Mechanical Behaviors of Microwave-Assisted Pyrolysis Recycled Carbon Fiber-Reinforced Concrete with Early-Strength Cement

Li, Yeou-Fong; Li, Jie-You; Syu, Jin-Yuan; Yang, Tung‐Han; Chang, Shu-Mei; Shen, Ming–Yuan

doi:10.3390/ma16041507

Cited by 3 publications

(9 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Patrinou et al [45] concluded that the compressive strength of cement composites increased with an increase in RCF dosage. Li et al [54] demonstrated that concrete composite with 10% of RCF dosage exhibited better compressive strength compared to concrete composites with 5% and 15% of RCF dosages. Similarly, Mastali et al [53] have investigated the influence of RCF dosage on cement composites by adding 0.5%, 1%, 1.5%, and 2% of RCF volume to a cement composite.…”

Section: Effect Of Rcf On Properties Of Cement Compositesmentioning

confidence: 99%

“…Their study indicated that a further increase in the RCF dosage up to 2.5% regressed flexural strength because of the agglomeration of RCF [45]. Li et al [54] have investigated the flexural strength of early strength concrete by adding a 5%, 10%, and 15% dosage of RCF. Their investigation concluded that a 10% addition of RCF improved the flexural strength of cement composites.…”

Section: Flexural Strength Tensile Strength and Other Propertiesmentioning

confidence: 99%

“…The use of RCF also improves the tensile strength of cement composites. For example, Li et al [54] have investigated the splitting tensile strength of early strength concrete by adding a 5%, 10%, and 15% dosage of RCF and concluded that, comparatively, a 10% addition of RCF showed a significant improvement in the splitting tensile strength of cement composites. Wang et al [50] have shown that incorporating RCF into cement composites improved tensile strength by 65.3% compared to that of cement-only samples.…”

Section: Flexural Strength Tensile Strength and Other Propertiesmentioning

confidence: 99%

“…Multiple studies have been conducted over the years on the workability of cement composites with added RCFs. For example, Li et al [54] have shown that the slump values of fresh RCF-added concrete composites is at 150 mm, 80 mm, and 35 mm with additions of 5%, 10%, and 15% RCF, respectively. Faneca et al [34] have investigated the workability of four different dosages of cement composites with added RCFs.…”

Section: Workabilitymentioning

confidence: 99%

See 3 more Smart Citations

A Critical Review on the Application of Recycled Carbon Fiber to Concrete and Cement Composites

Bhandari,

Nam

2024

Recycling

View full text Add to dashboard Cite

Carbon fiber (CF) exhibit extraordinary properties, such as high specific and tensile strength, high elastic modulus, light weight, and weather resistance, which has led to a rapid increase in the use of CF in sectors such as aerospace, sports equipment, energy storage, automotive, construction, and wind energy applications. However, the increase in CF applications has led to a massive production of CF waste. As CF is non-biodegradable, it results in CF accumulation in landfills. CF waste is a rapidly growing ecological hazard because of its high energy consumption and expensive production methods. The properties of carbon fibers can be preserved even after recycling given the development of recycling technology; therefore, multiple studies have been conducted to demonstrate the effect of recycled carbon fiber (RCF) in different composites such as cement-based composites. This review presents the results of studies conducted on the application of RCF to cement composites and analyzes those results to investigate the effect of RCF on the properties of cement composites such as mechanical properties (compressive strength, flexural strength, and tensile strength), fracture characteristics (fracture toughness and fracture energy), electrical properties, and workability. Overall, the studies demonstrated a positive trend in the application of RCF to cement composites.

show abstract

Section: Effect Of Rcf On Properties Of Cement Compositesmentioning

confidence: 99%

Section: Flexural Strength Tensile Strength and Other Propertiesmentioning

confidence: 99%

Section: Flexural Strength Tensile Strength and Other Propertiesmentioning

confidence: 99%

Section: Workabilitymentioning

confidence: 99%

See 2 more Smart Citations

A Critical Review on the Application of Recycled Carbon Fiber to Concrete and Cement Composites

