Performance evaluation of high-strength concrete reinforced with basalt fibers exposed to elevated temperatures

Al-Askar, Abdulaziz A.; Albidah, Abdulrahman; Alqarni, Ali S.; Alyousef, Rayed; Mohammadhosseini, Hossein

doi:10.1016/j.jobe.2020.102108

Cited by 61 publications

(18 citation statements)

References 34 publications

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“…The significantly higher tensile strength of CA/CS 1:1 films is attributed to their homogeneous fibrous structure, which could lead to more uniform stress distribution, and subsequently, increased amounts of energy could be absorbed by the film. 34 It was worth noting that the elongation at break of CA/CS 1:1 films was also obviously higher than that of the other two samples. A similar phenomenon was observed in the electrospun assembled prolamin proteinnanofabrics, where the optimized fibers exhibited the highest tensile strength and elongation at break because of their uniform structure and hydrogen bonding interactions between the amine groups of CS and acetyl/hydroxyl groups of CA.…”

Section: Resultsmentioning

confidence: 83%

“…As shown in Figure , the tensile strength of CA/CS 3:1, 1:1, and 1:3 films was 0.44 ± 0.01, 2.97 ± 0.59, and 0.22 ± 0.04 MPa, respectively. The significantly higher tensile strength of CA/CS 1:1 films is attributed to their homogeneous fibrous structure, which could lead to more uniform stress distribution, and subsequently, increased amounts of energy could be absorbed by the film . It was worth noting that the elongation at break of CA/CS 1:1 films was also obviously higher than that of the other two samples.…”

Section: Resultsmentioning

confidence: 95%

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Electrospun Cellulose Acetate/Chitosan Fibers for Humic Acid Removal: Construction Guided by Intermolecular Interaction Study

Zhang

Wang

2021

ACS Appl. Polym. Mater.

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Humic substance is a ubiquitous class of natural organic matter in soil and aquatic ecosystems, which severely affects the terrestrial and aquatic environments and water-based engineering systems. In our previous work, the adsorption of humic acid (HA) on self-assembled monolayers with different functional groups (OH-SAMs, CH 3 -SAMs, NH 2 -SAMs, and COOH-SAM) has been reported, where amino groups exhibited a superior adhesion energy toward HA followed by methyl groups and hydroxyl groups. Therefore, guided by the intermolecular interaction study, chitosan (CS) and cellulose acetate (CA) containing -NH 2 and -CH 3 groups derived from waste materials were selected to fabricate electrospun fibrous adsorbents for the removal of HA from aqueous solutions in this work. The effect of CA/CS ratios on the structure and adsorption performance of electrospun fibers was investigated in detail. The results revealed that all the samples (CA/CS = 3:1, 1:1, 1:3) showed high adsorption capacities (>152 mg/g) toward HA at pH 4. This was because of the abundant functional groups on the surface of fibers. Especially, the CA/CS 1:1 sample had a uniform fibrous morphology with an average diameter of 335 ± 242 nm, which led to the highest tensile strength of 2.97 ± 0.59 MPa and adsorption capacity of 184.72 mg/g. The adsorption of HA onto CA/CS fibers was nonspontaneous and exothermic in nature. It followed the pseudo-first-order kinetic model and was primarily driven by electrostatic interaction. The adsorption isotherm was better fitted by the Langmuir model. Therefore, this work demonstrates the feasibility to use intermolecular interaction mechanisms to guide the design of functional materials. Moreover, it provides a biodegradable efficient adsorbent that is promising for the applications in water treatment.

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Section: Resultsmentioning

confidence: 83%

Section: Resultsmentioning

confidence: 95%

Electrospun Cellulose Acetate/Chitosan Fibers for Humic Acid Removal: Construction Guided by Intermolecular Interaction Study

Zhang

Wang

2021

ACS Appl. Polym. Mater.

