冲击荷载作用下改性聚丙烯纤维高强珊瑚混凝土的动力特性

doi:10.11896/cldb.23070191

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Abstract The impact compression test of modified polypropylene fiber-reinforced high-strength coral concrete was performed by using a 100 mm split Hopkinson pressure bar device, and the dynamic compression strength, deformation characteristics and energy dissipation of modified polypropylene fiber-reinforced high strength coral concrete samples with different fiber dosages were analyzed. The results show that the dynamic compressive strength, fracture state and toughness index of modified polypropylene fiber-reinforced high-strength coral concrete with different fiber dosages have obvious strain rate effect. With the increase of the fiber dosage, the damage degree of modified polypropylene fiber-reinforced high-strength coral concrete gradually decreases, and the peak strain, toughness index and energy dissipation gradually increase. In conclusion, mo-dified polypropylene fiber can effectively enhance toughness and reduce brittle failure characteristics of coral concrete.

Key words： high-strength coral concrete modified polypropylene fiber dynamic compressive strength toughness index energy dissipation

Published: 10 March 2024 Online: 2024-03-18

CLC number:

TU528.2

Fund:National Science Fund for Distinguished Young Scholars of China (52222110) and the Natural Science Foundation of Jiangsu Province (BK20211230).

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	Articles by authors
	CHENG Yuzhu
	MA Linjian
	WANG Lei
	GENG Hansheng
	GAO Kanghua
	TAN Yizhong

Cite this article:

CHENG Yuzhu,MA Linjian,WANG Lei, et al. Dynamic Mechanical Properties of Modified Polypropylene Fiber-reinforced High-strength Coral Concrete Under Impact Load[J]. Materials Reports, 2024, 38(5): 23070191-7.

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http://www.mater-rep.com/EN/10.11896/cldb.23070191 OR http://www.mater-rep.com/EN/Y2024/V38/I5/23070191

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