Smart Structures and Systems

  • 제34권1호
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  • Pages.51-62
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  • 2024
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Pore network approach to evaluate the injection characteristics of biopolymer solution into soil

  • Jae-Eun Ryou (School of Civil Engineering, Chungbuk National University) ;
  • Beomjoo Yang (School of Civil Engineering, Chungbuk National University) ;
  • Won-Taek Hong (Department of Civil Environmental Engineering, Gachon University) ;
  • Jongwon Jung (School of Civil Engineering, Chungbuk National University)
  • 투고 : 2024.05.12
  • 심사 : 2024.08.21
  • 발행 : 2024.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

Application of biopolymers to improve the mechanical properties of soils has been extensively reported. However, a comprehensive understanding of various engineering applications is necessary to enhance their effectiveness. While numerous experimental studies have investigated the use of biopolymers as injection materials, a detailed understanding of their injection behavior in soil through numerical analyses is lacking. This study aimed to address this gap by employing pore network modeling techniques to analyze the injection characteristics of biopolymer solutions in soil. A pore network was constructed from computed tomography images of Ottawa 20-30 sand. Fluid flow simulations incorporated power-law parameters and governing equations to account for the viscosity characteristics of biopolymers. Agar gum was selected as the biopolymer for analysis, and its injection characteristics were evaluated in terms of concentration and pore-size distribution. Results indicate that the viscosity properties of biopolymer solutions significantly influence the injection characteristics, particularly concerning concentration and injection pressure. Furthermore, notable trends in injection characteristics were observed based on pore size and distribution. Importantly, in contrast to previous studies, meaningful correlations were established between the viscosity of the injected fluid, injection pressure, and injection distance. Thus, this study introduces a novel methodology for integrating pore network construction and fluid flow characteristics into biopolymer injections, with potential applications in optimizing field injections such as permeation grouting.

키워드

과제정보

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIT), (2022R1A4A3029737) (RS-2024-00353644).

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