globalchange  > 气候减缓与适应
DOI: 10.1186/s40069-019-0333-4
WOS记录号: WOS:000457584600001
论文题名:
Prediction of Chloride Penetration Depth Rate and Diffusion Coefficient Rate of Concrete from Curing Condition Variations due to Climate Change Effect
作者: Kim, Tae-Kyun; Choi, Seung-Jai; Choi, Ji-Hun; Kim, Jang-Ho Jay
通讯作者: Kim, Jang-Ho Jay
刊名: INTERNATIONAL JOURNAL OF CONCRETE STRUCTURES AND MATERIALS
ISSN: 1976-0485
EISSN: 2234-1315
出版年: 2019
卷: 13, 期:1
语种: 英语
英文关键词: climate change ; chloride diffusion coefficient rate ; Satisfaction Curve (SC) ; performance based evaluation (PBE)
WOS关键词: FLY-ASH ; STRENGTH ; DURABILITY ; PBMD
WOS学科分类: Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS研究方向: Construction & Building Technology ; Engineering ; Materials Science
英文摘要:

Recently, many countries including Korea are experiencing serious climatic events, such as heat waves, torrential rain, cold waves, heavy snowfall, and typhoons. In addition, due to the extreme climate events, the construction period of concrete structures tends to be extended, whereby increasing related economic losses. Pushing through construction projects without considering climate change results in low-quality concrete, causing poor constructions humans and consequent casualties and property damages. Moreover, exposure of concrete structures to extreme environmental conditions that involve carbonation, freezing and thawing and to chloride attack environments may reduce the durability of concrete. In the environments of carbonation and chloride attack, concrete structure cured in inadequate curing conditions develops cracks, making it easy for CO2 and chloride to and corrode rebars and reducing durability of concrete. Also, in the environments of repeated freezing and thawing, the inadequately cured concrete develops microcracks through which water infiltrates, resulting in decline in performance. According to the study results, durability generally declines most rapidly in the chloride attack environment among various environmental types. Therefore, to address these issues and provide measures for climate change, this study investigated the effect of climate factors on strength and chloride diffusion coefficient rate of concrete structure by selecting sunlight exposure time and wind speed as the most important curing conditions among various climate factors that affect concrete performance. Regarding the analytical method of experimental results, performance based evaluation (PBE) on concrete strength and durability using Satisfaction Curve is proposed. In addition, the PBEs used in this study are applied to future climate scenarios. It is expected that the optimal mix ratio accounting for climatic change in concrete mixing can be derived using the future climate change scenario.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/129214
Appears in Collections:气候减缓与适应

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作者单位: Yonsei Univ, Sch Civil & Environm Engn, 134 Shinchon Dong, Seoul 03722, South Korea

Recommended Citation:
Kim, Tae-Kyun,Choi, Seung-Jai,Choi, Ji-Hun,et al. Prediction of Chloride Penetration Depth Rate and Diffusion Coefficient Rate of Concrete from Curing Condition Variations due to Climate Change Effect[J]. INTERNATIONAL JOURNAL OF CONCRETE STRUCTURES AND MATERIALS,2019-01-01,13(1)
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