Strength of Different Fiber Reinforced Concrete in Marine Environment

Amini, Fereidoun; Bafghi, Mohammad Ali Barkhordari; Safayenikoo, Hamed; Sarkardeh, Hamed

doi:10.5755/j01.ms.24.2.17909

Cited by 3 publications

(3 citation statements)

References 25 publications

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“…In previous studies, fiber types were used to improve mechanical properties, generally. Amini was has studied strength of different fiber reinforced concrete in marine environment [14]. Different researchers examined the effect of fibers on post-cracking behaviour and fracture energy [15], impact response and strength reliability [16] and development of concrete paving blocks prepared [17].…”

Section: Introduction mentioning

confidence: 99%

Heat Behavior of Electrically Conductive Concretes with and without Rebar Reinforcement

Dehghanpour

Yılmaz

2020

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Lately, electrically conductive concrete (ECC) is being investigated to prevent accumulation of snow and ice. The conductivity of electrical conductive concretes containing steel fiber is reduced by the corrosion of the steel fiber in time. Therefore, it is proposed to produce electrical conductive concretes that does not contain steel fibers recently. In this study, it is aimed to examine rebars in electrical conductive concretes non containing steel fiber. For this, 45 ´ 45 ´ 5 cm ECC slabs with and without Փ10 rebars were produced. Carbon fiber was used as a single fiber type in the mixtures. The heating times and thermal behaviors of the slab specimens were examined in a cooler at about – 10 °C. According to the results, the temperature in the rebars reinforced specimens has increased first in the regions near the electrodes and then proceeds towards the middle of the specimen. In non-rebars specimens, temperature rise has started from random points.

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Section: Introduction mentioning

confidence: 99%

Heat Behavior of Electrically Conductive Concretes with and without Rebar Reinforcement

Dehghanpour

Yılmaz

2020

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“…Due to the restraint of steel fibers, the development of cracks is restrained, which makes SFRC have higher crack resistance and good toughness [1]. Owing to these excellent properties, SFRC has been widely used in port structures and protection structures, especially in those structures with high requirements for diffusion resistance and crack resistance [2][3][4]. However, these structures mentioned above are often in direct contact with chlorine ions.…”

Section: Introductionmentioning

confidence: 99%

Influence of Combined Action of Steel Fiber and MgO on Chloride Diffusion Resistance of Concrete

Jiang

Deng

et al. 2020

Crystals

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To improve the chloride diffusion resistance and durability of concrete, a new kind of steel fiber reinforced MgO concrete (SFRMC) was made by adding steel fiber and MgO to concrete simultaneously. With steel fiber for load bearing and expansion limiting, MgO as the expander, SFRMC has both the advantages of fiber reinforced concrete and expansion concrete. The influence of steel fiber and MgO on the strength and chloride diffusion resistance of concrete was evaluated by splitting tensile test and chloride diffusion test. Mercury intrusion porosimeter (MIP) and scanning electron microscopy (SEM) were used to study the microstructure of SFRMC. The results showed that the combined action of steel fiber and MgO reduced the porosity of concrete and the chloride diffusion coefficient (CDC), which could not be achieved by steel fiber and MgO separately. In the free state, the expansion energy produced by the hydration of MgO made the concrete expand outwards. However, under the constraint of steel fiber, the expansion energy was used to tension the fiber, resulting in self-stress. In this way, compared to reference concrete RC, the tensile strength of SFRMC-1, SFRMC-2, and SFRMC-3 increased by 3.1%, 61.3%, and 64.5%, CDC decreased by 8.8%, 36.7%, and 33.1%, and the porosity decreased by 6.2%, 18.4%, and 20.6%, respectively. In addition, the SEM observations demonstrated that the interfacial transition zone (ITZ) between fiber and matrix was denser in SFRMC, which contributed to reduce the diffusion of chloride ions in the concrete.

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“…The addition of fiber can improve the physical properties of recycled concrete and act as a bridging role when cracks occur in the concrete matrix [6,7]. The additions of various kinds of fiber can improve the mechanical properties and control the cracking processes of the recycled concrete [8,9]. The mechanical properties of recycled concrete components can be optimized by the addition of waste fibers in a reasonable amount [10 -12].…”

Section: Introduction mentioning

confidence: 99%

The Permeability of Waste Fiber Recycled Concrete

Zhou

Kang

Wang

2019

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Permeability is one of the major performances for recycled aggregate concrete, which affects the durability and service life of concrete structures. In most cases, the main factor affecting the permeability of recycled aggregate concrete is the pore structure. Considering water-cement ratio, replacement rate of recycled aggregates, waste fiber length, and volume fraction of waste fibers as the design variables, pore structure and gas permeability were studied experimentally. In addition, fractal theory was here used to assess the pore structure of waste fiber recycled concrete and study the effects of pore structure on permeability. The results showed that the pore size distribution had a small impact on the permeability with the water-cement ratio and replacement rate of recycled aggregates increasing. The fractal dimension can be used to describe the complexity of the pore structure quantitatively. There is an obvious linear relationship between fractal dimension and gas permeability. The larger the pore volume fractal dimension, the better the impermeability of waste fiber recycled concrete.

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Strength of Different Fiber Reinforced Concrete in Marine Environment

Cited by 3 publications

References 25 publications

Heat Behavior of Electrically Conductive Concretes with and without Rebar Reinforcement

Heat Behavior of Electrically Conductive Concretes with and without Rebar Reinforcement

Influence of Combined Action of Steel Fiber and MgO on Chloride Diffusion Resistance of Concrete

The Permeability of Waste Fiber Recycled Concrete

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