聚酯纤维泡沫混凝土力学性能及孔结构研究

doi:10.11896/cldb.22060231

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Abstract The addition of fiber can effectively improve the defects of low compressive strength and brittleness of foamed concrete and enhance its engineering applicability. A series of experiments were carried out to study the improvement of mechanical properties of foamed concrete by pol-yester fiber. The foamed concrete with density class 700 kg/m³ was selected. The influence of different fiber content (0.1%, 0.2%, 0.3% and 0.4%) on compressive strength, splitting tensile strength, flexural strength and ductility of materials was considered. The results showed that when the fiber content was 0.1%, the material showed better compressive and splitting tensile properties. The 28 day strength increased by 86.4% and 91.3% respectively. When the fiber content was 0.2%, the material showed better flexural properties and the flexural strength increased by 39.1% in 28 days. The failure modes and stress-strain curves of the specimens indicate that polyester fiber can effectively enhance the ductility of foamed concrete. Finally, the pore structure parameter of five groups of specimens were obtained by image analysis and proces-sing method. The mechanism of the effect of polyester fiber on the mechanical properties of foamed concrete was discussed from the perspective of pore structure.

Key words： foamed concrete polyester fiber mechanical property pore structure image processing

Published: Online: 2024-01-16

CLC number:

TU528

Fund:National Natural Science Foundation of China (U1602232) and Special Funds for Basic Scientific Research Busi-ness in Central Universities (N2301005,N2301006).

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	Articles by authors
	WANG Shuhong
	GONG Fan
	YIN Hong
	XIU Zhanguo

Cite this article:

WANG Shuhong,GONG Fan,YIN Hong, et al. Study on Mechanical Properties and Pore Structure of Foamed Concrete Reinforced with Polyester Fiber[J]. Materials Reports, 2024, 38(1): 22060231-8.

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http://www.mater-rep.com/EN/10.11896/cldb.22060231 OR http://www.mater-rep.com/EN/Y2024/V38/I1/22060231

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