Journal of the Korea institute for structural maintenance and inspection (한국구조물진단유지관리공학회 논문집)

Korea Institute for Structural Maintenance Inspection (한국구조물진단유지관리공학회)
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Durability and Bioassay of a Sulfur Polymer Surface Protecting Agent for Concrete Structures

콘크리트 구조물용 유황폴리머 표면보호재의 내구성능 및 생물독성

  • 석병윤 (GS건설 인프라사업본부) ;
  • 이병재 ((주)제이엔티아이엔씨 기술연구소) ;
  • 김윤용 (충남대학교 토목공학과)
  • Received : 2015.04.13
  • Accepted : 2015.06.18
  • Published : 2015.11.01
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Abstract

In this study, to examine the use of sulfur polymer as a coating agent for concrete, durability and hazard evaluations were performed. The result of the evaluation indicated that the chemical resistance of the coating agent for concrete was outstanding against acidic, base, and alkaline solutions. The evaluation of the bond strength after an accelerated weathering test depending on the mixing condition indicated that the most outstanding strength characteristic was obtained when silica powder and fly ash were mixed at the same time. The bond strength exceeded 1 MPa in every mixing condition even after the repeated hot and cold treatment of the coating agent specimen for concrete, and the SFS mix proportion showed the highest bond strength. The examination of the accelerated carbonation and chloride ion penetration resistance of the concrete coated with the coating agent indicated that the specimen coated with the coating agent using silica powder as a filler showed the most outstanding durability. When a fish toxicity test was performed to examine the hazard of the use of the functional polymer as a coating agent for concrete, the functional polymer was found to have no effect on the organisms. When the chemical resistance, freezing and thawing resistance, carbonation, and chloride ion penetration resistance of the coating agent were considered, substituting silica powder and fly ash as the fillers of the functional polymer by 20%, respectively, was the optimal level in the range of this study.

본 연구에서는 유황을 폴리머화하여 콘크리트 표면보호재로 활용가능성을 검토하기 위하여 내구성능 및 생물독성 평가를 실시하였다. 평가 결과, 콘크리트 표면보호재의 내화학성능은 산, 알칼리 용액에 대하여 화학저항성이 우수한 것으로 나타났다. 배합조건별 촉진내후성 실험 후 부착강도평가 결과 규사분말 및 플라이애시를 동시에 혼합한 배합에서 가장 우수한 강도특성을 나타내었다. 콘크리트용 표면보호재 시험체의 온냉반복 후에도 모든 배합조건에서 부착강도 1 MPa을 상회하였고, SFS배합에서 가장 높은 부착강도를 나타내었다. 표면보호재를 도포한 콘크리트의 촉진탄산화 및 염소이온침투저항성을 검토한 결과, 규사분말을 채움재로 사용한 표면보호재를 도포한 시험체에서 가장 우수한 내구성능을 나타내었다. 유황폴리머를 콘크리트 표면보호재로 사용시 생물독성 검토를 위해 어독성 실험을 수행한 결과, 유황폴리머는 생물에 미치는 영향은 없는 것으로 나타났다. 표면보호재의 내화학성, 동결융해저항성, 탄산화, 염소이온침투저항성 등을 모두 고려하여 볼 때, 본 연구범위에서는 유황폴리머에 채움재로서 규사분말과 플라이애시를 각각 20%씩 대체하는 것이 적절한 수준인 것으로 판단된다.

Keywords

References

  1. Ministry of knowledge economy,"Supply and demand situation of mineral produce in 2011", Korea institute of geoscience and mineral resources, 2012, pp.119-120.
  2. Jung, B. Y., Lee, S. S., Song, H. Y., Modified Sulfur Distribution and Compressive Strength Characteristics of Modified Sulfur Mortar Based on the Mixing Method and Curing Condition, Journal of the Korea Institute of Building Construction, Vol. 14, No. 1, (2014) pp. 61-67. https://doi.org/10.5345/JKIBC.2014.14.1.061
  3. Milica M. Vlahovic, Predrag B. Jovanic, Sanja P. Martinovic, Tamara D. Boljanac, Tatjana D. Volkov-Husovic, "Quantitative evaluation of sulfur-polymer matrix composite quality", Composites Part B: Engineering, Vol.44, Issue1, (2013), pp. 458-466. https://doi.org/10.1016/j.compositesb.2012.04.005
  4. William, C., McBee, Direct substitution of sulfur for asphalt in paving materials, U.S. Bureau of Mines, (1978).
  5. Milica M. Vlahovic, Sanja P. Martinovic, Tamara Dj. Boljanac, Predrag B. Jovanic, Tatjana D. Volkov-Husovic, "Durability of sulfur concrete in various aggressive environments", Construction and Building Materials, Vol.25, Issue 10, (2011), pp. 3926-3934 https://doi.org/10.1016/j.conbuildmat.2011.04.024
  6. Mariusz Ksiazek, "The intensity of corrosion processes influenced by tensile stress for reinforcing steel covered with sulphur polymer composite applied as industrial waste material", Composites Part B: Engineering, Vol.45, Issue1, (2013), pp.1126-1132. https://doi.org/10.1016/j.compositesb.2012.04.072
  7. Lee, B. J., Lee, E. S., Chung, W. J., Kim, Y. Y., Efficiency Test for Surface Protecting Agents for the Chemical Resistance of Concrete Structures using Sulfur Polymers, Magazine of the Korea Institute for Structural Maintenance and Inspection, Volume 18, No. 5. (2014) pp.1-8.
  8. Guide for mixing and placing sulfur concrete in construction, Report 548.2R-93. ACI Committee 548 (American Concrete Institute), Farmington Hills, MI; 1993.
  9. Mohamed AMO, El Gamal MM. Sulfur concrete for the construction industry-A sustainable development approach. J. Ross Publishing; (2010).
  10. Lee, B. J., Lee, E. S., Kim, S. G., Kim, Y. Y., Strength Development of Sulfur-Polymer-Based Concrete Surface Protecting Agents Depending on Curing Condition and Hazard Assessment of Sulfur Polymers, Magazine of the Korea Institute for Structural Maintenance and Inspection, Volume 19, No. 1. (2015) pp.139-146.