Effect of loading mode on asphalt mixture dynamic modulus
(1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang′
an University, Xi′an, Shaanxi 710064, China; 2. Henan Zhoukou Highway Administration
Bureau, Zhoukou, Henan 466000, China)
Abstract：To investigate the effect of loading mode on dynamic modulus and determine
appropriate loading mode of asphalt mixture dynamic modulus test, the effects of loading
frequency, load level and loading clearance time on asphalt mixture dynamic modulus were
analyzed on MTS810 testing machine. The results indicate that loading frequency and load
level have significant effects on dynamic modulus test results, and load level has more
influence on dynamic modulus than that of loading frequency. The loading modes with and
without clearance time have little influence on dynamic modulus. Loading mode without
clearance time should be used in asphalt mixture indoor dynamic modulus test with loading
frequency and load level of 10 Hz and 0.7 MPa, respectively. Under the optimal conditions,
the asphalt mixture dynamic modulus value is in the range from 2 000 MPa to 2 700 MPa.
2016, Vol. 37 
