectively improved.The flexural and impact resistance of polypropylene fibre-modified rubber foam light soil is effectively improved.
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