Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Preventing Carbonation of High-volume SCM Concrete by Painting Emulsified Refined Cooking Oil

정제식 식용유 도포에 의한 혼화재 다량치환 콘크리트의 탄산화 억제

  • Received : 2015.09.03
  • Accepted : 2015.11.24
  • Published : 2015.11.30
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Abstract

The aim of this research is to suggest the carbonation preventing method of concrete by using surface painting substances. As the tested concrete cases, Plain mixture of 100 % of OPC, FA30, and BS60, for the concrete mixtures incorporating 30 % of fly ash, and 60 % of blast furnace slag, respectively. As the control factors, application on the concrete surface, and two-different types of painting substances were used: emulsion pain (EP), and refined cooking oil (RCO). As the test results, FA30 showed the fastest carbonation was shown while Plain mixture showed the slowest carbonation. The carbonation depth was increased with age for regardless the mixtures, but RCO showed the most outstanding performance of carbonation prevention. Namely, for 28 weeks of age, applying RCO showed approximately 46, 28, and 34 % of carbonation preventing performance for Plain mixture, FA30, and BS60, respectively, while applying EP showed approximately 13 % in average for all concrete mixtures. Therefore, it is considered that RCO has a favorable performance of preventing carbonation of concrete.

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References

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