Effect of Production Fluctuations on the Performance of EMC-10 Ultra-thin Abrasion Layers
Based on EMC-10 ultra-thin wear layer,the particle sizes of 4.75 mm,2.36 mm and 0.075 mm were set to fluctuate in different degrees within the grading range.The ultra-thin wear layer spec-imens were molded and the volume index,water permeability coefficient,structural depth and split-ting strength of the mixture were tested.Then the relationship between the pass rate of key sieve holes and the performance of the mixture was analyzed.Based on the characteristics of mixture filling and interference,the structural parameters of asphalt mixture were put forward,and the correlation between structural parameters and road performance was studied by using grey correlation method.The results show that there is no obvious difference in the volume index between the thin-layer speci-men and the standard specimen,and the fluctuation in the gradation range during the production of ul-tra-thin wear layer can easily lead to the increase of the water permeability coefficient of the mixture.The main factors affecting the porosity,structural depth and splitting strength of ultra-thin wear layer are the fluctuation of(4.75～9.5)mm content and the change of asphalt film and asphalt paste film thickness.The change of particle size content of(2.36～4.75)mm is the main factor affecting the wa-ter permeability coefficient.
万方数据
维普
