Geomechanics and Engineering

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Experimental study on modified low liquid limit silt for abutment backfill in bridge-embankment transition section

  • Shu-jian Wang (Geotechnical and Structural Engineering Research Center, Shandong University) ;
  • Yong Sun (Geotechnical and Structural Engineering Research Center, Shandong University) ;
  • Zhen-bao Li (Geotechnical and Structural Engineering Research Center, Shandong University) ;
  • Kai Xiao (Shandong Luqiao Group CO., Ltd.) ;
  • Wei Cui (School of Qilu Transportation, Shandong University)
  • Received : 2022.05.19
  • Accepted : 2023.02.19
  • Published : 2023.03.25
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Abstract

Low liquid limit silt, widely distributed in the middle and down reaches of Yellow River, has the disadvantages of poor grading, less clay content and poor colloidal activity. It is very easy to cause vehicle jumping at the bridge-embankment transition section when the low liquid limit silt used as the backfill at the abutment back. In this paper, a series of laboratory tests were carried out to study the physical and mechanical properties of the low liquid limit silt used as back filling. Ground granulated blast furnace slag (GGBFS) was excited by active MgO and hydrated lime to solidify silt as abutment backfill. The optimum ratio of firming agent and the compaction and mechanical properties of reinforced soil were revealed through compaction test and unconfined compressive strength (UCS) test. Scanning electron microscope (SEM) test was used to study the pore characteristics and hydration products of reinforced soil. 6% hydrated lime and alkali activated slag were used to solidify silt and fill the model of subgrade respectively. The pavement settlement regulation and soil internal stress-strain regulation of subgrade with different materials under uniformly distributed load were studied by model experiment. The effect of alkali activated slag curing agent on curing silt was verified. The research results can provide technical support for highway construction in silt area of the Yellow River alluvial plain.

Keywords

Acknowledgement

This work was supported by the Young Experts of Taishan Scholar Project of Shandong Province (No. tsqn202103163), the National Natural Science Foundation of China (No. 52078278, No. 51778345), and the program of Qilu Young Scholars of Shandong University. Great appreciation goes to the editorial board and the reviewers of this paper.

