Semnan University Press Journal of Transportation Infrastructure Engineering 2423-5350 4 4 2019 01 21 Evaluation of fatigue and rutting characteristics of bitumens containing Warm additives Evaluation of fatigue and rutting characteristics of bitumens containing Warm additives 1 14 2344 10.22075/jtie.2017.916.1044 FA Hasan Ziari Professor, Department of Civil Engineering, Iran University of Science and Technology, Tehran, Iran. Rezvan Babagoli Department of Civil Engineering, University of Science and Technology of Mazandaran, Behshahr, Mazandaran, Iran. Peyman Mirzababaie PhD Student, Civil and Environmental Engineering Department, Amirkabir University of Technology, Tehran, Iran Journal Article 2015 09 10 In order to reduce fuel consumption and CO2 emission in producing and paving asphalt concrete, the warm technology has gained a lot of interests in the recent years in academia and/or industry. In this research study, three warm additives (Sasobit, Rheofalt, and Zycotherm) were used to modify original binder (60-70 penetration grade. (The test data are used to assess the stress sensitivity of asphalt binders at different percentages of additives. The binder fatigue and rutting performance was evaluated through Linear Amplitude Sweep (LAS) and multiple stress creep and recovery (MSCR) test, respectively. The multiple stress creep and recovery (MSCR) test was used to determine the percent recoveries (R), the non-recoverable compliances (Jnr) and the percent differences in non-recoverable compliances (Jnr-diff) of these modified asphalt binders. Results indicated that 3% Sasobit modified binder has the highest percent recovery value and the lowest Jnr value, but had the highest sensitivity to a sudden increase in the stress level inside the asphalt mixture. Unlike the other asphalt binders, the rheofalt and zycotherm modified binders showed small increases in R and slight decreases in Jnr at 64°C temperature. The LAS test results demonstrated that for low strain levels, the fatigue behavior of asphalt binders modified with 1% Sasobit, is the highest one. However, for high strain levels, the 2% Rheofalt had a better fatigue behavior than the other modified binders. In order to reduce fuel consumption and CO2 emission in producing and paving asphalt concrete, the warm technology has gained a lot of interests in the recent years in academia and/or industry. In this research study, three warm additives (Sasobit, Rheofalt, and Zycotherm) were used to modify original binder (60-70 penetration grade. (The test data are used to assess the stress sensitivity of asphalt binders at different percentages of additives. The binder fatigue and rutting performance was evaluated through Linear Amplitude Sweep (LAS) and multiple stress creep and recovery (MSCR) test, respectively. The multiple stress creep and recovery (MSCR) test was used to determine the percent recoveries (R), the non-recoverable compliances (Jnr) and the percent differences in non-recoverable compliances (Jnr-diff) of these modified asphalt binders. Results indicated that 3% Sasobit modified binder has the highest percent recovery value and the lowest Jnr value, but had the highest sensitivity to a sudden increase in the stress level inside the asphalt mixture. Unlike the other asphalt binders, the rheofalt and zycotherm modified binders showed small increases in R and slight decreases in Jnr at 64°C temperature. The LAS test results demonstrated that for low strain levels, the fatigue behavior of asphalt binders modified with 1% Sasobit, is the highest one. However, for high strain levels, the 2% Rheofalt had a better fatigue behavior than the other modified binders. https://jtie.semnan.ac.ir/article_2344_1c99c71074d495e8f0bbacc27324e204.pdf