Establishing Default Dynamic Modulus Values for New England

摘要

The objective of this research is to test commonly used HMA mixtures throughout New England to determine their respective moduli. The results of this testing will be: (1) Used to determine if there is a significant difference between dynamic modulus values for materials from throughout the region. (2) Used to compare the dynamic modulus of lab produced mixes and plant produced mixes. (3) Compared against the master curves derived by performing the reduced testing as outlined by Bonaquist and Christensen (2005). This will reduce the number of temperatures as well as the number of frequencies tested. If this process correlates well with the full set testing master curves, it will reduce the amount of time required to conduct the testing. (4) Compare lab measured (vertical bar)E*(vertical bar) against the predictive moduli obtained by using the Witczak Predictive Model, the Hirsh Model and the Olard-Di Benedetto (ODB) model. If there is a strong correlation between the tested and predicted values then this would provide a reasonable value for the dynamic modulus for most HMA designs in the 2002 Pavement Design Guide.