Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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Fresh and Strength Properties of Mortar Produced with Recycled Cactus Stem Powder

자원순환형 선인장 줄기 분말을 혼입한 모르타르의 굳지 않은 특성과 강도

  • Kim, Hyo-Jung (Department of Civil Engineering, Chungnam National University) ;
  • Kwon, Ki-Seong (Department of Civil Engineering, Chungnam National University) ;
  • Lee, Ka-Youn (Department of Horticultural Science, Chungnam National University) ;
  • Lee, Geung-Joo (Department of Horticultural Science, Chungnam National University) ;
  • Kim, Yun-Yong (Department of Civil Engineering, Chungnam National University)
  • Received : 2020.08.21
  • Accepted : 2020.09.22
  • Published : 2020.09.30
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Abstract

In this study, in order to recycle the stems of opuntia cactus discarded after harvesting the fruit, the cactus stems were powdered and applied as a cement-based admixture. The powder of cactus stem was mixed into the mortar, and its effect on the fresh properties and strength of the mortar was studied. The results were compared with the properties of mortars produced by mixing with a retarder sugar and a viscosity agent methyl-cellulose, which are conventional saccharide-based admixtures. Based on the test results, the cactus stem powder did not clearly show the effect as a retarding agent, whereas the flow and the air content were similar to those of the mortar mixed with methyl-cellulose. This indicated that the cactus stem powder can be used as a viscosity agent. It was found that the strength of the mortar tended to increase when the mixing ratio of the cactus stem powder was lower than 0.3%.

본 연구에서는 열매를 수확한 후 폐기되는 손바닥 선인장 줄기를 재활용하기 위하여 선인장 줄기 분말을 시멘트계 재료의 혼화제로 적용하고자 하였다. 이를 위해 선인장 줄기 분말을 혼입한 모르타르의 굳지 않은 특성과 강도에 대한 연구를 수행하였다. 또한 그 결과를 기존의 당류계 혼화제인 지연제 설탕과 증점제 메틸셀룰로오스를 혼입한 모르타르의 특성과 비교하였다. 연구 결과, 선인장 줄기 분말은 지연제로서 효과를 뚜렷하게 보여주지 못하였다. 반면, 선인장 줄기 분말 혼입율이 증가할수록 플로 및 공기량이 메틸셀룰로오스를 혼입한 모르타르와 유사한 경향을 나타내어 증점제로서 활용 가능성을 확인하였다. 또한 선인장 줄기 분말의 혼입율이 0.3% 이내일 때에는 모르타르의 강도가 증가하는 것으로 나타났다.

Keywords

References

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