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Development of Eco-Block for Grass Growth based on Expanded Vermiculite Absorbing Bacteria

박테리아 흡착 팽창질석 기반 친생태 잔디블록의 개발

  • 윤현섭 (경기대학교 일반대학원 건축공학과) ;
  • 정승배 (경기대학교 일반대학원 건축공학과) ;
  • 양근혁 (경기대학교 플랜트.건축공학과) ;
  • 이상섭 (경기대학교 생명과학과) ;
  • 이재영 ((주)그랜드코단)
  • Received : 2016.09.05
  • Accepted : 2016.09.21
  • Published : 2016.09.30

Abstract

This study developed an eco-block for grass growth using the expanded vermiculites that absorb bacteria selected considering for the high pH and dry environments and plant growth. For the developed eco-block, a fundamental properties including compressive strength gain and water absorption and ecology characteristics were tested. The selected bacteria was Bacillus alcalophilus a nd Rhodoblastus acidophilus and had high concentration of $10^9cell/mL$. The expanded vermiculite that was used for shelter of bacteria was added by 7.5% and 10% replacement of the natural aggregates by volume. The developed eco-block achieved the minimum requirements specified in SPS provision and significantly effective in reducing chemical Chemical Oxygen Demand(COD) concentration and enhancing the growth of fish and plant.

본 연구에서는 박테리아를 흡착한 팽창질석 기반의 친생태 잔디블록의 압축강도 발현과 흡수율 및 생태환경영향 평가를 실시하였다. 경화된 콘크리트의 극건조 환경 및 강알칼리성 환경에서 생장이 가능하며, 식물생장성 증대 효과를 갖는 Bacillus alcalophilus와 Rhodoblastus acidophilus를 $10^9cell/mL$로 배양하여 혼합 사용하였다. 배양이 완료된 박테리아는 생장처 제공을 위한 재료로서 팽창질석에 흡착하였으며, 이를 잔디블록 제조 시 골재의 체적 대비 7.5%와 10% 혼입하였다. 개발된 친생태 잔디블록은 압축강도와 흡수율은 KS 규격을 만족하면서, 수질의 COD 저감, 어류생장 및 식물생장증대에 효과를 보였다.

Keywords

References

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