Testing and Modeling of Bituminous Mortar Response

查看全文 作　　者：Woldekidan [1]MF;Huurman [1]M;Mo [1,2]LT 机构地区：[1]Department of Civil Engineering, Delft University of Technology;[2]Key Laboratory of Silicate Materials Science and Engineering, Wuhan University of Technology 出　　处：《Journal of Wuhan University of Technology(Materials Science)》索引2010年第25卷第4期,共4页 摘　　要：A dynamic shear rheometer (DSR) setup, with a modified test geometry specifically developed for the mortar, was used to conduct time and frequency domain tests. The mortar was composed of a pure bitumen, filler and fine fractions of sand. In the test setup two mounting procedures were compared and the one that delivers better test result repeatability was selected. Test results obtained from frequency domain tests were used to construct a master curve using time-temperature superposition principle (TTS). Time domain material functions were obtained from the master curve by using frequency-time domain inter-conversion. In this process a series of Kelvin-Voigt element were used. Using material parameters obtained from frequency domain results, creep-recovery tests in time domain were simulated using a Matlab program. Results show a very good agreement with experimentally obtained creep-recovery data. 关 键 词：沥青砂浆 试验模拟 动态剪切流变仪 测试开发 建模 频域测试 MATLAB 叠加原理