Mechanical properties and acoustic emission analysis of desert sand concrete reinforced with steel fiber

Qu, Changwei; Qin, Yongjun; Luo, Ling; Zhang, Liangliang

doi:10.1038/s41598-022-24198-2

Cited by 6 publications

(2 citation statements)

References 26 publications

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“…Volumetric fiber content up to 1.5% in HSC (V f ) generally increases compressive strength by about 10–20% compared to HSC without fibers 4 , 5 . There are also studies which show no effect of fibers on compressive strength, or even its reduction 6 – 9 . With increasing fiber content (V f ) in the composite, there is also an increase in the strain at maximum compressive stress 5 , 7 – 11 , while the effect of fiber addition on the rising part of the stress–strain curve (σ–ε) is small and clearly noticeable for the descending part of the σ–ε graph 4 .…”

Section: Introductionmentioning

confidence: 99%

Effects of the addition of short straight steel fibers on the strength and strains of high-strength concrete during compression

Kaźmierowski,

Jaskulski,

Drzazga

et al. 2024

Sci Rep

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The article presents the effect of the addition of short straight steel fibers on the behavior of high-strength concrete (HSC) under compression (σ–ε curves). Deformations of cylindrical samples were measured simultaneously with the use of linear variable differential transformers (LVDT), strain gauges and the method of digital image correlation (DIC). The study showed that as the content of short straight steel fibers increases, both the composite compressive strength (fc) and strains (ε0), which correspond to the stress equal to the compressive strength, increase as well. To a lesser extent, the effect of short straight fibers on the descending part of the σ–ε curve was observed. An increase in the density and toughness ratio of the compressive strength of high-strength concrete with fibers compared to concrete without fibers was also observed. Moreover, compressive strength of the composite was estimated using the ultrasonic method. Based on the obtained results, a statistical analysis and an estimation of parameters fc and ε0 were carried out, and an analytical model was proposed to describe σ–ε relationship for HSC reinforced with short straight fibers under compressive loading. The results obtained for compressed fiber-reinforced concrete were compared with data available in literature.

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Section: Introductionmentioning

confidence: 99%

Effects of the addition of short straight steel fibers on the strength and strains of high-strength concrete during compression

Kaźmierowski,

Jaskulski,

Drzazga

et al. 2024

Sci Rep

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show abstract

“…Fiber-reinforced concrete technology has been applied in DSC. Some researchers experimentally found that mixing steel fibers could substantially enhance the compressive strength and splitting tensile strength of DSC, and the enhancement of the latter strength was relatively obvious [ 42 , 43 , 44 ]. Steel fibers account for the most commonly used option in the current literature, yet they have the disadvantages of self-weighting and easy corrosion [ 45 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Microstructure of Polypropylene–Glass-Fiber-Reinforced Desert Sand Concrete

Hou,

Wen,

Huang

et al. 2023

Polymers

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In order to improve the performance of desert sand concrete, polypropylene fiber (PF) and glass fiber (GF) were used to prepare desert sand concrete (DSC) with different fiber and volume content, and the basic mechanical properties, such as cube compressive, tensile and flexural strengths, were tested and studied. Based on the mercury injection method (MIP) and scanning electron microscopy (SEM), the evolution of pore structure and interface structure was analyzed. The mechanism of fiber toughening was revealed at the microscopic level. The results show that the slump of DSC decreases with the increase in fiber content. The slump of glass-fiber-reinforced DSC (GFRDSC) is smaller than that of polypropylene-fiber-reinforced DSC (PFRDSC). The strength enhancement of DSC by fibers is in the order of flexural strength > split tensile strength > compressive strength. The flexural strength of hybrid-fiber-reinforced DSC (HyFRDSC) (0.1% PF + 0.1% GF) is increased by 40.7%. Meanwhile, fibers can improve the toughness of DSC. The MIP results show that the porosity of HyFRDSC decreased by 50.01%, and the addition of fiber can effectively refine the large pore size. The SEM results show that the incorporation of PF and GF causes the formation of a uniform and dense structure between the fibers, cement and aggregate. The two can give full play to the crack-resisting and toughening effect in different loading stages, thus improving the macromechanical properties of DSC.

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The Effect of Polypropylene Fiber and Glass Fiber on the Frost Resistance of Desert Sand Concrete

Hou,

Jian,

Huang

2023

KSCE J Civ Eng

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Mechanical properties and acoustic emission analysis of desert sand concrete reinforced with steel fiber

Cited by 6 publications

References 26 publications

Effects of the addition of short straight steel fibers on the strength and strains of high-strength concrete during compression

Effects of the addition of short straight steel fibers on the strength and strains of high-strength concrete during compression

Mechanical Properties and Microstructure of Polypropylene–Glass-Fiber-Reinforced Desert Sand Concrete

The Effect of Polypropylene Fiber and Glass Fiber on the Frost Resistance of Desert Sand Concrete

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