气候变化领域集成服务门户(CCPortal): Microstructural damage and durability of plateau concrete: Insights into freeze-thaw resistance and improvement strategies

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DOI	10.1016/j.istruc.2024.105888
	Microstructural damage and durability of plateau concrete: Insights into freeze-thaw resistance and improvement strategies
	Mi, Lin; Mao, Jianghong; Li, Lang; Shi, Quan; Fang, Kun; Li, Sili; Deng, Xiang; Li, Guo
发表日期	2024
ISSN	2352-0124
起始页码	60
卷号	60
英文摘要	Extreme environmental conditions and inferior building materials in plateau regions present significant challenges to the durability of concrete structures, particularly in resisting freeze-thaw cycles. This study employs an actual mix ratio from a concrete mixing station in the Qinghai-Tibet Plateau for a comparative analysis against conventional mixes in plain terrains. Utilizing a fast-freezing test with controlled variables, the study explores the microstructural evolution of plateau concrete. Results reveal that although the adapted mix ratio meets strength criteria, it falls short in frost resistance compared to standard concrete used in plain regions. Further, the plateauspecific curing conditions were shown to increase both the width and porosity of the interface transition zone (ITZ). High clay content in building materials for plateau construction also impacts the cement paste's microstructure. The study offers engineering recommendations aimed at enhancing the quality and performance of concrete in plateau conditions to address the unique challenges posed by extreme environmental factors.
英文关键词	Plateau curing condition; Plateau building materials; Freeze-thaw; Mix ratio; Porosity; Interface transition zone; Plateau concrete
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Civil
WOS记录号	WOS:001162995000001
来源期刊	STRUCTURES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/292967
作者单位	Sichuan University; Sichuan University; Sichuan University; Tibet University
推荐引用方式 GB/T 7714	Mi, Lin,Mao, Jianghong,Li, Lang,et al. Microstructural damage and durability of plateau concrete: Insights into freeze-thaw resistance and improvement strategies[J],2024,60.
APA	Mi, Lin.,Mao, Jianghong.,Li, Lang.,Shi, Quan.,Fang, Kun.,...&Li, Guo.(2024).Microstructural damage and durability of plateau concrete: Insights into freeze-thaw resistance and improvement strategies.STRUCTURES,60.
MLA	Mi, Lin,et al."Microstructural damage and durability of plateau concrete: Insights into freeze-thaw resistance and improvement strategies".STRUCTURES 60(2024).