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Preliminary Tests of Mortars Containing Magnetite as Fine Aggregate

자철석 혼입 모르터의 기초물성 연구

  • Received : 2012.12.06
  • Accepted : 2013.01.14
  • Published : 2013.05.30

Abstract

In this project a preliminary experimental research work was done to apply mortars containing magnetite as fine aggregates unto floor finishing materials in order to make indoor environment eco-friendly and to have noiseproof control between floors. Crushed magnetites were substituted as sands in the mix design with a range of 0, 20, 40, 60, 100%. First far-infrared radiation tests to determine emissivity and emission power were done in accordance with the KICM test standard and an outstanding result was obtained. Density and compressive strength test results also showed that as the substitution increases, test values increase in a linear trend. However dry shrinkage test results revealed that as the substitution increases, shrinkage strain also increases. To clearly seek a solution about this problem, more experimental works should be done on oncoming experimental program.

본 연구에서는 원적외선의 방출을 증진시켜 쾌적한 실내 환경을 조성시키며 아울러 비중이 높은 재료를 사용하여 층간소음을 저감시키기 위한 방안으로서 건축용 친환경 바닥 마감재에 자철석 잔골재를 사용하는 모르터의 기초물성 연구를 수행하였다. 실험에 사용된 모르터의 배합은 자철석 잔골재를 자연사로 0, 20, 40, 60, 100% 치환하였다. 먼저 원적외선 방출성능으로서 방사율과 방사에너지를 측정하여 KICM의 기준을 훨씬 상회하는 결과를 얻었다. 단위용적질량 압축강도 실험결과 치환율이 증가함에 따라 선형적으로 증가하는 결과를 얻었다. 그러나 건조수축 시험결과 자철석 잔골재의 치환율이 증가함에 따라 건조수축 변화율이 기준 시험체 대비 급격하게 증가하는 것으로 나타나 향후 이를 해결하기 위한 방안이 강구되어야 함을 알 수 있었다.

Keywords

References

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