PURPOSES : The performance properties (indirect tensile strength, rutting resistance, and resilient modulus) of recycled aged CRM mixtures and their correlation with Superpave binder properties (viscosity, high failure temperature, G*sinδ, and stiffness) were investigated. METHODS: A series of Superpave binder tests was performed by using a rotational viscometer, DSR, and BBR to evaluate the performance properties. In addition, the CRM mixes were artificially aged through accelerated aging processes, and their properties were evaluated. The correlation between the properties of recycled aged CRM binders and the engineering properties of recycled aged CRM mixtures was experimentally determined. RESULTS : The rut depth values decreased and the ITS values increased with increasing high failure temperature. In general, the resilient modulus properties seemed to be poorly correlated with the high-temperature values, regardless of the aggregate source. CONCLUSIONS: The recycled aged CRM binders and mixtures can lead to satisfactory performance, and the properties of these binders are strongly correlated with the engineering properties of the mixtures.

1. INTRODUCTION
2. RESEARCH OBJECTIVE and SCOPE
3. MATERIALS and TEST PROGRAM
4. RESULTS and DISCUSSIONS
5. SUMMARY and CONCLUSIONS
ACKNOWLEDGEMENT
REFERENCES

• Kim, Hyun Hwan(Texas State University·Graduate Research Assistant) | 김현환
• Jeong, Kyu Dong(Korea Institute of Civil Engineering and Building Technology·Senior Researcher) | 정규동
• Lee, Moon Sup(Korea Institute of Civil Engineering and Building Technology·Senior Researcher) | 이문섭 Corresponding author
• Lee, Soon Jae(Texas State University·Associate Professor) | 이순제