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2019 Vol.6, Issue 4 Preview Page

Original Article

The Analysis of Effect of Biopolymer Treated Soils in Seed Spray Method in the River Embankment

제방 녹화공법에서 바이오폴리머 처리토의 효능 분석

Seunghwan Seo1
,
Seungnam Jin2
,
Ilhan Chang3
,
Moonkyung Chung4*
서 승환1
,
진 승남2
,
장 일한3
,
정 문경4*
1Research Specialist, Department of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology, Goyang 10223, Korea
2Researcher, Eco n Geo, Incheon 22170, Korea
3Senior Lecturer, School of Engineering and Information Technology, University of New South Wales, Canberra, ACT 2600, Australia
4Vice President, Korea Institute of Civil Engineering and Building Technology, Goyang 10223, Korea
1한국건설기술연구원 인프라안전연구본부 전임연구원
2수생태공간정보연구소 연구원
3University of New South Wales School of Engineering and Information Technology Senior Lecturer
4한국건설기술연구원 연구부원장
* Corresponding Author
31 December 2019. pp. 304-313
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Abstract

Biopolymer based on microbial β-glucan and xanthan gum is effective for vegetation and has a function of enhancing soil strength, which can be used as soil reinforcement and stabilization materials in river embankment. The purpose of this study is to verify the vegetation effect of the surface of levee by biopolymer with seed spraying method. Mixed soils with biopolymer were used to cover the surface of embankments. The strength is higher in biopolymer-treated soil and xanthan gum based biopolymer has advantage for quality control in field scale. In addition, the vegetation of F. arundinacea and L. perenne showed various reactions with types of biopolymers. Biopolymer has a positive effect on the vegetation of them. In contrast, root growth tended to decrease in biopolymer-treated soils. The results indicate that root growth is slow down due to increasing ability to retain water in biopolymer-treated soil. In order to apply biopolymer to river embankment, it is necessary to examine the effects of biopolymers on a wide range of plant species in river embankment.

Keywords
Biopolymer
Field test
Seed spray
Vegetation

미생물 유래 베타글루칸과 잔탄검 계열의 바이오폴리머는 식물 성장에 효과적이고 토양의 강도를 증진시키는 기능을 지니고 있어 하천 제방의 토양 보강 및 안정화 재료로서 활용이 가능하다. 본 연구의 목적은 분사 공법을 이용하여 바이오폴리머 신소재를 실규모 제방에 시공하는 경우 바이오폴리머에 의해 하천 제방 표면 토양의 강도 증진 및 식생 효과를 검증하는 것이다. 실규모 하천제방에서 바이오폴리머를 이용하여 제방 표면을 피복하였고, 혼합재료에 대한 강도 측정 결과 바이오폴리머를 처리한 구역에서 강도가 높게 나타났다. 그리고 큰김의털과 호밀풀을 대상으로 식물 생장을 조사하였으며, 두 식물종의 지상부 생장에 긍정적인 효과를 확인하였다. 반면 대상 식물종의 지하부 생장은 바이오폴리머가 처리된 토양에서 감소하는 경향을 보였다. 바이오폴리머를 처리한 토양에서는 토양이 수분을 보유하는 능력이 증가하여 바이오폴리머로 처리로 인해 오히려 지하부 성장을 더디게 하는 것으로 판단된다. 본 연구의 결과에 따라 분사공법을 이용한 바이오폴리머 시공은 토양의 강도 증진 효과와 하천 제방의 녹화에 사용하기 충분한 것으로 판단된다. 그러나 하천 제방에 식재하는 광범위한 식물 종에 대한 바이오폴리머의 효과와 식물 종 별로 적정 바이오폴리머 농도에 대한 연구가 필요할 것이다.

키워드
바이오폴리머
현장시험
분사공법
식생
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Information
  • Publisher :Korean Society of Ecology and Infrastructure Engineering
  • Publisher(Ko) :응용생태공학회
  • Journal Title :Ecology and Resilient Infrastructure
  • Journal Title(Ko) :응용생태공학회 논문집
  • Volume : 6
  • No :4
  • Pages :304-313
  • Received Date : 2019-12-11
  • Revised Date : 2019-12-19
  • Accepted Date : 2019-12-23
  • DOI :https://doi.org/10.17820/eri.2019.6.4.304
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