Bhandari,

Nam

2024

Recycling

View full text Add to dashboard Cite

show abstract

“…The presence of sizing on the surfaces of fibers can affect the mechanical behavior of fiber-reinforced composites. Cement matrix composite specimens with sizing-removed carbon fibers can attain higher compressive strengths compared to untreated carbon fiber cement matrix composite specimens [28][29][30]. The sizing-removed fibers can be easily dispersed in the cementitious composite, and the bonding between the fibers and the cement can be notably improved.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Sizing Removal Methods of Fiber Surface on the Mechanical Performance of Basalt Fiber-Reinforced Concrete

Li,

Hung,

Syu

et al. 2024

Fibers

Self Cite

View full text Add to dashboard Cite

In this study, comprehensive analyses were used to evaluate the physical and chemical properties of basalt fibers, employing a variety of instruments. Additionally, heat treatment and solvent treatment methods were used to eliminate the sizing present on fiber surfaces. The heat treatment process involved determining the optimal temperature and duration required to remove the sizing from the basalt fibers. The appearance, chemical composition, and crystal structure of the original fibers were examined, including those subjected to heat treatment and those treated with solvents. These treated fibers were then incorporated into concrete to create basalt fiber-reinforced concrete (BFRC) specimens for mechanical tests, which assessed their compressive, flexural, and splitting tensile strengths. The results revealed that heat treatment at 300 °C for 180 min effectively removed the sizing on the basalt fibers, and the heat-treated basalt fibers exhibited uniform dispersion inside the BFRC specimens. In addition, solvent treatment primarily removed the soluble components of the sizing. The mechanical properties of specimens with sizing-removed basalt fibers were better than the specimens with original basalt fibers and the benchmark specimens. Crucially, the mechanical test results demonstrated that BFRC incorporating heat-treated basalt fibers exhibited a superior mechanical performance compared to BFRC incorporating original fibers or fibers subjected to the solvent treatment.

show abstract

Comparing Mechanical Characterization of Carbon, Kevlar, and Hybrid-Fiber-Reinforced Concrete under Quasistatic and Dynamic Loadings

Yang

Hsu

et al. 2023

Buildings

View full text Add to dashboard Cite

Concrete is a brittle material due to its poor tensile strength; consequently, concrete tends to crack or peel under an applied external load. Previous studies have investigated the effect of incorporating fiber into concrete, which can improve its tensile strength. In this study, the static and dynamic mechanical characteristics of three types of fiber-reinforced concrete (FRC) were examined: carbon-fiber-reinforced concrete (CFRC); Kevlar-fiber-reinforced concrete (KFRC); and a combination of both, known as carbon/Kevlar-hybrid-fiber-reinforced concrete (HFRC). This study created concrete specimens by pneumatically dispersing carbon and Kevlar fibers and mixing them with cement to comprise 1% of the weight. The mixture was then combined with aggregates and water to form the concrete specimens. When compared with the benchmark concrete specimens, it was found that the compressive strength of the CFRC, KFRC, and HFRC specimens increased by about 19% to 50%, the bending strength increase by about 8% to 32%, and the splitting strength increased by about 4% to 36%. Specifically, the HFRC made with the 24 mm carbon and Kevlar fibers displayed the most significant mechanical strength in a static state. Furthermore, the HFRC showed superior resistance to impact compared to the benchmark concrete specimens across various impact energies, with the 24 mm carbon and Kevlar fiber HFRC showing the highest resistance. The inclusion of fibers in the split Hopkinson pressure bar (SHPB) test demonstrated a notable increase in the maximum strength, particularly in the case of the 12 mm carbon fiber combined with the 24 mm Kevlar fiber in the HFRC specimen.

show abstract

Mechanical Behaviors of Microwave-Assisted Pyrolysis Recycled Carbon Fiber-Reinforced Concrete with Early-Strength Cement

Cited by 3 publications

References 51 publications

A Critical Review on the Application of Recycled Carbon Fiber to Concrete and Cement Composites

A Critical Review on the Application of Recycled Carbon Fiber to Concrete and Cement Composites

Effect of the Sizing Removal Methods of Fiber Surface on the Mechanical Performance of Basalt Fiber-Reinforced Concrete

Comparing Mechanical Characterization of Carbon, Kevlar, and Hybrid-Fiber-Reinforced Concrete under Quasistatic and Dynamic Loadings

Contact Info

Product

Resources

About