Study On The Intervention Influence Of Fine Aggregate On The Skeleton Of Asphalt Mixture

The asphalt mixture with skeleton dense structure is becoming the most cardinal asphalt mixture because of its good pavement performance.In this thesis, the intervention characteristic of fine aggregate to the skeleton of asphalt mixture is deep discussed and researched. Firstly, under the condition of coarse aggregate gradation selected in the thesis, the gradation of fine aggregate which just does not intervene the skeleton of asphalt mixture is researched; we compare the result under the condition that only grainy intervention is happens with the result under the condition that grainy intervention and intervention of filler bitumen are happen, we conclude that 1.18mm is the most sensitive one. Secondly, we reseach the sensitivity of intervention, and find the regularity of grainy intervention and intervention of filler bitumen which result from the increase of fine aggregate with size of 1.18mm. Last but not least, we discuss the relevance of intervention coefficient which indicate the level of intervention and high-temperature stability, and conclude that the relevance of intervention coefficient and Marshall Stability is bad, while the relevance of intervention coefficient and DS is good, so we fit the date of intervention coefficient and DS.