DOI QR코드

DOI QR Code

An Evaluation on the Resistance Efficiency of Chloride Ion Infiltration of Offshore Concrete Si/Al Hybrid inorganic salt and Multi-Cyclonic Oligomer Condensate

Si/Al 복합 조성물과 다환형 올리고머 축합물을 혼입한 해양콘크리트의 내염해성 평가에 관한 실험적 연구

  • Received : 2014.09.04
  • Accepted : 2014.10.22
  • Published : 2014.11.30

Abstract

The reinforced concrete that is used in structures constructed in coastal resorts and areas is impacted by chloride-induced corrosion by chlorine ions. Corrosion damage to such structures is often visible in rust-staining of the surface and cracking and spalling of the cover concrete due to reinforcement as a result of expansive steel corrosion This research conducted chlorine injure resistance of marine environment by the Durability improving Agent(DA) mixed with oligomer condensate and Si/Al composition. The DA countervails the drying shrinkage of concrete and mortar, fixes the chlorine ion, and prevents the erosion from the sulfate ion. In the experiments of this study, the concrete having excellent resistibility against salt damage was produced by mixing the DA with the OPC replaced the blast furnace slag. The whole 4 mixtures including the one mixed only with the cement (OPC) and another one replaced the blast-furnace slag (BSC), and the other one mixed with the 0.3% and 1.0% DA were tested. In all conducted experiments, the excellent resistibility against salt damages and drying shrinkage were identified in the order of DA, BSC, and OPC.

Keywords

References

  1. C.B. Shin, "Modeling of chloride ion ingress in coastal concrete," Cem Conc Res, 32, 2002
  2. B. Martin-Perez, "A study of the effect of chloride binding on service life predictions," Cem Conc Res, 30, 2000
  3. Al-Amoudi, "Attack on plain and blended cements exposed to aggressive sulfate environments", Cem Conc Comp, 24, 2002
  4. Rasheeduzzafar, "Effect of tricalcium aluminate content of cement on chloride binding and corrosion of reinforcing steel in concrete," ACI Mat J , 89, 1992
  5. 김노동, "무기질 혼화재가 해양콘크리트의 염화물 고정화에 미치는 영향", 대한건축학회논문집, 30(6), 2014 https://doi.org/10.5659/JAIK_SC.2014.30.6.67
  6. 김기현, "신뢰성이론에 기반한 해양환경 콘크리트의 내구수명 평가", 한국콘크리트학회논문집, 22(4), 2010 https://doi.org/10.4334/JKCI.2010.22.4.595
  7. Trevor J., "Probabilistic model for the chloride-induced corr osion service life of bridge decks", Cem Conc Res, 32, 2002
  8. 이창수, 중성화와 염해를 고려한 콘크리트의 복합열화 예측, 한국콘크리트학회논문집, 15(6), 2003 https://doi.org/10.4334/JKCI.2003.15.6.902
  9. 김규용, "탄산화 및 염해의 복합작용에 의한 콘크리트의 결합재 구성에 따른 내구성능 평가에 관한 실험적 연구", 대한건축학회 논문집, 24(8), 2008
  10. 김우재, "Si/Al 복합 조성물과 다환형 올리고머 축합물을 혼입한 모르타르의 내염해성 및 수축제어 향상에 관한 연구", 대한건축학회 논문집, 30(6), 2014 https://doi.org/10.5659/JAIK_SC.2014.30.6.43
  11. Qiao Zhu, "Effect of chloride salt type on chloride binding behavior of concrete", Const Build Mat, 37, 2012
  12. G. Renaudin, "Polytypes and polymorphs in the related Friedel's salt [Ca2Al(OH)6]+[$X{\cdot}2H2O$] halide series", Cem Conc Res, 34, 2004