Advertisement

Experimental Study of Shear Strength Features of Regenerated Rock Mass compacted and consolidated by Broken Soft Rocks

  • Wenqiang MaEmail author
  • Tongxu Wang
Tunnel Engineering
  • 7 Downloads

Abstract

Rock mass composed of Broken Soft Rocks (BSR) under confined compression is widely distributed in geotechnical and underground engineering. To reveal the influence law of rock grain gradation and compression ratio on the shear strength properties of Regenerated Rock Mass Structure (RRMS) formed by confined compression of BSR, first, a series of compression tests of BSR with different grain gradation and compression ratios were carried out with homemade compression cylinders, through which the compression behavior of BSR was gained. In addition, the achieved Cylindrical RRMS (CRRMS) after compression was used for shear tests. Second, shear strength parameters of the CRRMS were obtained through shear tests under changing shear angle. It turns out that the CRRMS of smaller grain gradation has a better compaction degree and smoother surface. Nevertheless, the CRRMS of larger grain gradation, in contrast, has obvious gaps and a rough surface. During the compression process, the BSR of smaller grain gradation requires larger axial compression force, and the BSR of mixed grain gradations, which contain smaller grain gradation, has a better compaction effect than others. The internal friction angle of CRRMS increases with the growth in rock grain gradation, and the incremental rate of mixed grain gradations is less than those of the others. The change trend of cohesion is contrary to the internal friction angle, which decreases with the increase in grain gradation. With the homogeneous increase in the compression ratio, the internal friction angle decreases gradually, while the cohesion is contrary to the internal friction angle.

