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2023 Vol.24, Issue 9
Erosion Characteristics of TGase-added Biopolymers

TGase 첨가 바이오폴리머의 침식특성 연구

Kanghyun Kim1
,
Seunghyun Kim2
,
Dohee Kim3
,
Jongho Shin4*
김 강현1
,
김 승현2
,
김 도희3
,
신 종호4*
1Post Doctor, Department of Civil and Environmental Engineering, Konkuk University
2Ph.D Student, Department of Civil and Environmental Engineering, Konkuk University
3MS Student, Department of Civil and Environmental Engineering, Konkuk University
4Professor, Department of Civil and Environmental Engineering, Konkuk University
*Corresponding Author
1 September 2023. pp. 5-13
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Abstract

Cement-based reinforcement materials, which are representative slope reinforcement materials, can cause contamination of ground and groundwater when ground injection or surface application is applied. Accordingly, slope reinforcement materials using eco-friendly biopolymers are attracting attention as a means of replacing existing materials, but the biopolymers currently used are easily dissolved when exposed to groundwater or rainfall environments, reducing strength. In order to solve this problem, the cross-linking of protein between sodium casein and Transglutaminase (TGase, C20H16N4O2S2) was used to increase the water resistance of biopolymers, and a rainfall slope test was conducted to evaluate their usability and applicability as a slope reinforcing material. In the case of reinforcement with only sodium casein, the precipitation dissolved sodium casein, and the slope was completely destroyed in 1 hour. On the other hand, it was observed that the slope reinforced by adding a small amount of TGase (0.5%) do not collapse even after 80 hours of rainfall duration due to increased water resistance. Strength and water resistance increases due to the addition of a small amount of TGase, and its applicability as an eco-friendly reinforcement is confirmed.

Keywords
Rainfall slope test
Biopolymer
Erosion
Water resistance

대표적 사면 보강재료인 시멘트 계열의 보강재는 지반주입 또는 지표 도포 시 지반 및 지하수의 오염이 발생할 수 있다. 이에 따라 친환경 바이오폴리머를 사용한 사면 보강재료가 기존의 재료를 대체할 수단으로 관심받고 있으나, 현재 사용되고 있는 바이오폴리머는 지하수 또는 강우 환경에 노출되면 쉽게 용해되어 강도가 감소되는 문제가 있다. 이러한 문제를 해결하기 위하여 본 연구에서는 카제인나트륨과 Transglutaminase(TGase, C20H16N4O2S2)의 단백질 교차결합을 이용하여 바이오폴리머의 내수성을 증가시켰으며, 사면 보강재료로서 사용성과 적용성을 평가하기 위해 강우사면시험을 수행하였다. 카제인나트륨만으로 보강한 경우 강우로 인해 카제인나트륨이 용해되어 1시간 만에 사면이 완전히 파괴되었다. 반면 TGase를 소량(0.5%) 첨가하여 보강한 사면은 내수성이 증가하여 강우 지속시간 80시간이 지나도 붕괴되지 않음을 관찰하였다. TGase 소량 첨가로 인한 강도 및 내수성 증가가 나타났으며, 친환경 보강재로서의 적용성을 확인하였다.

키워드
강우 사면시험
바이오폴리머
침식
내수성
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Information
  • Publisher :Korean Geo-Environmental Society
  • Publisher(Ko) :한국지반환경공학회
  • Journal Title :Journal of the Korean Geo-Environmental Society
  • Journal Title(Ko) :한국지반환경공학회 논문집
  • Volume : 24
  • No :9
  • Pages :5-13
  • Received Date : 2023-04-27
  • Revised Date : 2023-05-08
  • Accepted Date : 2023-08-09
  • DOI :https://doi.org/10.14481/jkges.2023.24.9.5
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