Experimental study on the ultrasonic nonlinear damage characteristics of expansive soil during constant amplitude dry-wet cycles

Document Type : Article

Authors

1 College of Civil Engineering and Architecture, Key Laboratory of Disaster Prevention and Structural Safety, Guangxi University, Nanning 530004, China

2 School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410004, China

Abstract

Dry-wet cycles can cause fatigue damage to expansive soil, and various control parameters of the dry-wet cycles (initial moisture content, number of dry-wet cycles, cycle amplitude, etc.) can affect the development of soil damage. Therefore, it is important to study the fatigue damage characteristics of expansive soil under dry-wet cycles of constant amplitude. This paper considers expansive soil from Baise in Guangxi, China, as the research object. Based on tests of the P-wave velocity and low-stress shear strength of expansive soil under 0-6 constant amplitude dry-wet cycles, the attenuation laws for the P-wave velocity were analysed, the damage variable of expansive soil was characterized by P-wave velocity, and the rationality of this damage variable was verified by measuring the low-stress shear strength values of expansive soil specimens. Based on the experimental P-wave velocity results, a nonlinear empirical model of fatigue damage for expansive soil was constructed. The results illustrate that the P-wave velocity of an expansive soil sample decreases nonlinearly with an increasing number of dry-wet cycles and that the damage degree increases nonlinearly with an increasing number of cycles. The P-wave velocity can be successfully used to define a representative damage variable for expansive soil.