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“…Alyousef et al [11] investigated waste-polypropylene-fiber-reinforced concrete for its possible application as an insulation material. However, natural fibers have some unique advantages as compared to manmade and synthetic fibers, such as low cost, environmental friendliness, and abundant resources [12,13]. Figure 2 depicts the natural plant fibers' broader classification, as presented in [14].…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Review of Types, Properties, Treatment Methods and Application of Plant Fibers in Construction and Building Materials

et al. 2022

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Sustainable development involves the usage of alternative sustainable materials in order to sustain the excessive depletion of natural resources. Plant fibers, as a “green” material, are progressively gaining the attention of various researchers in the field of construction for their potential use in composites for stepping towards sustainable development. This study aims to provide a scientometric review of the summarized background of plant fibers and their applications as construction and building materials. Studies from the past two decades are summarized. Quantitative assessment of research progress is made by using connections and maps between bibliometric data that are compiled for the analysis of plant fibers using Scopus. Data refinement techniques are also used. Plant fibers are potentially used to enhance the mechanical properties of a composite. It is revealed from the literature that plant-fiber-reinforced composites have comparable properties in comparison to composites reinforced with artificial/steel fibers for civil engineering applications, such as construction materials, bridge piers, canal linings, soil reinforcement, pavements, acoustic treatment, insulation materials, etc. However, the biodegradable nature of plant fibers is still a hindrance to their application as a structural material. For this purpose, different surface and chemical treatment methods have been proposed in past studies to improve their durability. It can be surmised from the gathered data that the compressive and flexural strengths of plant-fiber-reinforced cementitious composites are increased by up to 43% and 67%, respectively, with respect to a reference composite. In the literature, alkaline treatment has been reported as an effective and economical method for treating plant fibers. Environmental degradation due to excessive consumption of natural resources and fossil fuels for the construction industry, along with the burning of waste plant fibers, can be reduced by incorporating said fibers in cementitious composites to reduce landfill pollution and, ultimately, achieve sustainable development.

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“…After filling a mould and maturing of the concrete matrix, fibers act as a reinforcement, increasing the load-bearing capacity of the FRC. Fibers bridge the cracks, thus reducing and mitigating the crack propagation and damage effect [27]. In recent years, investigations in the field of composite materials have contributed greatly to the improvement of materials' manufacturing technology, reducing costs and allowing widening their application areas.…”

Section: Introductionmentioning

confidence: 99%

Concrete Reinforced by Hybrid Mix of Short Fibers under Bending

Lūsis

Annamaneni

Krasņikovs

2022

Fibers

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In the present study, the mechanical behavior of Fiber-Reinforced Concrete (FRC) beams was studied under bending until rupture. Each beam was reinforced with a hybrid mix of short fibers randomly distributed in its volume. Concrete beams with three different fiber combinations were investigated, namely, beams reinforced with (1) a homogeneously distributed mix of short polypropylene fibers (PP) and steel fibers, (2) PP fibers and Alkali Resistant Glass (ARG) fibers, and (3) PP and composite fibers (CF). The amount of short PP fibers was the same in all FRCs. The investigation focused on the fracture mechanisms and the load-bearing capacity of FRC beams with the developing macro cracks. In total, 12 FRC composite prismatic specimens were casted and tested in four-point bending experiments (4PBT). The current load value versus the Crack Mouth Opening Displacement (CMOD) for all FRCs was analyzed. The crack opening relationship and the influence of fibers on the fracture energy and flexural tensile strength were determined. Rupture surfaces of all samples were investigated using an optical microscope.

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Performance evaluation of high-strength concrete reinforced with basalt fibers exposed to elevated temperatures

Cited by 61 publications

References 34 publications

Electrospun Cellulose Acetate/Chitosan Fibers for Humic Acid Removal: Construction Guided by Intermolecular Interaction Study

Electrospun Cellulose Acetate/Chitosan Fibers for Humic Acid Removal: Construction Guided by Intermolecular Interaction Study

A Comprehensive Review of Types, Properties, Treatment Methods and Application of Plant Fibers in Construction and Building Materials

Concrete Reinforced by Hybrid Mix of Short Fibers under Bending

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