INVESTIGATION OF LOADING CHARACTERISTICS INFLUENCE ON RESILIENT MODULUS OF ASPHALT MIXTURES

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FAKHRI M.; TANAKIZADEH A.; GHANIZADEH A.R.

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Paper Information

Journal: JOURNAL OF TRANSPORTATION RESEARCH Year:2015 | Volume:11 | Issue:4 (41) Page(s): 335-354

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Title

INVESTIGATION OF LOADING CHARACTERISTICS INFLUENCE ON RESILIENT MODULUS OF ASPHALT MIXTURES

Author(s)

FAKHRI M. | TANAKIZADEH A. | GHANIZADEH A.R. | Issue Writer Certificate

Keywords

RESILIENT MODULUSQ2

LOADING TIMEQ2

REST PERIOD TO LOADING TIME RATIOQ2

LOADING WAVEFORMQ2

Abstract

One of the key parameters to design flexible pavements is the RESILIENT MODULUS of HMA. For determining the RESILIENT MODULUS of asphalt concrete, commonly the indirect tension test has been used which includes loading the sample with a haversine pulse with duration of 0.1s and a rest period of 0.9 seconds at different temperatures. Due to the viscoelastic nature of asphalt mixes and the influence of LOADING TIME, rest period and LOADING WAVEFORM on the RESILIENT MODULUS of HMA, this paper deals with the effect of LOADING TIME, rest period and LOADING WAVEFORM on the RESILIENT MODULUS of HMA. To reach this end, the RESILIENT MODULUS test using the indirect tension test method was carried out on the asphalt mix specimens prepared with both unmodified and SBS-modified bitumen. Then, the RESILIENT MODULUS of specimens were determined using haversine and square loading at three different temperatures of 5, 25 and 40oC by varying the duration and rest period of applied load and results are compared to each other. Some models have been presented to predict the RESILIENT MODULUS of HMA by regression analysis. According to the experimental results, the most significant factors to enhance the RESILIENT MODULUS of HMA were the reduction of temperature, increase of LOADING TIME and SBS content in asphalt mixture, and finally the reduction of the rest period to LOADING TIME ratio. The most important factors to decrease the RESILIENT MODULUS of HMA were increase of temperature; change the haversine waveform to square waveform, and increase of LOADING TIME.

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APA: Copy

FAKHRI, M., TANAKIZADEH, A., & GHANIZADEH, A.R.. (2015). INVESTIGATION OF LOADING CHARACTERISTICS INFLUENCE ON RESILIENT MODULUS OF ASPHALT MIXTURES. JOURNAL OF TRANSPORTATION RESEARCH, 11(4 (41)), 335-354. SID. https://sid.ir/paper/83904/en

Vancouver: Copy

FAKHRI M., TANAKIZADEH A., GHANIZADEH A.R.. INVESTIGATION OF LOADING CHARACTERISTICS INFLUENCE ON RESILIENT MODULUS OF ASPHALT MIXTURES. JOURNAL OF TRANSPORTATION RESEARCH[Internet]. 2015;11(4 (41)):335-354. Available from: https://sid.ir/paper/83904/en

IEEE: Copy

M. FAKHRI, A. TANAKIZADEH, and A.R. GHANIZADEH, “INVESTIGATION OF LOADING CHARACTERISTICS INFLUENCE ON RESILIENT MODULUS OF ASPHALT MIXTURES,” JOURNAL OF TRANSPORTATION RESEARCH, vol. 11, no. 4 (41), pp. 335–354, 2015, [Online]. Available: https://sid.ir/paper/83904/en

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