钢-PE混杂纤维水泥基复合材料动态压缩性能尺寸效应试验研究

doi:10.11896/cldb.25020160

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Abstract Dynamic compression tests on steel-polyethylene hybrid fiber cement-based composites(S/PE-ECC) were performed using a split Hopkinson pressure bar(SHPB). And then compared the test results of two specimen sizes, Ф50 mm×25 mm and Ф70 mm×35 mm, focusing on failure modes, dynamic compressive strength, peak strain, and pre-peak stress toughness to investigate the size effect on S/PE-ECC. The results reveal that, under similar strain rates, the failure modes and failure severity in both sizes of S/PE-ECC specimens are generally comparable, with no significant size effect observed. The Ф50 mm×25 mm specimens exhibit higher peak stress and toughness compared to the Ф70 mm×35 mm specimens, demonstrating a noticeable size effect. The inclusion of fibers reduces the size effect on the dynamic peak strength and toughness of cement-based materials. Although the size effect on dynamic peak strain does not follow a clear pattern, reducing the specimen size amplifies the strain rate effect on strain.

Key words： cement-based composites steel-PE hybrid fibers dynamic compression size effect split Hopkinson pressure bar(SHPB)

Published: 25 March 2026 Online: 2026-04-03

CLC number:

TU525

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	Articles by authors
	ZHAO Bo
	LI Liang
	WANG Zichen
	WU Jun
	DU Xiuli

Cite this article:

ZHAO Bo,LI Liang,WANG Zichen, et al. Experimental Study on the Size Effect of Dynamic Compression Properties of Steel-PE Hybrid Fiber Cement-based Composites[J]. Materials Reports, 2026, 40(6): 25020160-8.

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https://www.mater-rep.com/EN/10.11896/cldb.25020160 OR https://www.mater-rep.com/EN/Y2026/V40/I6/25020160

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