Experimental Study on Static and Dynamic Compressive Resilient Modulus
刘靖宇1, 颜燕舞2, 刘朝晖1, 黄优1
1. School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha Hunan 410004, China; 2. China Railway Siyuan Survey and Design Group CO., LTD, Wuhan Hubei, 430063, China
Experimental Study on Static and Dynamic Compressive Resilient Modulus
LIU Jing-yu1, YAN Yan-wu2, LIU Zhao-hui1, HUANG You1
1. School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha Hunan 410004, China; 2. China Railway Siyuan Survey and Design Group CO., LTD, Wuhan Hubei, 430063, China
摘要To study the effect law of asphalt mixture composition design and static/dynamic test methods on resilient modulus, and consummate the design parameters of asphalt mixture, the laboratory tests on static/dynamic compression resilient moduli and strength are conducted by the uniaxial unconfined method and top measuring method by MTS-810. The result shows that (1) there is no direct relationship between strength and resilient modulus of asphalt mixture; (2) both the aggregate gradation and asphalt quality can influence the value of resilient modulus, and the influence from asphalt quality is more significant. By studying the deformation law of the material under static and dynamic loading throughout the test, and combining with the Kelvin mechanic model and viscoelastic theory of asphalt mixture, the limitations of the static and dynamic moduli are demonstrated. It shows that the viscoelastic property is the important factor affecting the values of static and dynamic moduli of the mixture, and resulting in smaller values of moduli. In the end, the linear relationship between static and dynamic moduli is researched, and the conversation equation of static and dynamic moduli for different nominal maximum aggregate sized mixture is obtained, which is more accurate compared to the existing formula.
Abstract：To study the effect law of asphalt mixture composition design and static/dynamic test methods on resilient modulus, and consummate the design parameters of asphalt mixture, the laboratory tests on static/dynamic compression resilient moduli and strength are conducted by the uniaxial unconfined method and top measuring method by MTS-810. The result shows that (1) there is no direct relationship between strength and resilient modulus of asphalt mixture; (2) both the aggregate gradation and asphalt quality can influence the value of resilient modulus, and the influence from asphalt quality is more significant. By studying the deformation law of the material under static and dynamic loading throughout the test, and combining with the Kelvin mechanic model and viscoelastic theory of asphalt mixture, the limitations of the static and dynamic moduli are demonstrated. It shows that the viscoelastic property is the important factor affecting the values of static and dynamic moduli of the mixture, and resulting in smaller values of moduli. In the end, the linear relationship between static and dynamic moduli is researched, and the conversation equation of static and dynamic moduli for different nominal maximum aggregate sized mixture is obtained, which is more accurate compared to the existing formula.
基金资助:Supported by the National Nature Science Foundation of China (Nos.51678078,52008044)
通讯作者:
LIU Jing-yu
E-mail: 365350073@qq.com
引用本文:
刘靖宇, 颜燕舞, 刘朝晖, 黄优. Experimental Study on Static and Dynamic Compressive Resilient Modulus[J]. Journal of Highway and Transportation Research and Development, 2020, 14(3): 44-52.
LIU Jing-yu, YAN Yan-wu, LIU Zhao-hui, HUANG You. Experimental Study on Static and Dynamic Compressive Resilient Modulus. Journal of Highway and Transportation Research and Development, 2020, 14(3): 44-52.
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2020, Vol. 14 
