The Numerical Simulation of the Triaxial Test of Cemented Coarse-Grained Soils

Abstract:

Cemented coarse-grained soils have both the properties of coarse-grained soils and concrete. This paper used discrete element method (DEM) to simulate of the drained monotonic load triaxial tests of coarse-grained soils and cemented coarse-grained soils respectively, the microscopic parameters of numerical models were calibrated based on the tests. The characteristics of the cemented coarse-grained soils and the microscopic mechanism were analyzed. The results showed that, the cemented coarse-grained soils have the higher modulus and strength compared with coarse-grained with adding the 3% cement in the specimens and appear the significant strain softening after the stress reaches the peak value; the deformation of the soil particles,the friction between soil particles and the crack of the cement bond are the mainly internal factors.

• Periodical: Advanced Materials Research (Volumes 250-253)
• Pages: 2640-2644
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.250-253.2640
• Online since: May 2011
• Authors: Bin Xu, Wei Luo, De Gao Zou, Xian Jing Kong, Yang Zhou
• Keywords: Cemented Coarse-Grained Soils, DEM, Numerical Simulation, Particle Flow Code

References

[1] P. Londe and M. Lino., The faced symmetrical hardfill dam: a new concept for RCC[J]. International Water Power & Dam Construction, February. 1992, 44(2):19-24.

[2] Lalana Kongsukprasert, Fumio Tatsuoka and Hirofumi Takahashi. Strength characteristics of cement-mixed gravel evaluated by large triaxial compression tests. Proc. 3rd Int. Symp. on Deformation Characteristics of Geomaterials, IS Lyon 03, Balkema, Sept. 2003, 683-693.

DOI: 10.1201/noe9058096043.ch85

[3] Lohani, T. N., Kongsukprasent, L., Watanabe, K., & Tatsuoka, F. Strength and deformation characteristics of cement-mixed gravel for engineering use, Proc. 3rd Int. Sym. on Deformation Characteristics of Geomaterials, IS Lyon 03 (Di Benedetto et al. eds.), Balkema, September, 2003, pp.637-643.

DOI: 10.1201/noe9058096043.ch79

[4] Sugai, M. and Tatsuoka, F., Ageing and loading rate effects on the stress-strain behaviour of a cement-mixed soft clay, Proc. 3rd Int. Sym. on Deformation Characteristics of Geomaterials, IS Lyon 03 (Di Benedetto et al. eds.), Balkema, September, 2003, pp.627-635.

DOI: 10.1201/noe9058096043.ch78

[5] Haeri, S, Hosseini, S, Toll, David, Yasrebi, S., The behaviour of an artificially cemented sandy gravel. Geotechnical and Geological Engineering, September 2005, 23(5):537-560.

DOI: 10.1007/s10706-004-5110-7

[6] PFC3D (Particle Flow Code in 3 Dimensions). Version 3.1.Minneapolis: Itasca Consulting Group; 1999.

[7] SHI Dan-da, Numerical simulation for behaviors of sand with non-circular particles under monotonic shear loading. Chinese Journal of Geotechnical Engineering, 2008, 30(9):1361-1366