The characterization of the material through laboratory tests performed on asphalt mixtures offers significant performance predictions for asphalt pavements only when the material temperature is correctly taken into consideration. This paper presents an analytical pattern which, based on the thermo-physical characteristics, can predict correctly the distribution of temperatures in the mass of asphalt mixtures.
The paper also presents the organizational structure of laboratory testing, designed to validate the model for temperature determination. The temperature measurements are realized on a range of cylindrical samples at different moments in time, after submitting the sample from a low balance condition to a high balance condition by placing it in the environment precinct, according to the future test.
In conclusion, the paper aims at realizing and developing a model as a practical instrument able to offer a reliable assessment concerning the time required in order to reach the testing temperature specified for the samples of asphalt mixtures for different laboratory trials.
. Emmanuel A. Didier D. Mohamed E. Bruno D. - Mesures fluxmétriques appliquées à l’étude des caractéristiques thermophysiques d'un mortier en cours de prise. XXIIèmes rencontres universitaires de Génie Civil Marne la Vallée France 2004.
. Luca J Mrawia D. - New measurement of thermal properties of Superpave asphalt concrete. J Mater Civ Eng 2005;17:72-9.
. Spalding DB. Pun WM.- A review of methods for predicting heat transfer coefficients for laminar uniform property boundary layer flow. Int J Heat Mass Transfer 1999;5:239-49
. Zhao J. Ai X. Li YZ. - Transient temperature fields in functionally graded materials with different shapes under convective boundary conditions. Heat Mass Transfer 2007;43:1227-32.
. Xu Q. Solaimanian M. - Measurement and evaluation of asphalt concrete thermal expansion and contraction. J Test Evalu ASTM 2008:36.