Keywords


References
1. Mehta, B. and Sachan, A. “Effect of mineralogical properties of expansive soil on its mechanical behavior”, Geotechnical and Geological Engineering, 35(6), pp. 2923-2934 (2017). DOI: 10.1007/s10706-017-0289-6
2. Tang, C.S., Cui, Y.J., Shi, B., Tang, A.M., and Liu, C. “Desiccation and cracking behaviour of clay layer from slurry state under wetting-drying cycles”, Geoderma, 166(1), pp. 111-118 (2011). DOI: 10.1016/j.geoderma.2011.07.018
3. Wei, B.X. and Huang, Z. “Assessment of change in acoustic wave velocity of compacted expansive soil through experiments”, Scientia Iranica, 24(1), pp. 136-142 (2017). DOI: 10.24200/sci.2017.2383
4. Noorany, I. and Scheyhing, C. “Lateral extension of compacted-fill slopes in expansive soils”, Journal of Geotechnical and Geoenvironmental Engineering, 141(1), p. 04014083 (2015). DOI: 10.1061/(ASCE)GT.1943-5606.0001190
5. Miner, M.A. “Cumulative damage in fatigue”, ASME Journal of Applied Mechanics, 67(9), pp. A159-A164 (1945).
6. Jardin, A., Leblond, J., Berghezan, D., and Portigliatti, M. “Definition and experimental validation of a new model for the fatigue of elastomers incorporating deviations from Miners linear law of cumulative damage”, Procedia Engineering, 2(1), pp. 1643-1652 (2010). https://doi.org/10.1016/j.proeng.2010.03.177.
7. Lynn, A.K. and DuQuesnay, D.L. “Computer simulation of variable amplitude fatigue crack initiation behaviour using a new strain-based cumulative damage model”, International Journal of Fatigue, 24(9), pp.977–986 (2002). DOI: 10.1016/S0142-1123(02)00007-5
8. Gens, A. and Alonso, E.E. “A framework for the behaviour of unsaturated expansive clays”, Canadian Geotechnique Journal, 29(6), pp.1013–1032 (1992). DOI: 10.1016/0148-9062(93)92392-4
9. Lu, Z., Chen, Z., Fang, X., Guo, J., and Zhou, H. “Structure damage model of unsaturated expansive soil and its application in multi-field couple analysis on expansive soil slope”, Applied Mathematics and Mechanics-English Edition, 27(7), pp.891–900 (2006). DOI: 10.1007/s10483-006-0704-1
10. Shi, B., Chen, S., Han, H., and Zheng, C. “Expansive soil crack depth under cumulative damage”,The Scientific World Journal, p. 498437 (2014). DOI: 10.1155/2014/498437
11. Tang, L., Cong, S., Ling, X., Xing, W., and Nie, Z. “A unified formulation of stress-strain relations considering micro-damage for expansive soils exposed to freeze-thaw cycles”, Cold Regions Science and Technology, 153, pp.164–171 (2018). DOI: 10.1016/j.coldregions.2018.05.006
12. Xue, X.H., Yang, X.G., Zhang, W.H., and Dai, F. “A soil damage model expressed by a double scalar and its applications”, ACTA Mechanica, 225(9), pp.2667-2683 (2014). DOI: 10.1007/s00707-014-1097-1
13. Xu, J., Li, Y., Lan, W., and Wang, S. “Shear strength and damage mechanism of saline intact loess after freeze-thaw cycling”, Cold Regions Science and Technology, 164, pp.102779 (2019). DOI: 10.1016/j.coldregions.2019.05.005
14. Chen, J., Wang, H., and Yao, Y. “Experimental study of nonlinear ultrasonic behavior of soil materials during the compaction”, Ultrasonics, 69, pp. 19–24 (2016). DOI: 10.1016/j.ultras.2016.03.001
15. Wang, P., Xu, J., Fang, X., Wang, P., Zheng, G., and Wen, M. “Ultrasonic time-frequency method to evaluate the deterioration properties of rock suffered from freeze-thaw weathering”, Cold Regions Science and Technology, 143, pp. 13-22 (2017). DOI: 10.1016/j.coldregions.2017.07.002
16. Saroglou, C. and Kallimogiannis, V. “Fracturing process and effect of fracturing degree on wave velocity of a crystalline rock”, Journal of Rock Mechanics and Geotechnical Engineering, 9(5), pp. 797-806 (2017). DOI: 10.1016/j.jrmge.2017.03.012
17. Xu, Y., Li, J., Duan, J., Song, S., Jiang, R., and Yang, Z. “Soil water content detection based on acoustic method and improved Brutsaert's model”, Geoderma359, p. 114003 (2020). DOI: 10.1016/j.geoderma.2019.114003
18. Zhao, M.J. and Xu, R. “The rock damage and strength study based on ultrasonic velocity”, Chinese Journal of Geotechnical Engineering, 22(6), pp. 720-722 (2000).
19. Jin, J.F., Zhong H.B., Wu, Y., Guo, Z.Q., and Zhou, X.J. “Mehtod selection for defining damage variable of rock subjected to static loadings and cyclic impacts”, Nonferrous Metals Science and Engineering, 4(4), pp. 85-90 (2013).
20. Thyagaraj, T. and Rao, S.M. “Influence of osmotic suction on the soil-water characteristic curves of compacted expansive clay”, Journal of Geotechnical and Geoenvironmental Engineering136(12), pp. 1695-1702 (2010). DOI: 10.1061/(ASCE)GT.1943-5606.0000389
21. Huang, Z., Wei, B.X., Zhang, L.J., Chen, W., and Peng, Z.M. “Surface crack development rules and shear strength of compacted expansive soil due to dry-wet cycles”, Geotechnical and Geological Engineering, 37(4), pp. 2647-2657 (2019). DOI: 10.1007/s10706-018-00784-y
22. Xiao, J., Yang, H.P., Zhang, J.H., and Tang, X.Y. “Surficial Failure of Expansive Soil Cutting Slope and Its Flexible Support Treatment Technology”, Advances in Civil Engineering, p. 1609608 (2018). DOI: 10.1155/2018/1609608
23. Yang, H.P., Zheng, J.L., and Zhang, R. “Addressing expansive soils”, Civil Engineering77(3), pp. 62-69 (2007). DOI: 10.1061/ciegag.0000112
24. Dong, J.G., Xu, G.Y., Lv, H.B., and Yang, J.Y., “An instrument for wetting-drying cycle of expansive soil under simulated loads and experimental research”, Journal of Engineering Research. 7(3), pp. 1-12 (2019).