해양 환경하 콘크리트 교량의 염해환경 성능평가 연구 = A Study on the Evaluation of the Environmental Performance of Salt Damage in Concrete Bridges under Marine Environment

다국어 초록 (Multilingual Abstract)

This study aims to investigate in the assessment of salt damage conditions in concrete structures under marine environment conditions. It aims also to improve the durability of new concrete bridge through applying the life prediction method of salt damaged bridges. As measuring chloride contents of these bridges on the southwest coastal area, it is shown that the average amount of chloride on these surfaces close to shore is 10.5 kg/㎥. This figure is much higher than that of the Standard Specification for Concrete(1.5 kg/㎥∼2.5 kg/㎥). In contrast, it is shown the average amount of chloride on these surfaces in tide zone is 13.1 kg/㎥. Its figure is much lower than that of the Standard Specification for Concrete(20 kg/㎥). And the life of bridges is estimated about 17 years. To improve the durability for salt damage, these bridges are applied to surface treatment method which the replacement rate of furnace slag is 60%. Under this condition, it is expected to be 110 years. Consequently, it is clear that the use of slag replacement rate, surface treatment agent, and anti-corrosion agent to control chloride penetration effects of a submerge-based concrete bridge will be required.

참고문헌 (Reference)

1 채원규, "해양 환경하 콘크리트 교량의 탄산화 내구성능 평가 인자 도출을 위한 현장조사 연구" 한국안전학회 30 (30): 102-109, 2015

2 채원규, "콘크리트 구조물의 염해도장을 통한 내구성능 향상 및 경제적 효과분석" 한국안전학회 25 (25): 155-160, 2010

3 김동백, "철근콘크리트 구조물의 염해에 의한 사용수명 예측에 관한 연구" 한국안전학회 20 (20): 113-118, 2005

4 정지승, "염화칼슘이 함유된 제설제로 인한 콘크리트 바닥판 단부의 염해에 관한 사례 연구" 한국안전학회 29 (29): 87-93, 2014

5 권기준, "염해환경 콘크리트 구조물의 확률론적 내구성 해석" 한국안전학회 22 (22): 51-56, 2007

6 Korea Concrete Institute, "The Latest Concrete Engineering" 509-510, 2007

7 The Ministry of Construction and Transportation, "Highway Bridges Standard Specification"

8 W. K. Chai, "Field Survey Study on Durability Assesment Factors for a Concrete Bridge under Marine Environment(2)" 47-, 2015

9 W. K. Chai, "Field Survey Study on Durability Assesment Factors for a Concrete Bridge under Marine Environment" 175-, 2015

10 D. Darwin, "Effects of Deicers on Concrete Deterioration" 622-627, 2008

11 W. D. Lindquist, "Effect of Cracking on Chloride Content in Concrete Bridge Decks" 467-473, 2006

12 Korea Institute of Construction Technology, "Development of Durability Assessment Technology for Concrete Bridge Damage" 105-106, 2001

13 The Ministry of Construction and Transportation, "Concrete Structural Standards"

14 The Ministry of Construction and Transportation, "Concrete Structural Standards"

15 The Ministry of Construction and Transportation, "Concrete Standard Specification" 170-173, 2009

16 The Korea Road Corporation, Road Traffic Research Institute, "Assessment of Durability of Salt Damage on Offshore Bridges and Improvement of Internal Salt Performance" 54-, 2013

17 "ACI Committee 226, Ground Granulated Blast Furnace Slag as a Cementious Constituent in Concrete" 7 : 327-342, 1987