Journal of the Korean Geosynthetics Society (한국지반신소재학회논문집)

Korean Geosynthetics Society (한국지반신소재학회)
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Evaluation of Engineering Properties in Synthetic Polymer-Silica Sol Grout

합성폴리머 실라카졸 그라우트의 공학적 특성 평가

  • Received : 2022.08.16
  • Accepted : 2022.09.07
  • Published : 2022.09.30
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Abstract

The engineering characteristics of synthetic polymer-silica sol, which has the effect of reducing leakage, was evaluate and compared with typical grouting material, the water glass-based SGR injection material in this study. The result of the laboratory tests on strength and durability about the synthetic polymer-silica sol showed more than twice as high as LW-based injection materials in uniaxial compressive strength, significantly lower values in shrinkage rate and permeability. The result of pH was less than 8.5 (the drinking water quality standard). As a result of the leaching test, the Na2O elution amount of the synthetic polymer-silica sol was measured to be 3 to 4 times smaller than that of the water glass grout. These results be assumed that the synthetic polymer-silica sol has better durability and permeability than those of the typical water glass-based grout.

본 연구에서는 용탈 저감 효과가 있는 합성폴리머 실리카졸의 그라우트 성능을 평가하고, 기존 물유리계 SGR 주입재와 비교한 내용을 다루었다. 강도 및 내구성에 대한 실내실험 결과 합성폴리머 실리카졸는 물유리계 주입재 대비 2배 이상 높은 일축압축강도, 수축률 및 투수성에서 현저히 낮은 값을 보여주었고, pH는 먹는 물 수질기준인 8.5 이하였다. 용탈시험결과 합성폴리머 실리카졸의 Na2O 용출량은 물유리계 주입재 대비 3~4배 작게 측정되었다. 이러한 결과로 보아 합성폴리머 실리카졸은 기존 물유리계 주입재보다 더 우수한 내구성 및 차수성을 가지는 것으로 판단된다.

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References

  1. ASTM. (2016), "Standard Test Methods for Measurement of Hydraulic Conductivity of Saturated Porous Materials Using a Flexible Wall Permeameter", ASTM D 5084, pp.1-26.
  2. Chun, B. S. (2011), "Principles and Practice for Chemical Grouting", Goomibook, Republic of Korea, pp.41-282.
  3. Jang, Y. G., Kim, S. G. and Kang, I. J. (2016), "Application of Non-Alkaline Silica Sol Grouting Method Considering the Eco-Friendliness", Journal of the Korean Geoenvironmental Society, Vol.17, No.9, pp.37-45. https://doi.org/10.14481/jkges.2016.17.9.37
  4. Jo, S. Y., Yun, J. C. and Kim, G. C. (2015), "Construction Methods and Construction Case of Grout (CSS) Using Non-Alkaline Silica Sol", Geotechnical Engineering, Vol.31, No.8, pp.12-24.
  5. Kim, S. K. (2017), "Environmental Effectiveness of the PCF Chemical Grouting Method Applied in Construction", Ph.D Thesis, Pusan National University.
  6. Kim, S. H., Kim, T. K., Choi, J. I. and Yim, K. W. (2010), "A Study on the Injection Efficiency and Strength for Grouting Method", Journal of the Korean Geotechnical Society, Vol.26, No.9, pp.47-58. https://doi.org/10.7843/KGS.2010.26.9.47
  7. Lee, B. H., Kim, Y. H. and Chun, B. S. (2010), "Environmental Impact Review and Improvement of Durability of Silicasolcement Grout Material", Journal of the Korean Geoenvironmental Society, Vol.11, No.12, pp.13-18.
  8. Ryu, Y. S. (2008), "Environmental Effectiveness of the PCF Chemical Grouting Method Applied in Construction", Master's Thesis, Hanyang University.
  9. Sogaard, C., Funehag, J. and Abbas, Z. (2018), "Silica Sol as Grouting Material: a Physio-Chemical Analysis", Nano Convergence, Vol.5, No.6, pp.1-15 https://doi.org/10.1186/s40580-017-0133-y
  10. Yang, H. C., Kim, G. H., Kim, B. S., Kim, S. H. and Kim, Y. S. (2012), "Grouting Environmental Engineering", Goomibook, Republic of Korea, pp.67-117.