Experimental and modeling research on compression-shear behavior of carbon fiber reinforced coral concrete

Liu, Bing; Geng, Songyuan; Li, Zhi; Guo, Jin; Deng, Zigang; Qian, Kai

doi:10.1016/j.conbuildmat.2021.124347

Cited by 15 publications

(5 citation statements)

References 47 publications

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“…To better understand the compressive‐shear damage model of CFRAC, the concept of damage 34 is expounded in reference:

D = \frac{A^{S}}{A} .

…”

Section: Compression‐shear Damage Modelmentioning

confidence: 99%

“…[30][31][32][33] At present, research on the mechanical properties of CFRAC mainly focuses on compression, tension, and bending. [34][35][36][37] However, in field applications, most components are in a composite stress state, such as the frame structure beam-column joint core area in a compressionshear stress state. Therefore, it is very important to study the compressive-shear mechanical properties of CFRAC.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and damage modeling research on compression‐shear behavior of carbon fiber recycled aggregate concrete

Chen

Jiang

et al. 2022

Structural Concrete

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The application potential of recycled aggregate concrete has been realized with the development and utilization of waste concrete. Fibers are added to concrete made with recycled coarse aggregate to enhance its mechanical properties and broaden its application possibilities. Additionally, in practical applications, parts of structural elements are frequently under compressionshear stress. As a result, the normal stress ratio k (k = σ/f cu , where σ is axial compressive stress, and f cu is concrete cube compressive strength), coarse aggregate replacement rate, and carbon fiber content are used as design parameters to examine the compressive-shear mechanical properties of carbon fiber recycled aggregate concrete in this paper. The results show that the normal stress ratio and fiber content affect the whole compression-shear process curve, shear strength, peak shear displacement, and damage evolution. A compressive shear damage model that takes into account the aggregate replacement rate, normal stress ratio, and fiber content is established. And there is good agreement between the experimental findings and the calculation model.

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“…To better understand the compressive‐shear damage model of CFRAC, the concept of damage 34 is expounded in reference:

D = \frac{A^{S}}{A} .

…”

Section: Compression‐shear Damage Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental and damage modeling research on compression‐shear behavior of carbon fiber recycled aggregate concrete

Chen

Jiang

et al. 2022

Structural Concrete

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“…Adding some supplementary cementitious materials can considerably increase the compressive strength and durability of the coral concrete. Research has also been carried out by adding fiber to concrete to improve concrete toughness [25][26][27]. Fiber can restrain the expansion of cracks in concrete, improve the cracking resistance and impermeability of concrete, and extend the service life of concrete structures [28].…”

Section: Introductionmentioning

confidence: 99%

Fly Ash/Silica Fume Coral Concrete with Modified Polypropylene Fiber for Sustainable Building Construction

Wang

Shi

et al. 2022

Advances in Civil Engineering

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Coral concrete made of coral sand/aggregates has attracted significant interest in the construction of coastal or artificial island buildings by saving significant economic and environmental costs for transporting the conventional building materials from mainland. However, the application of coral concrete is very limited due to the drawback such as low strength, brittleness, and high porosity. This paper develops a new coral concrete composite utilizing coral debris to replace sand and aggregates, sea water, supplementary cementitious waste materials, namely, fly ash and silica fume and modified polypropylene fiber (MPPF) to achieve both sustainable and economic development needs in coastal and island building and construction. The mechanical and durability of the new coral concrete are evaluated and the synergistic effects of fly ash and silica fume on the performance of MPPF coral concrete are discussed. It has been found out that the addition of fly ash and silica fume in MPPF coral concrete can significantly improve the strengths and reduce the chloride diffusion of coral concrete. Compared with those from the specimens without fly ash and silica fume, the compressive, splitting tensile, flexural strengths of MPPF concrete with 10% fly ash and 10% silica fume are improved by 31%, 33%, and 58%, respectively. The new coral concrete composite would be an ideal building material solution for coastal and artificial island applications as most of the materials come from the local wastes.

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“…Adding fibers to concrete is a common method of modification, hence many researchers have considered incorporating corrosion‐resistant fibers to achieve a strengthening and toughening effect on CAC. Carbon fibers (CFs) could improve the various properties of CAC including strength, impact resistance, flexural properties, toughness, and compression‐shear behavior, while incorporating too many CFs could weaken the reinforcement effect 17–21 . Niu et al 22 and Wang et al 23 researched the strength and durability of basalt fiber‐reinforced coral concrete and proposed that basalt fibers (BFs) could enhance the mechanical properties of CAC at a suitable dose.…”

Section: Introductionmentioning

confidence: 99%

“…Carbon fibers (CFs) could improve the various properties of CAC including strength, impact resistance, flexural properties, toughness, and compression-shear behavior, while incorporating too many CFs could weaken the reinforcement effect. [17][18][19][20][21] Niu et al 22 and Wang et al 23 researched the strength and durability of basalt fiber-reinforced coral concrete and proposed that basalt fibers (BFs) could enhance the mechanical properties of CAC at a suitable dose. Besides, the addition of BFs improved the dynamic mechanical properties and the failure degree of CAC.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties and uniaxial constitutive model of fiber‐reinforced coral aggregate concrete

Deng

Zhou

Jiang

et al. 2022

Structural Concrete

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This article studied the mechanical properties and constitutive model of fiber‐reinforced coral aggregate concrete (FRCAC). The test results show that basalt fibers, carbon fibers, and polypropylene fibers (BFs, CFs, and PFs) can enhance the cube compressive strength and splitting tensile strength of coral aggregate concrete (CAC), but there are optimum contents. The optimal content of BFs, CFs, and PFs are 0.8%, 1.5%, and 0.3%, respectively. Fibers increase slightly the elastic modulus of FRCAC. The peak stress, peak strain, and ultimate strain of CAC can be improved by fibers, and the improvement effect is CFs, BFs, and PFs in descending order. According to the experimental results, a damage constitutive model suitable for FRCAC was proposed, which can efficiently indicate the stress–strain relationship of FRCAC. The damage parameter in the model can predict the damage evolution process of FRCAC.

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Experimental and modeling research on compression-shear behavior of carbon fiber reinforced coral concrete

Cited by 15 publications

References 47 publications

Experimental and damage modeling research on compression‐shear behavior of carbon fiber recycled aggregate concrete

Experimental and damage modeling research on compression‐shear behavior of carbon fiber recycled aggregate concrete

Fly Ash/Silica Fume Coral Concrete with Modified Polypropylene Fiber for Sustainable Building Construction

Mechanical properties and uniaxial constitutive model of fiber‐reinforced coral aggregate concrete

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