The cyclic loading frequency (f) effects on the resilient modulus (M) 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 (N) to investigate the effect of f and deviator stress amplitude (q) on the M of FTCFG. The freezing-thawing cyclic was found to improve the M of FTCFG. Additionally, M 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 q, f and moisture holding capacity (w). Finally, a rate dependent model of long-term resilient modulus was developed to predict FTCFG materials' resilient moduli as a function of q, f and w. The comparisons between the calculation and experimental results reveal that the present model describes the M of FTCFG well.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9581894 | PMC |
| http://dx.doi.org/10.1038/s41598-022-19647-x | DOI Listing |
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