|
Title |
Performance Based Evaluation of Concrete Carbonation from Climate Change Effect on Curing Conditions of Wind Speed and Sunlight Exposure Time
|
|
Authors |
김태균(Tae-Kyun Kim) ; 신재호(Jae-Ho Shin) ; 최승재(Seung-Jai Choi) ; 김장호(Jang-Ho Jay Kim) |
|
DOI |
http://dx.doi.org/10.11112/jksmi.2015.19.5.045 |
|
Keywords |
기후변화 ; 콘크리트 탄산화 ; 만족도 곡선 ; 성능중심평가 Climate change ; Concrete carbonation ; Satisfaction curve ; Performance based evaluation |
|
Abstract |
Currently, extreme weather events such as super typhoon, extreme snowfall, and heat wave are frequently occurring all over the world by natural and human caused factors. After industrial growth in the 1970s, earth's temperature has risen sharply. due to greenhouse effect. Global warming can be attributed to gases emitted from using fossil fuel such as average carbon dioxide, perfluorocarbons, nitrous oxide, and methane. Especially, carbon dioxide has the highest composition of about 90%. in the fossile fuel usage emitted gas. Concrete has excellent durability as a building material climate change. However, due to various of physical and chemical environmental effect such as conditions during its curing process, the performance degradation may occur. Carbon dioxide in the atmosphere causes steel corrosion and durability decreases by lowering the alkalinity of concrete. Therefore, in this study, concrete durability performance with respect to carbonation from curing conditions change due to wind speed and sunshine exposure time. Concrete carbonation experiment are performed. using wind speed (0, 2, 4, 6) m/s and sunlight exposure time (2, 4, 6, 8) hrs. Also, performance based evaluation through the satisfaction curve based on the carbonation depth and carbonation rate test results are performed.
|