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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.2
- 수록면
- 19 - 26 (8page)
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이 논문의 연구 히스토리 (6)
2014
- 이 논문의 후속연구가 궁금하신가요?
- 연관 학술논문 또는 학술발표를 통해 보다 발전된 연구결과를 확인하실 수 있습니다.
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초록· 키워드
오류제보하기
When reinforced concrete is subjected to high temperatures in a fire, there is a deterioration in its properties. It is very important to know loss in compressive strength, loss of elastic modulus, cracking and spalling of the concrete. To determine whether a structure can be repaired rather than demolished after a fire, an assessment of structural integrity must be made.
To assess the remaining bearing capacity of the structural elements after fire, information of the temperatures reached inside the elements is necessary. On heating, a change in color from normal to a pink/red is often observed and this is useful since it coincides with the onset of significant loss of concrete strength.
The purpose of this study is to quantify changes in color for blast-furnace slag concrete using photo image analysis and to identify the relationship between color change and increasing temperatures.
For this purpose, we manufactured concrete samples with varying water-to-binder ratios and heated them to target temperatures of 100, 200, 300, 400, 500, 600, and 700 ℃ in an electric oven, whereupon their color changes in photos of the specimen were measured using photoshop program.
The result of this study shows that color changes in a concrete exposed to high temperature have a consistent relationship with several variables according to RGB, HSB, and Lab color coordinates. Therefore, it is possible to estimate how much temperature the specimen was exposed considering these results of color change.
To assess the remaining bearing capacity of the structural elements after fire, information of the temperatures reached inside the elements is necessary. On heating, a change in color from normal to a pink/red is often observed and this is useful since it coincides with the onset of significant loss of concrete strength.
The purpose of this study is to quantify changes in color for blast-furnace slag concrete using photo image analysis and to identify the relationship between color change and increasing temperatures.
For this purpose, we manufactured concrete samples with varying water-to-binder ratios and heated them to target temperatures of 100, 200, 300, 400, 500, 600, and 700 ℃ in an electric oven, whereupon their color changes in photos of the specimen were measured using photoshop program.
The result of this study shows that color changes in a concrete exposed to high temperature have a consistent relationship with several variables according to RGB, HSB, and Lab color coordinates. Therefore, it is possible to estimate how much temperature the specimen was exposed considering these results of color change.
목차
Abstract
1. 서론
2. 포토샆 프로그램에 의한 사진분석법
3. 실험계획
4. 실험결과 및 분석
5. 결론
참고문헌
참고문헌 (11)
참고문헌 신청
한국콘크리트학회 / 2005 / 철근콘크리트 구조물의 내화특성
Deng-Fong Lin / 2004 / Assessment of fire-damaged mortar using digital image process / Journal of materials in civil engineering 16(4)
E. Annerel / 2011 / Methods to quantify the color development of concrete exposed to fire / Construction and building materials
Matteo Colombo / 2007 / New NDT techniques for the assessment of fire-damaged concrete structures / Fire Safety Journal
N. R. Short / 2001 / Assessment of fire damaged concrete using color image analysis / Construction and building materials
Deng-Fong Lin / 2004 / Assessment of fire-damaged mortar using digital image process / Journal of materials in civil engineering 16(4)
E. Annerel / 2011 / Methods to quantify the color development of concrete exposed to fire / Construction and building materials
Matteo Colombo / 2007 / New NDT techniques for the assessment of fire-damaged concrete structures / Fire Safety Journal
N. R. Short / 2001 / Assessment of fire damaged concrete using color image analysis / Construction and building materials
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