|
|
|
한국건축시공학회 / v.4, no.1, 2004년, pp.119-126 
|
복합열화 환경하에서 표면피복종류 및 피복두께에 따른 철근콘크리트의 부식특성
( Corrosion Properties of Reinforced Concrete with Types of Surface Cover and Covering Depth under the Combined Deterioration Environments ) |
| 김무한;권영진;김용로;김재환;장종호;조봉석; 충남대학교 건축공학과;호서대학교 소방학;한일시멘트(주) 중앙연구;한일시멘트(주) 중앙연구;한일시멘트(주) 중앙연구;한일시멘트(주) 중앙연구소;
|
|
|
 |
|
| |
| 초 록 |
|
|
| Generally, reinforced concrete is one of the most commonly used structural materials and it prevents corrosion of steel bar by high pH of interior, But, as time elapsed, reinforced concrete structure become deteriorated by many of combined deterioration factors and environmental conditions. And, there are large number of deteriorate mechanism of the reinforced concrete structure and it acts complexly. It is recognized that steel bar corrosion is the main distress behind the present concern regarding concrete durability. In this study, to institute combined deterioration environments, established acceleration condition and cycle for combined deterioration environments has a resemblance to environments which are real structures placed. After that to confirm corrosion properties of reinforced concrete due to permeability with covering depth and types of surface cover under combined deterioration environments, measured carbonation velocity coefficients, chloride ion diffusion coefficients, water absorption coefficients, air permeability coefficients and electric potential, corrosion area ratio, weight reduction, corrosion velocity of steel bar. The results showed that an increase in age also decrease carbonation velocity coefficients, increase Chloride ion diffusion coefficients and increases water absorption coefficients. As well, an increase in age also increases corrosion of steel bar. Data on the development of corrosion velocity of steel bar with types of surface cover made with none, organic B, organic A, inorganic B, and inorganic A is shown. As well, permeability and corrosion velocity of steel bar with covering depth is superior to 10mm than 20mm. And it is confirmed permeability and corrosion properties of steel bar are closely related. |
| |
| 키워드 |
| 복합열화;중성화 속도계수;염 물이온 확산계수;물 흡수계수;투기계수;철근 부식속도;Combined deterioration environments;Carbonation velocity coefficients;Chloride ion diffusion coefficients;water absorption coefficients;air permeability coefficients;corrosion velocity of steel bar; |
| |
|
|
|
|
한국건축시공학회지 / v.4, no.1, 2004년, pp.119-126
한국건축시공학회
ISSN : 1598-2033
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922354893)
언어 : 한국어 |
|
| 논문 제공 : KISTI 한국과학기술정보연구원 |
|
|
|
|
|
|
