Dynamic Modulus Characteristic of Large Stone Permeable Asphalt Mixtures

Abstract:

To study the dynamic modulus characteristic of LSPM mixes, dynamic modulus test was conducted for Large Stone Permeable Asphalt Mixtures (LSPM ) with neat asphalt and with modified asphalt and the range of dynamic modulus values for LSPM was determined and the dynamic modulus master curves were developed. The magnitude of the dynamic modulus decreased with an increase in temperature and increased with an increase in the frequency. The phase angle decreased as the frequency increased at low temperature. With temperature increase, there was a transition interval, where the phase angle increased up to frequencies of 0.5 Hz, and then it started to decrease as frequency increased. After the transition interval, the phase angle increased with an increase in frequency. Master curves developed by sigmoidal function showed that LSPM with modified asphalt exhibited higher dynamic modulus values at middle and high frequencies and lower dynamic modulus values at low frequencies.

• Periodical: Applied Mechanics and Materials (Volumes 423-426)
• Pages: 1110-1113
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.423-426.1110
• Online since: September 2013
• Authors: Jin Cheng Wei*, Jin Li
• Keywords: Asphalt Pavement, Dynamic Modulus, LSPM, Master Curve, Phase Angle

References

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DOI: 10.3141/2057-14