Evaluation of Engineering Properties in Synthetic Polymer-Silica Sol Grout

Seong-Min Jang; Hyuk-Sang Jung; Jeong-Han Kim; Byung-Chan Min; Byeong-Seok Lee

doi:10.12814/jkgss.2022.21.3.029

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2022 Vol.21, Issue 3 Preview Page Next Page

Research Article

Evaluation of Engineering Properties in Synthetic Polymer-Silica Sol Grout 합성폴리머 실라카졸 그라우트의 공학적 특성 평가

30 September 2022. pp. 29-39

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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.

Keywords

Synthetic Polymer-Silica Sol

Grout material

SGR(Space Grouting Rocket System)

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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Information

Publisher :Korean Geosythetics Society
Publisher(Ko) :한국지반신소재학회
Journal Title :Journal of the Korean Geosynthetics Society
Journal Title(Ko) :한국지반신소재학회 논문집
Volume : 21
No :3
Pages :29-39
Received Date : 2022-08-16
Revised Date : 2022-09-01
Accepted Date : 2022-09-07
DOI :https://doi.org/10.12814/jkgss.2022.21.3.029

Journal of the Korean Geosynthetics Society ISSN:2508-2876(Print) 2287-9528(Online) 한국지반신소재학회 논문집

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