Based On The Rheological Theory Research Of Asphalt Mixture Segregation

Since reform and opening, the rapid development of highway construction, but in recent years, highway due to the formation of the early failure of segregation is very serious, to bring great loss to our country. Our many researchers in highway roads segregation problem, also made a lot of achievements. Based on rheological theory, the construction of asphalt mixture produced various stages of segregation was studied.In this paper the rheological characteristics of asphalt mixture, and based on the rheological properties of asphalt mixture with properties research, analysis to control the asphalt mixture to control the rheological properties of asphalt mixture of segregation. Control the segregation of asphalt mixture, that control of hot-mix asphalt segregation from raw materials to quality control to asphalt mixture compaction molding process of each control.Analysis construction working procedure to bituminous mixture segregation influence; this chapter from the aggregate production, the blend agitation, the transportation, spreads paving, the roller compaction and so on embarks, proposes the elimination and the reduced temperature segregation and the pellet segregation measure; focus on the asphalt mixing station of segregation; anti-segregation on the mixing plant was set parameters, structural improvement, and propose an effective device to reduce the fabric's grain segregation during discharge.This article key is the segregation phenomenon which possibly appears to the paver each spot construction in conducts the research; the introduction hydromechanics viewpoint carries on the mathematical analysis to the scraper conveyor and establish the scraper conveyor segregation speed restraint mathematical model. Spiral case of scraper conveyor with the transmission speed matching parameters,namely the spiral stock distributing gear and the scraper conveyor parameter true rule another parameter also may determine and by scraper conveyor feeding when segregates the speed restraint mathematical model has obtained the spiral stock distributing gear segregation speed restraint model, from this the model may very good prevent the segregation which because the spiral stock distributing gear speed reason creates. May from spread paving own design parameter regarding the paver pre-compaction segregation to embark, seeks the best parameter of movement, the structure size and so on, then carries on the pre-compaction segregation again in the construction craft the prevention.