References

  1. Abdila, S.R., Abdullah, M.M., Ahmad, R., Nergis, D.D.B., Rahim, R.S.A., Omar, M.F., Sandu, A.V. and Vizureanu, P. (2022). "Potential of soil stabilization using Ground Granulated Blast Furnace Slag (GGBFS) and fly ash via geopolymerization method: A review", Mater., 15(1), 375. http://doi.org/10.3390/ma15010375.
  2. Feng, R.F., Zhang, Q.Q. and Liu, S.W. (2020). "Experimental study of the effect of excavation on existing loaded piles", J. Geotech. Geoenviron., 146(9), 04020091. http://doi.org/10.1061/(ASCE)GT.1943-5606.0002336.
  3. Gu, K., Jin, F., Al-Tabbaa, A., Shi, B., Liu, C. and Gao, L. (2015), "Incorporation of reactive magnesia and quicklime in sustainable binders for soil stabilization", Eng. Geol., 195, 53-62. http://doi.org/10.1016/j.enggeo.2015.05.025.
  4. JTG 3430-2020 (2020), Test methods of soils for highway engineering, Ministry of Transport of the People's Republic of China; Beijing, China.
  5. JTG D30-2019 (2019), Specifications for Design of Highway Subgrade, Ministry of Transport of the People's Republic of China; Beijing, China.
  6. Jumassultan, A., Sagidullina, N., Kim, J., Ku, T. and Moon, S.W. (2021) "Performance of cement-stabilized sand subjected to freeze-thaw cycles", Geomech. Eng., 25(1), 41-48. https://doi.org/10.12989/gae.2021.25.1.041.
  7. Keramatikerman, M., Chegenizadeh, A. and Nikraz, H. (2016), "Effect of GGBFS and lime binders on the engineering properties of clay", Appl. Clay Sci., 132(1), 722-730. http://doi.org/10.1016/j.clay.2016.08.029.
  8. Liu, S.W., Zhang, Q.Q. and Feng, R.F. (2021), "Model test study on bearing capacity of non-uniformly arranged pile groups", Int. J. Geomech., 21(10), 04021200. http://doi.org/10.1061/(ASCE)GM.1943-5622.0002181.
  9. Lo, S.R. and Wardani, S.P. (2002), "Strength and dilatancy of a silt stabilized by a cement and fly ash mixture", Can. Geotech. J., 39(1), 77-89. http://doi.org/10.1139/T01-062.
  10. Mleza, Y. and Hajjaji, M. (2012), "Microstructural characterisation and physical properties of cured thermally activated clay-lime blends", Constr. Build. Mater., 26(1), 226-232. https://doi.org/10.1016/j.conbuildmat.2011.06.014.
  11. Qin, L.S. and Zheng, J.L. (2001), "Analysis of surficial failure mechanism of expansive soil slops with FEM", China J. Highw. Transp., 14(1), 25-30. http://doi.org/10.19721/j.cnki.1001-7372.2001.01.006.
  12. Shand, M.A. (2006), The chemistry and technology of magnesia. Wiley & Sons, New Jersey.
  13. Sharma, A.K. and Sivapullaiah, P.V. (2016), "Ground granulated blast furnace slag amended fly ash as an expansive soil stabilizer", Soils Found., 56(2), 205-212. http://doi.org/10.1016/j.sandf.2016.02.004.
  14. Thomas, A., Tripathi, R.K. and Yadu, L.K. (2018). "A laboratory investigation of soil stabilization using enzyme and alkali-activated ground granulated blast-furnace slag", Arab. J Sci. Eng., 43(10), 5193-5202. https://doi.org/10.1007/s13369-017-3033-x.
  15. Thomas, G. and Rangaswamy, K. (2020), "Strengthening of cement blended soft clay with nano-silica particles", Geomech. Eng., 20(6), 505-516. https://doi.org/10.12989/gae.2020.20.6.505.
  16. Wang, Z.J., Weng, Y.L. and Du, S.W. (2006), "Theoretical analysis and field performance of silt soil reinforced with slag powder", J. Eng. Geo., 14(5), 709-714. http://doi.org/1004-9665/2006/14(05)-0709-06(in Chinese with English Abstract). 1004-9665/2006/14(05)-0709-06
  17. Xiao, J.H., Liu, J.K., Peng, L.Y. and Chen, L.H. (2008), "Effects of compactness and water Yellow-River alluvial silt content on its mechanical behaviors", Rock Soil Mech., 29(2), 409-414. http://doi.org/10.16285/j.rsm.2008.02.043(in Chinese with English Abstract).
  18. Xu, D.S. (2010). "Research on mechanical characteristics and strengthen method of silt in Yellow River delta", Master's thesis of Institute of Rock & Soil Mechanics Chinese Academy of Sciences, China. (in Chinese with English Abstract).
  19. Yao, Z.Y., Lian, J.J., Ai, Y.Z. and Shang, Q.S. (2007), "Compaction properties on Yellow River silty soil stabilized with lime-flyash", Chin. J. Geotech. Eng., 29(5), 664-670. http://doi.org/1000-4548(2007)05-0664-07(in Chinese with English Abstract). 1000-4548(2007)05-0664-07
  20. Yi, Y.L., Gu, L.Y. and Liu, S.Y. (2015), "Microstructural and mechanical properties of marine soft clay stabilized by lime-activated ground granulated blastfurnace slag". Appl. Clay. Sci., 103, 71-76. http://doi.org/10.1016/j.clay.2014.11.005.
  21. Zabihi, S.M. and Tavakoli, H.R. (2019), "Evaluation of monomer ratio on performance of GGBFS-RHA alkali-activated concretes", Constr. Build. Mater., 208, 326-332. http://doi.org/10.1016/j.conbuildmat.2019.03.026.
  22. Zehra, T. and Kaseem, M. (2022), "Recent advances in surface modification of plasma electrolytic oxidation coatings treated by non-biodegradable polymers", J. Mol. Liq., 365, 120091. https://doi.org/10.1016/j.molliq.2022.120091.
  23. Zhou, F., Sun, W.B., Shao, J.L., Kong, L.J. and Geng, X.Y. (2020) "Experimental study on nano silica modified cement base grouting reinforcement materials", Geomech. Eng., 20(1), 67-73. https://doi.org/10.12989/gae.2020.20.1.067.