This paper evaluates the effect of two kinds of recycled coarse aggregate with different sized particles on the performance of concrete. The test program is introduced, which investigated the compressive strength, axial compressive strength, the mass loss rate of concrete specimens after a freeze-thaw cycle and dynamic elasticity modulus change. The results show that the mechanical properties of the concrete decreased when it was prepared with recycled aggregate having the same size as that of the natural aggregates. The strength of the concrete with large-size recycled aggregate increased, and then decreased as the blend proportion rose above 50%. The strength of concrete incorporating oversized recycled aggregates exhibited a trend of rising and then falling with increasing mixing ratio. The 28-day compressive strength reached 45Mpa when the mixing amount was 50%. The durability of the large-size recycled aggregate was also found to improve compared with the freezing and thawing cycle experiments. These results provide a reference for research on the performance of recycled aggregate concrete.

Abstract
1. Introduction
2. Experimental Procedure
    2.1. Materials
    2.2. Concrete mixing ratio
    2.3. Production methods
3. Results and Discussion
    3.1. Compressive strength
    3.2. Axial compressive strength
    3.3. Freeze-thaw cycle experiment
4. Conclusion
Acknowledgement
References
Author Information

• Jianjun Liu(Anhui Province International Research Center on Advanced Building Materials, Anhui Jianzhu University, Hefei 230022, China)
• Qian Wang(Anhui Province International Research Center on Advanced Building Materials, Anhui Jianzhu University, Hefei 230022, China)
• Jiacan Lin(Anhui Province International Research Center on Advanced Building Materials, Anhui Jianzhu University, Hefei 230022, China)
• Jichen Zhang(Anhui Province International Research Center on Advanced Building Materials, Anhui Jianzhu University, Hefei 230022, China)
• Yao Ge(Anhui Province International Research Center on Advanced Building Materials, Anhui Jianzhu University, Hefei 230022, China)
• Yi Ding(Anhui Province International Research Center on Advanced Building Materials, Anhui Jianzhu University, Hefei 230022, China, Anhui Province Key Laboratory of Advanced Building Materials, Anhui Jianzhu University, Hefei 230022, China)
• Qifang Ren(Anhui Province International Research Center on Advanced Building Materials, Anhui Jianzhu University, Hefei 230022, China, Anhui Province Key Laboratory of Advanced Building Materials, Anhui Jianzhu University, Hefei 230022, China) Corresponding author
• Yanyan Wang(Anhui Construction Engineering Inspection Technology Group Co., Ltd., Heifei 230031, China)
• Wei Xu(Anhui Construct & Bldg Mat Technol Group Co., Ltd., Hefei 230001, China)
• Won-Chun Oh(Department of Advanced Materials Science and Engineering, Hanseo University, Seosan 31962, Republic of Korea) Corresponding author