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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2005.6
- 수록면
- 49 - 54 (6page)
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Conventional studies have focused on the reduction in the water-cement ratio, the use of various admixtures, etc., to ensure the durability of reinforced concrete structures against such deterioration factors as carbonation and chloride attack. However, improvement in the concrete quality alone is not considered sufficient or realistic for meeting the recent demand for a service life of over 100 years. This study intends to improve the durability of reinforced concrete structures by improvement in the reinforcing steel, which has remained untouched due to cost problems, through subtle adjustment of the steel components to keep the cost low.
As a fundamental study on the performance of Cr-bearing rebars in steel reinforced concrete structures exposed to corrosive environments, The test specimens were made by installing 8 types of rebars in concretes with a chloride ion content of 0.3, 0.6, 1.2, 2.4 and 24㎏/㎥. Corrosion accelerated curing were then conducted with them. The corrosion resistance of Cr-bearing rebars was examined by measuring crack widths, half-cell potential, corrosion area and weight loss after 155 cycles of corrosion-accelerating curing.
The results of the study showed that the corrosion resistance increased as the Cr content increased regardless of the content of chloride ions, and that the Cr-bearing rebars with a Cr content of 5% and 9% showed high corrosion resistance in concretes with a chloride ion content of 1.2 and 2.4㎏/㎥, respectively.
As a fundamental study on the performance of Cr-bearing rebars in steel reinforced concrete structures exposed to corrosive environments, The test specimens were made by installing 8 types of rebars in concretes with a chloride ion content of 0.3, 0.6, 1.2, 2.4 and 24㎏/㎥. Corrosion accelerated curing were then conducted with them. The corrosion resistance of Cr-bearing rebars was examined by measuring crack widths, half-cell potential, corrosion area and weight loss after 155 cycles of corrosion-accelerating curing.
The results of the study showed that the corrosion resistance increased as the Cr content increased regardless of the content of chloride ions, and that the Cr-bearing rebars with a Cr content of 5% and 9% showed high corrosion resistance in concretes with a chloride ion content of 1.2 and 2.4㎏/㎥, respectively.
목차
Abstract
1. INTRODUCTION
2. OUTLINE OF EXPERIMENT
3. EXPERIMENT PROCEDURE
4. RESULT AND DISCUSSION
5. CONCLUSIONS
REFERENCES
참고문헌 (12)
참고문헌 신청
[학술지(정기간행물)] - / 1999 / Corrosion measures of a concrete construction and prospect. cement & concrete : 1 ~ 15
[학술지(정기간행물)] - / 2003 / An experimental study on the retrofitti-ng effects of reinforced concrete columns damaged by rebar corrosion strengthened with carbon fiber sheets. Cement and Concrete Research 33 : 563 ~ 570
[학술지(정기간행물)] - / 1999 / Using Stainless Steels as Long-Lasting Rebar Material : 72 ~ 76
[학술지(정기간행물)] - / 2003 / Reinforced concrete structures-shall concrete remain the dominating means of corrosion prevention?. Materials and Corrosion 54 : 369 ~ 378
[학술지(정기간행물)] - / 1997 / Study on Allowable Coating Damage of Epoxy-Coated Reinforcing Bars. ACI Materials Journal 94 (4) : 267 ~ 272
[학술지(정기간행물)] - / 2003 / An experimental study on the retrofitti-ng effects of reinforced concrete columns damaged by rebar corrosion strengthened with carbon fiber sheets. Cement and Concrete Research 33 : 563 ~ 570
[학술지(정기간행물)] - / 1999 / Using Stainless Steels as Long-Lasting Rebar Material : 72 ~ 76
[학술지(정기간행물)] - / 2003 / Reinforced concrete structures-shall concrete remain the dominating means of corrosion prevention?. Materials and Corrosion 54 : 369 ~ 378
[학술지(정기간행물)] - / 1997 / Study on Allowable Coating Damage of Epoxy-Coated Reinforcing Bars. ACI Materials Journal 94 (4) : 267 ~ 272
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