Dissertation
Dissertation > Transportation > Road transport > Road works > Road construction materials

The Research of Asphalt Mixture Dynamic Modulus

Author SunJian
Tutor ChenZhongDa
School Chang'an University
Course Road and Railway Engineering
Keywords Asphalt mixture Dynamic modulus Repeated loading method Percussion vibration method Ultrasonic Falling weight deflectometer instrument GRUBBS Plastic deformation Random load
CLC U414
Type Master's thesis
Year 2007
Downloads 230
Quotes 2
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Actual stress state of the road surface and pavement design method , there is the difference between the model and parameters of dynamic and static , elastic and viscous , and pavement design system is an inevitable trend from static to dynamic . Therefore , the introduction of dynamic loads dynamic parameters and dynamic characteristics of the asphalt pavement structure is essential , therefore, the dynamic modulus of the asphalt mixture launched a study of the system . Firstly, both at home and abroad of indoor dynamic modulus test methods , including repeated loading method, percussion vibration method , ultrasonic method , from the physical and mechanical significance defined methods , test instruments and means to do a systematic comparative analysis . And repeated loading method as indoor dynamic modulus test method , this premise processing of the specimen , the determination of the test load and test other conditions parameters discourse and comparative study of the system , combined with the exploratory test data analysis , developed a data processing method of the test . Ultimately the formation of a system of dynamic modulus test methods . According to this method , the different types of asphalt mixes dynamic modulus test is conducted under different loading frequency , different load level bit different temperatures . Analyzes the influencing factors of dynamic modulus obtained relationship between static and dynamic modulus , comparative analysis and abroad, the same type of test , and the results show that the method is feasible , but also scientific and reasonable , but also further established test methods identified suitable condition. Finally, the development of the concept of dynamic modulus test instrument . Based on existing test data , combined with the MTS810 system specific targets, developed the functionality of the the development instrument modules, and each module has given key technical indicators of the instrument data acquisition system . Laid the foundation for the development of the instrument .

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