In order to study the permanent deformation of large-size graded aggregates under cyclic repeated loads,cy-clic compaction tests were carried out on large-size graded aggregates to investigate the effects of moisture content,grada-tion and repeated loads on the cumulative deformation of large-size graded aggregates,and grey correlation theory was in-troduced to calculate the grey correlation degree of the factors to determine the degree of influence of each factor on the permanent deformation.The test results show that:when the load is lower than 200 kPa,the large-grained graded gravel mix is in the state of plastic stability,and when the load is 250～300 kPa,the deformation of the specimen will be accumu-lated slowly,and the specimen is in the state of plastic creep;according to the results of grey correlation analysis,the per-manent deformation of large-grained graded gravel mix is most affected by the gradation,followed by the compaction load and water content;Finally,based on the experimental results,a more applicable cumulative deformation prediction model for large-size graded crushed stone is proposed.
large-size graded crushed stonepermanent deformationgrey correlation analysismodel predic-tionroad base pavement
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