Dynamic Compression Mechanical Properties of Polyoxymethylene-Fiber-Reinforced Concrete

Guo, Luxin; Guo, Rongxin; Yan, Yong; Zhang, Yubo; Wang, Zhenhui; Mu, Yifan

doi:10.3390/ma15217784

Cited by 10 publications

(3 citation statements)

References 43 publications

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“…POM fiber in UHPC bridges cracks and restrains the matrix, which can enhance the material's toughness to avoid stress concentration due to the blocking of shock waves [37]. POM fiber can also inhibit the emergence and expansion of cracks, reducing the wear and tear of the material, thus improving the impact resistance and abrasion resistance of UHPC.…”

Section: Effect Of Pom Fiber Content On Impact and Abrasion Resistancementioning

confidence: 99%

Effect of Polyoxymethylene Fiber on the Mechanical Properties and Abrasion Resistance of Ultra-High-Performance Concrete

Tan,

Yang,

et al. 2023

Materials

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It is necessary to prepare marine UHPC with synthetic fibers instead of steel fibers, owing to the corrosion risk of steel fibers in marine environments. Currently, the performance of UHPC prepared with different types of fibers has not been comparatively investigated. This work prepared UHPC with steel fiber, polyoxymethylene (POM) fiber, polypropylene (PP) fiber, and polyvinyl alcohol (PVA) fiber. The effects of different fibers on the mechanical properties, impact, and abrasion resistance of UHPC were studied and compared. The results showed that increasing POM fiber can increase the mechanical strength, flexural toughness, impact, and abrasion resistance of UHPC. When its content reaches 2%, the adsorbed-in-fracture energy and abrasion strength of UHPC are 2670 J and 105 h/(kg/m2), respectively. At the same fiber content, POM fiber-reinforced UHPC shows better mechanical strength, toughness, and impact- and abrasion-resistance than the polypropylene (PP)- and polyvinyl alcohol (PVA)-fiber-reinforced UHPCs. Microstructure investigation found that PP fiber has the weakest binding with UHPC paste, which would directly pull out of the matrix under external tensile loading. This weak connection limits the strengthening and toughening effect on the UHPC. PVA fiber has an excellent interfacial connection with the UHPC paste. However, the low tensile strength of PVA fiber limits the strength and toughness of UHPC. POM fiber has a high tensile strength and can absorb tensile loading through debonding, fracture, and tearing. The fracture interface of POM fiber is large, indicating its significant role in strengthening and toughening the UHPC.

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Section: Effect Of Pom Fiber Content On Impact and Abrasion Resistancementioning

confidence: 99%

Effect of Polyoxymethylene Fiber on the Mechanical Properties and Abrasion Resistance of Ultra-High-Performance Concrete

Tan,

Yang,

et al. 2023

Materials

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“…Many earlier investigations on the dynamic characteristics of concrete have been conducted, including the dynamic compression mechanical properties of polyoxymethylene-fiber-reinforced concrete [8]. Dynamic properties test and constitutive study of lightweight aggregate concrete under uniaxial compression [9].…”

Section: Introductionmentioning

confidence: 99%

Prediction of the Dynamic Properties of Concrete Using Artificial Neural Networks

Yasin

2024

Civ Eng J

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This study explores how dynamic characteristics of concrete, such as dynamic shear modulus, dynamic modulus of elasticity, and dynamic Poisson's ratio, affect stability and performance in civil engineering applications. Traditional testing procedures, which include the time-consuming and costly process of mixing and casting specimens, are both time-consuming and costly. The primary objective of this research is to improve efficiency by using Artificial Neural Networks (ANNs) and regression analysis to predict the dynamic properties of concrete, providing a machine-learning-based alternative to traditional experimental methodologies. A set of 72 concrete specimens was methodically built and evaluated, with compressive strengths of 50 MPa, aspect ratios ranging from 1 to 2.5, and an average density of 2400 kg/m3. An input dataset and ANN targets were built using these samples. The ANN model, which used cutting-edge deep learning techniques, went through extensive training, validation, and testing, as well as statistical regression analysis. A comparison shows that the predicted dynamic modulus of elasticity and shear modulus using both ANN and regression approaches nearly match the experimental values, with a maximum error of 5%. Despite good forecasts for the dynamic Poisson's ratio, errors of up to 20% were detected on occasion, which were attributed to sample shape variations. Doi: 10.28991/CEJ-2024-010-01-016 Full Text: PDF

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“…One way to reduce the cost of PVA-ECC is to partially replace the high-cost oiled PVA with relatively low-cost fibers. It has been shown that blending PVA fibers with PET fibers [ 25 ], PP fibers [ 26 , 27 ], steel fibers [ 28 , 29 ], and POM fibers [ 30 ] can effectively reduce the cost. Wang et al [ 31 , 32 ] showed that the incorporation of recycled steel fibers or short-cut steel wool fibers could improve the compression and tensile strengths but reduce the tensile strain capacity.…”

Section: Introductionmentioning

confidence: 99%

Cost-Effective Engineered Cementitious Composites with Hybrid PVA and Basalt/PP Fiber: A Study on Compressive, Tensile and Impact Performance

Liao

Huang

et al. 2023

Materials

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Currently, oil-coated PVA fibers are the most commonly used material in ECC research. However, the high price limits the application of PVA-ECC in practical engineering. In order to reduce the cost, one of the methods is to partially replace the PVA fibers in ECC. In order to demonstrate the feasibility of PVA/BF-ECC and PVA/PP-ECC, polyvinyl alcohol fibers (PVA), basalt fibers (BFs) and polypropylene fibers (PP) were added at 0.5%, 1.0% and 1.5% by volume of PVA in addition to 1% by volume of PVA. Subsequently, tensile, compression and drop-weight impact tests were conducted on single or hybrid fiber concrete. The results showed that the post-peak compression toughness, tensile strength, and initial cracking impact strength of PVA/BF-ECC and PVA/PP-ECC increased significantly with the increase in the volume ratio of BF and PP fibers, while the performance of PVA-ECC materials with the same fiber volume ratio decreased slightly. Therefore, the cost can be reduced by designing hybrid PVA/BF-ECC materials that meet the performance requirements. The experimental evidence presented in this study demonstrates the feasibility and reasonable prospect of the new hybrid PVA/BF-ECC.

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Dynamic Compression Mechanical Properties of Polyoxymethylene-Fiber-Reinforced Concrete

Cited by 10 publications

References 43 publications

Effect of Polyoxymethylene Fiber on the Mechanical Properties and Abrasion Resistance of Ultra-High-Performance Concrete

Effect of Polyoxymethylene Fiber on the Mechanical Properties and Abrasion Resistance of Ultra-High-Performance Concrete

Prediction of the Dynamic Properties of Concrete Using Artificial Neural Networks

Cost-Effective Engineered Cementitious Composites with Hybrid PVA and Basalt/PP Fiber: A Study on Compressive, Tensile and Impact Performance

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