1. A long term resilient modulus rate dependent model for coarse fine mixtures geomaterials under freezing and thawing cyclic.
- Author
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Wang, Ke, Tang, Liang, Tian, Shuang, Ling, XianZhang, Ye, Yangsheng, Cai, Degou, and Liu, Min
- Subjects
FREEZING ,THAWING ,CYCLIC loads ,FREEZE-thaw cycles - Abstract
The cyclic loading frequency (f
cyc ) effects on the resilient modulus (Mr ) of freezing–thawing coarse–fine mixtures geomaterials (FTCFG) have always been a research hotspot. A series of long-term cyclic triaxial tests were conducted on FTCFG having different fines content (FC) under different number of freeze–thaw cycles (NFT ) to investigate the effect of fcyc and deviator stress amplitude (qcyc ) on the Mr of FTCFG. The freezing–thawing cyclic was found to improve the Mr of FTCFG. Additionally, Mr of FTCFG shown an obviously rate-dependent characteristics. Then three kinetic effects (rate effect, piston effect, and fatigue effect) are discussed in systemically which are related to qcyc , fcyc and moisture holding capacity (wh ). Finally, a rate dependent model of long-term resilient modulus was developed to predict FTCFG materials' resilient moduli as a function of qcyc , fcyc and wh . The comparisons between the calculation and experimental results reveal that the present model describes the Mr of FTCFG well. [ABSTRACT FROM AUTHOR]- Published
- 2022
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