Research On Dynamic Modulus Of Asphalt Treated Base

Pavement structure actually is acted from the vehicle, climate, and cultural factors in the evolving role,the actual working condition, whether mechanical model and the nature of the material have a considerable gap with the existing static mechanical system. On the road from the international design development, pavement design is an inevitable trend from static to dynamic changes in the way road design theory.It is the foundation that pavement materials dynamic modulus replace static modulus, and that is the first step. So that are very necessary and meaningful that we study the nature of asphalt mixture under dynamic loads and changes law of it,that determine its test methods and test their model value.Asphalt Treated Base has been developed from 1950s.American studied ATB from 1960s. Asphalt pavement structure on asphalt treat base has been the main pavement structure in USA from 1970s.But in our country , Asphalt Pavement Structure on Semi-rigid Base was the main pavement structure,ATB has been only used in jing-jin-tang high way and few experiment sections.More and more proplem has been found in semi-rigid base,people want to look for a new pavment structure.In this situation,ATB has been attentioned.Based on the survey to find out many domestic and foreign asphalt mixture dynamic modulus test,in this paper ,we study compressive strength,stadic moduls,dynamic modulus of asphalt treated base mixtures with wide applicating foreground in our country. a set of suits the dynamic modulus of experimental methods are put forward, and the feasibility of the law, influencing factors (stress level, loading frequency, temperature, etc.) are analyzed and studied of the system. At last,according to analyzing the results, we put forward the relationship of asphalt mixture of dynamic modulus between asphalt mixture of static modulus of the regression formula and various asphalt mixture for dynamic modulus of value. At last ,we detemined the maste r curve of dynamic modulus and time-temperature conversion factor in the representative temperature based on the time-tempe rapture equivalence principle.