The SCB configuration for the determination of the dynamic modulus of asphalt mixtures

2019 ◽  
pp. 245-250
Author(s):  
S.M. Angelone ◽  
M. Cauhape Casaux ◽  
F.O. Martinez
Keyword(s):  
Dynamic Modulus ◽  
Asphalt Mixtures

Precision Analysis of Sigmoidal Master Curve Model for Dynamic Modulus of Asphalt Mixtures

2018 ◽  
Vol 30 (11) ◽  
pp. 04018290 ◽  
Author(s):  
Ningyi Su ◽  
Feipeng Xiao ◽  
Jingang Wang ◽  
Serji Amirkhanian
Keyword(s):  
Dynamic Modulus ◽  
Master Curve ◽  
Asphalt Mixtures ◽  
Precision Analysis ◽  
Curve Model

Pre-grading of spruce logs containing frozen and unfrozen water by means of frequency-based nondestructive testing (NDT)

Holzforschung ◽  
2016 ◽  
Vol 70 (1) ◽  
pp. 79-85 ◽  
Author(s):  
Julia K. Denzler ◽  
Andreas Weidenhiller
Keyword(s):  
Nondestructive Testing ◽  
Moisture Content ◽  
Industrial Application ◽  
Modulus Of Elasticity ◽  
Dynamic Modulus ◽  
The State ◽  
Temperature Measurements ◽  
Unfrozen Water ◽  
State Of Matter

AbstractThe possibility for pre-grading of logs throughout the year has been evaluated based on dynamic modulus of elasticity (MOEdynor simplifiedEdyn) by means of frequency-based nondestructive testing (NDTfreq). The challenge is thatEdynis variable in the frozen, partly frozen, and unfrozen states of logs (state of matter). In the unfrozen state, NDTfreqis reliable if the moisture content does not fall below fiber saturation. The state of the matter was tested via temperature measurements of air and log by means of an infrared technique and sensors, and information was evaluated from NDTfreq. The temperature measurements proved to be inefficient for industrial application because of unreliable data and long measurement times, whereas the NDTfreqmeasurements allowed the determination of meaningful damping factors. A sufficient level of predictability for more than 60% of the measurements was found. The log measurements in the partly frozen state are inconclusive becauseEdyndata fluctuate in the presence of both liquid and frozen water. For the completely frozen logs, a correction is introduced as a precaution that avoids an overestimation ofEdynin the unfrozen state.

Experimental Analysis of Dynamic Modulus and Phase Angle of High Modulus Asphalt Mixture

2011 ◽  
Vol 243-249 ◽  
pp. 4220-4225
Author(s):  
Rui Bo Ren ◽  
Li Tao Geng ◽  
Li Zhi Wang ◽  
Peng Wang
Keyword(s):  
Phase Angle ◽  
Dynamic Modulus ◽  
Asphalt Mixture ◽  
Performance Testing ◽  
Asphalt Mixtures ◽  
Testing System ◽  
High Modulus ◽  
Temperature Performance ◽  
Different Temperatures ◽  
Confining Pressures

To study the mechanical properties of high modulus asphalt mixtures, dynamic modulus and phase angle of these two mixtures are tested with Simple Performance Testing System under different temperatures, loading frequencies and confining pressures. Testing results show the superiority of high modulus asphalt mixture in aspect of high temperature performance. Furthermore, the changing rules of dynamic modulus and phase angle are also discussed.

Accuracy of MEPDG Dynamic Modulus Predictions for Short-Term and Long-Term Aged Asphalt Mixtures

2019 ◽  
Vol 145 (3) ◽  
pp. 04019025
Author(s):  
Mir S. Arefin ◽  
Tanvir Quasem ◽  
Munir Nazzal ◽  
Samer Dessouky ◽  
Ala R. Abbas
Keyword(s):  
Dynamic Modulus ◽  
Asphalt Mixtures ◽  
Short Term ◽  
Aged Asphalt
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