Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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Setting Time and Compressive Strength Gains of Glycocalix Coating Materials with Silica-based Accelerating Agents

실리케이트계 급결제를 혼입한 글라이코 캘릭스 코팅재의 응결시간 및 압축강도 발현 특성

  • Jeong, Yun-Ji (Depart. Architectural Engineering, Graduate School, Kyonggi University) ;
  • Yoon, Hyun-Sub (Depart. Architectural Engineering, Graduate School, Kyonggi University) ;
  • Yang, Keun-Hyeok (Depart. Architectural Engineering, Graduate School, Kyonggi University)
  • Received : 2019.12.30
  • Accepted : 2020.03.19
  • Published : 2020.03.30
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Abstract

The present study examined the effect of the silica-based accelerating agents on the setting time and compressive strength gain of biomimetic glycocalix coating materials that has been developed for protecting the substrate of concrete exposed to chemical and microbiological attacks. The accelerating agent contents varied from 10mL/L to 40mL/L in the mixtures of glycocalix coating materials determined for shotcrete and lining techniques. Test results showed that the setting time of coating materials containing accelerating agents was affected by the contents of the bacteria carrier. When the accelerating agent content was 40mL/L, the final setting time was 80 minutes for shotcrete mixtures and 318 minutes for lining mixtures. Meanwhile, the compressive strength gain of coating materials with accelerating agents tended to be lower than that of counterpart materials without accelerating agents.

이 연구에서는 화학적 열화 및 생물학적 열화에 노출된 콘크리트의 보호를 위해 개발된 글라이코 캘릭스(glycocalix) 코팅재의 응결속도 및 압축강도 발현에 대한 실리케이트계 급결제 혼입의 영향을 검토하였다. 글라이코 캘릭스 코팅재의 적용처에 따라 제안된 단면 뿜어 붙이기용 및 라이닝 공법용 코팅재 배합에서 실리케이트계 급결제의 첨가량을 10mL/L, 25mL/L 및 40mL/L로 변화하였다. 글라이코 캘릭스 코팅재의 경화속도는 박테리아 고정화 재료 양에 의해서도 영향을 받았는데, 40mL/L의 급결제를 첨가한 단면 뿜어 붙이기 및 라이닝 공법용 배합의 종결시간은 각각 80분 및 318분이었다. 급결제를 첨가한 글라이코 캘릭스 코팅재의 강도 발현은 급결제 첨가량이 증가함에 따라 일반 코팅재에 비해 낮은 결과를 보였다.

Keywords

References

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