Keywords

broken soft rocks compression behavior regenerated rock mass structure shear strength grain gradation compression ratio 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Afifipour, M. and Moarefvand, P. (2014). “Mechanical behavior of bimrocks having high rock block proportion.” International Journal of Rock Mechanics and Mining Sciences, Vol. 65, No. 1, pp. 40–48, DOI: 10.1016/j.ijrmms.2013.11.008.CrossRefGoogle Scholar
  2. Amini, Y. and Hamidi, A. (2014). “Triaxial shear behavior of cemented sand-gravel mixtures.” American Society of Civil Engineers, Vol. 6, No. 5, pp. 76–83, DOI: 10.1061/9780784413388.008.Google Scholar
  3. Amini, Y., Hamidi, A., and Asghari, E. (2014). “Shear strength-dilation characteristics of cemented sand-gravel mixtures.” International Journal of Geotechnical Engineering, Vol. 8, No. 4, pp. 406–413, DOI: 10.1179/1939787913Y.0000000026.CrossRefGoogle Scholar
  4. Bamidele, A. B. and Ololade, M. O. (2018). “The compressive strength of segmental interlocking stones used as pavement materials.” International Journal of Civil Engineering and Construction Science, Vol. 5, No. 1, pp. 25–31.CrossRefGoogle Scholar
  5. Chen, R. H., Chen, K. S., and Liu, C. N. (2010). “Study of the mechanical compression behavior of municipal solid waste by temperature-controlled compression tests.” Environmental Earth Sciences, Vol. 61, No. 8, pp. 1677–1690, DOI: 10.1007/s12665-010-0481-y.CrossRefGoogle Scholar
  6. Fityus, S. and Imre, E. (2017). “The significance of relative density for particle damage in loaded and sheared gravels.” Powders & Grains, Vol. 140, 07011, DOI: 10.1051/epjconf/201714007011.Google Scholar
  7. Fityus, S. and Simmons, J. (2017). “The relationship between particle strength and particle breakage in loaded gravels.” Powers & Grains, Vol. 140, 07008, DOI: 10.1051/epjconf/201714007008.Google Scholar
  8. Hamidi, A., Alizadeh, M., and Soleimani, S. M. (2009). “Effect of particle crushing on shear strength and dilation characteristics of sand-gravel mixtures.” International Journal of Civil Engineering, Vol. 7, No. 1, pp. 61–71.Google Scholar
  9. Hubler, J., Zekkos, A. A., and Zekkos, D. (2017). “Monotonic, cyclic, and postcyclic simple shear response of three uniform gravels in constant volume conditions.” Journal of Geotechnical & Geoenvironmental Engineering, Vol. 143, No. 9, pp. 1–12, DOI: 10.1061/(ASCE)GT.1943-5606.0001723.CrossRefGoogle Scholar
  10. Islam, M. N., Siddika, A., Hossain, M. B., Rahman, A., and Asad, M. A. (2011). “Effect of particle size on the shear strength behavior of sands.” Australian Geomechanics Journal, Vol. 46, No. 3, pp. 85–95.Google Scholar
  11. Jigheh, H. S. and Jafari, K. (2012). “Volume change and shear behavior of compacted clay-sand/gravel mixtures.” International Journal of Engineering & Applied Sciences, Vol. 4, No. 1, pp. 52–66.MathSciNetGoogle Scholar
  12. Maqbool, S. and Koseki, J. (2007). “Large-scale plane strain compression tests on compacted gravel with active and passive controls.” Soils and Foundations, Vol. 47, No. 6, pp. 1063–1073, DOI: 10.3208/sandf.47.1063.CrossRefGoogle Scholar
  13. Moroto, N. and Ishii, T. (1990) “Shear strength of uni-sized gravels under triaxial compression.” Journal of the Japanese Society of Soil Mechanics and Foundation Engineering, Vol. 30, No. 2, pp. 23–32, DOI: 10.1016/0148-9062(91)92230-V.CrossRefGoogle Scholar
  14. Penumadu, D. and Zhao, R. (1999). “Triaxial compression behavior of sand and gravel using Artificial Neural Networks (ANN).” Computers & Geotechnics, Vol. 24, No. 3, pp. 207–230, DOI: 10.1016/S0266-352X(99)00002-6.CrossRefGoogle Scholar
  15. Rabczuk, T. and Belytschko, T. (2004). “Cracking particles: a simplified meshfree method for arbitrary evolving cracks.” International Journal for Numerical Methods in Engineering, Vol. 61, No. 13, pp. 2316–2343, DOI: 10.1002/nme.1151.CrossRefzbMATHGoogle Scholar
  16. Rabczuk, T., Zi, G., Bordas, S., and Nguyen-Xuan, H. (2010). “A simple and robust three-dimensional cracking-particle method without enrichment.” Computer Methods in Applied Mechanics and Engineering, Vol. 199, Nos. 37–40, pp. 2437–2455, DOI:10.1016/j.cma.2010.03.031.CrossRefzbMATHGoogle Scholar
  17. Ren, H. L., Zhuang, X. Y., Cai, Y. C., and Rabczuk, T. (2016). “Dualhorizon peridynamics.” International Journal for Numerical Methods in Engineering, Vol. 108, No. 12, pp. 1451–1476, DOI: 10.1002/nme.5257.MathSciNetCrossRefGoogle Scholar
  18. Ren, H. L., Zhuang, X. Y., and Rabczuk, T. (2017). “Dual-horizon peridynamics: A stable solution to varying horizons.” Computer Methods in Applied Mechanics and Engineering, Vol. 318, pp. 762–782, DOI: 10.1016/j.cma.2016.12.031.MathSciNetCrossRefGoogle Scholar
  19. Simoni, A. and Houlsby, G. (2006). “The direct shear strength and dilatancy of sand-gravel mixtures.” Geotechnical & Geological Engineering, Vol. 24, No. 3, pp. 523–549, DOI: 10.1007/s10706-004-5832-6.CrossRefGoogle Scholar
  20. Wang, C. and Li, W. T. (2016). “Factors affecting the mechanical properties of cement-mixed gravel.” Advances in Material Science and Engineering, Vol. 2016, No. 6, pp. 1–7, DOI: 10.1155/2016/8760325Google Scholar
  21. Wang, J. J., Qiu, Z. F., Hao, J. Y., and Zhang, J. T. (2016). “Compression characteristics of an artificial mixed soil from confined uniaxial compression tests.” Environmental Earth Sciences, Vol. 75, No. 2, pp. 152, DOI: 10.1007/s12665-015-5042-y.CrossRefGoogle Scholar
  22. Wang, C. and Zhan, C. N. (2011). “Gravel content effect on the shear strength of clay-gravel mixtures.” Applied Mechanics & Materials, Vol. 71–78, pp. 4685–4688, DOI: 10.4028/www.scientific.net/AMM.71-78.4685.CrossRefGoogle Scholar
  23. Yang, J., Cai, X., Pang, Q., Guo, X. W., Wu, Y. L., and Zhao, J. L. (2018). “Experimental study on the shear strength of cement-sandgravel material.” Advances in Material Science and Engineering, Vol. 2018, pp. 1–11, DOI: 10.1155/2018/2531642.Google Scholar
  24. Zhou, S. W., Rabczuk, T., and Zhuang, X. Y. (2018). “Phase field modeling of quasi-static and dynamic crack propagation: COMSOL implementation and case studies.” Advances in Engineering Software, Vol. 122, pp. 31–49, DOI: 10.1016/j.advengsoft.2018.03.012.CrossRefGoogle Scholar
  25. Zhou, S. W. and Xia, C. C. (2018). “Propagation and coalescence of quasi-static cracks in Brazilian disks: an insight from a phase field model.” Acta Geotechnica, DOI: 10.1007/s11440-018-0701-2.Google Scholar
  26. Zhou, S. W., Xia, C. C., Du, S. G., Zhang, P. Y., and Zhou, Y. (2015). “An analytical solution for mechanical responses induced by temperature and air pressure in a lined rock cavern for underground compressed air energy storage.” Rock Mechanics and Rock Engineering, Vol. 48, No. 2, pp. 749–770, DOI: 10.1007/s00603-014-0570-4.CrossRefGoogle Scholar
  27. Zhou, S. W., Xia, C. C., Hu, Y. S., Zhou, Y., and Zhang, P. Y. (2015). “Damage modeling of basaltic rock subjected to cyclic temperature and uniaxial stress.” International Journal of Rock Mechanics and Mining Sciences, Vol. 77, pp. 163–173, DOI: 10.1016/j.ijrmms. 2015.03.038.CrossRefGoogle Scholar
  28. Zhou, S. W. and Zhuang, X. Y. (2018). “Adaptive phase field simulation of quasi-static crack propagation in rocks.” Underground Space, Vol. 3, pp. 190–205, DOI: 10.1016/j.undsp.2018.04.006.CrossRefGoogle Scholar
  29. Zhou, S. W., Zhuang, X. Y., and Rabczuk, T. (2018). “A phase-field modeling approach of fracture propagation in poroelastic media.” Engineering Geology, Vol. 47, pp. 189–203, DOI: 10.1016/j.enggeo.2018.04.008.CrossRefGoogle Scholar
  30. Zhou, S. W., Zhuang, X. Y., Zhu, H. H., and Rabczuk, T. (2018). “Phase field modeling of crack propagation, branching and coalescence in rocks.” Theoretical and Applied Fracture Mechanics, Vol. 96, pp. 174–192, DOI: 10.1016/j.tafmec.2018.04.011.CrossRefGoogle Scholar

Copyright information

© Korean Society of Civil Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.College of Architecture and Civil EngineeringXinyang Normal UniversityXinyangChina
  2. 2.State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and TechnologyShandong University of Science and TechnologyQingdaoChina

Personalised recommendations