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Modified Sulfur Distribution and Compressive Strength Characteristics of Modified Sulfur Mortar Based on the Mixing Method and Curing Condition

비빔방법과 양생조건에 따른 개질유황 모르타르의 개질유황 분포도 및 압축강도 특성

  • Jung, Byeong-Yeol (Department of Architectural Engineering, Hanbat National University) ;
  • Lee, Sang-Soo (Department of Architectural Engineering, Hanbat National University) ;
  • Song, Ha-Young (Department of Architectural Engineering, Hanbat National University)
  • Received : 2013.10.14
  • Accepted : 2013.12.16
  • Published : 2014.02.20

Abstract

As industry advances, the production of industrial sulfur is increasing every year. Therefore, this study intended to investigate the modified sulfur distribution and compressive strength characteristics of modified sulfur mortar based on the mixing method and curing conditions by adding modified sulfur with a melting point of approximately $65^{\circ}C$ in order to provide basic data for the application of the modified sulfur to the mortar or concrete. The results of the experiment showed that the mixture of fine aggregate and cement with water, followed by the addition of modified sulfur, would be most advantageous in terms of fluidity and strength. The results of EDS analysis also showed that the distribution of sulfur was the best. In terms of the curing conditions, the highest compressive strength was achieved through water curing and air dry curing at $20^{\circ}C$. However, it was found that the long-term strength was adversely affected by curing at over $40^{\circ}C$.

산업의 발달로 인하여 매년 공업용 유황의 생산량은 증가하는 추세이다. 따라서 본 연구에서는 융점이 약 $65^{\circ}C$인 개질유황을 모르타르에 첨가하여 비빔방법 및 양생조건에 따른 개질유황 모르타르의 분포도 및 강도특성을 연구함으로써 개질유황을 모르타르 또는 콘크리트 활용방안에 대한 기초자료로 활용하고자 하였다. 실험결과, 비빔방법에서는 잔골재, 시멘트를 비빔한 뒤 물을 넣고 비비고 마지막으로 개질유황을 첨가하는 방법이 유동성과 강도면에서 가장 유리한 것으로 사료되며, EDS분석을 통한 유황의 분포도 또한 가장 좋은 것으로 나타났다. 양생조건에서는 수중양생과 기건양생 $20^{\circ}C$에서 가장 높은 압축강도를 발현한 것으로 나타났으며, $40^{\circ}C$이상의 양생을 할 경우 장기강도에서 악 영향을 미치는 것으로 나타났다.

Keywords

References

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