碳纤维混凝土高温冷却后动态压缩性能试验研究

doi:10.11896/cldb.24010268

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Abstract Carbon fiber reinforced concrete (CFRC) represents a novel high-performance construction material characterized by exceptional tensile strength and durability, thus holding significant potential for various engineering applications. Nevertheless, concrete materials, which may face extreme conditions like explosions and fires, will lead to the deterioration of their properties. Therefore, exploring the dynamic compressive behaviors of CFRC after exposure to high temperatures allows for a comprehensive understanding of material responses under extreme conditions, thus establishing a dependable basis for practical engineering applications. This research employed a split Hopkinson pressure bar (SHPB) with a 75 mm diameter to analyze the dynamic compression characteristics of CFRC with varying fiber volume ratios (0%, 1%, and 2%) after being subjected to different target temperatures (200 ℃, 400 ℃, 600 ℃, and 800 ℃) and subsequently cooled to room temperature. The results indicate that all types of concrete specimens exhibit an obvious strain rate effect following cooling at various target temperatures. Notably, as the carbon fiber content increases, the damage degree of the specimen gradually decreases, along with a corresponding reduction in dynamic peak strain. Moreover, elevating target temperatures corresponds to a decrease in dynamic peak stress, an increase in peak strain, and intensified specimen failure.

Key words： carbon fiber reinforced concrete(CFRC) high temperature cooling dynamic compressive behaviors pre-peak stress toughness

Published: 25 March 2025 Online: 2025-03-24

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TU502

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	Articles by authors
	DU Gang
	LI Liang
	WANG Zichen
	WU Jun
	DU Xiuli

Cite this article:

DU Gang,LI Liang,WANG Zichen, et al. Experimental Study on Dynamic Compressive Behaviors of Carbon Fiber Reinforced Concrete After High Temperature Cooling[J]. Materials Reports, 2025, 39(6): 24010268-6.

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https://www.mater-rep.com/EN/10.11896/cldb.24010268 OR https://www.mater-rep.com/EN/Y2025/V39/I6/24010268

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