Study on flexural behavior of carbon fibers reinforced coral concrete using digital image correlation

Liu, Bing; Guo, Jin; Wen, Xiaoyan; Zhou, Jingkai; Deng, Zigang

doi:10.1016/j.conbuildmat.2019.117968

Cited by 62 publications

(14 citation statements)

References 42 publications

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“…The bond-slip damage model can be expressed as Equation 4: The bonding damage variable is shown in Equation 6. (6) According to the bond slip curve, the initial value of slope B can be obtained, and then, the damage amount under different dry-wet cycle times can be calculated by Equation 6. The damage variable evolution curve is shown in Figure 10.…”

Section: Bond-slip Model Considering Damage Effects For Cfrp-reinforced Coral Concrete Interfacesmentioning

confidence: 99%

“…Chen [5] experimentally studied the curing effect on the mechanical properties of cement-stabilized coral sand. By using the digital image correlation (DIC) method, Liu [6] obtained the strain fields on the surface of carbon fibre-reinforced coral concrete and analysed the flexural damage process. The abovementioned studies, however, are mainly focused on the mechanical properties of coral concrete.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Wet-Dry Alternation of Ocean Tide Environments on the Bond Behaviour of CFRP-Reinforced Coral Concrete

Wu¹

2021

Ceramics - Silikaty

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In this paper, the dry-wet cycle test in NaCl solutions is used to simulate ocean tide attack, and the pull-out test is carried out to explore the changes in the bond behaviour of CFRP-reinforced coral concrete under the attack of the simulated ocean tide environment. As shown by the results, with the increase in the number of dry-wet cycles, the bond strength of CFRPreinforced coral concrete will first increase and then decrease. Based on damage mechanics theory, the deterioration of the interfacial bond properties between CFRP bars and coral concrete under the attack of the ocean tide environment is analysed. By fitting the obtained data, the bond-slip equation of the CFRP-reinforced coral concrete with different damage degrees is obtained, and the related bond-slip constitutive model considering damage effects is established.

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Section: Bond-slip Model Considering Damage Effects For Cfrp-reinforced Coral Concrete Interfacesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Wet-Dry Alternation of Ocean Tide Environments on the Bond Behaviour of CFRP-Reinforced Coral Concrete

Wu¹

2021

Ceramics - Silikaty

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“…In contrast to Wang et al (2020c), the result obtained by Niu et al (2020a) showed that when the fiber content was greater than 0.05 vol%, the improvement would weaken. Liu et al (2020aLiu et al ( , 2020b also conducted an experimental study on the addition of carbon fibers and found that carbon fibers with a dosage of 1.5 wt% of binder could increase the ultimate bending strength of CAC by 20.8% to 33.3%. Because of the contradictory conclusions made from the limited number of references, the properties and mechanisms of fiber reinforced CAC need to be further studied in the future.…”

Section: Uniaxial Compressive and Tensile Strengthmentioning

confidence: 99%

Advances in coral aggregate concrete and its combination with FRP: A state-of-the-art review

Zhou

Feng

Yang

2020

Advances in Structural Engineering

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As an economical and eco-friendly construction material, coral aggregate concrete (CAC) plays an increasingly important role in emerging marine engineering applications. CAC fully utilizes local raw materials on remote islands. Due to the porous structure and low-strength characteristics of coral aggregates, CAC exhibits unique characteristics compared to ordinary concrete. This paper presents a state-of-the-art review of the properties of CAC, including (1) the physical properties of coral aggregates; (2) the mechanical properties of CAC under uniaxial and multiaxial compression; and (3) the durability of CAC especially its chloride ion resistance and performance under drying-wetting cycles. To overcome the challenges of steel corrosion in marine environments, fiber-reinforced polymer (FRP) has been indicated to be a promising material for applications in CAC construction. The latest studies on the combination of FRP and CAC are reviewed, including the use of FRP tubes and bars.

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“…Thanks to this, DIC has been widely used for the analysis and characterization of various heterogeneous materials, such as wood [30], composites [31] and concrete [32]. In this last field, there are studies that cover both the measurement of strains [33] and the analysis of cracks [34,35], and even the characterization of the influence of aggregate size on drying contractions [36]. The variability of the technique allows carrying out analysis in the plane of cubic specimens using 2D-DIC [34,35] and analysis in non-flat specimens using 3D-DIC [33,36,37], taking into account the variations outside the main plane.…”

Section: Introductionmentioning

confidence: 99%

Compression and Strain Predictive Models in Non-Structural Recycled Concretes Made from Construction and Demolition Wastes

et al. 2021

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This work aims to investigate different predictive models for estimating the unconfined compressive strength and the maximum peak strain of non-structural recycled concretes made up by ceramic and concrete wastes. The extensive experimental campaign carried out during this research includes granulometric analysis, physical and chemical analysis, and compression tests along with the use of the 3D digital image correlation as a method to estimate the maximum peak strain. The results obtained show that it is possible to accurately estimate the unconfined compressive strength for both types of concretes, as well as the maximum peak strain of concretes made up by ceramic waste. The peak strain for mixtures with concrete waste shows lower correlation values.

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Study on flexural behavior of carbon fibers reinforced coral concrete using digital image correlation

Cited by 62 publications

References 42 publications

Effects of Wet-Dry Alternation of Ocean Tide Environments on the Bond Behaviour of CFRP-Reinforced Coral Concrete

Effects of Wet-Dry Alternation of Ocean Tide Environments on the Bond Behaviour of CFRP-Reinforced Coral Concrete

Advances in coral aggregate concrete and its combination with FRP: A state-of-the-art review

Compression and Strain Predictive Models in Non-Structural Recycled Concretes Made from Construction and Demolition Wastes

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