Flexural behaviour of geopolymer concrete beams reinforced with BFRP and GFRP polymer composites

Nagajothi, S.; Solaiyan, Elavenil; Sendrayaperumal, Angalaeswari; Lakshmaiya, Natrayan

doi:10.1177/13694332211054229

Cited by 22 publications

(5 citation statements)

References 33 publications

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“…Moreover, Cappellesso et al (2023) reviewed the efficiency of self-healing concrete technologies, affirming the potential of microbial and chemical methods to extend the service life of concrete structures (13). The research on Ground Granulated Blast Furnace Slag (GGBS) in concrete by Subramanian et al (2022) also emphasizes the improved flexural behavior and durability of concrete beams reinforced with polymer composites (14). In addition, the investigations into the prediction of self-healing characteristics of concrete with GGBS by M. and the work of Aleem et al on the properties of Geopolymer concrete with M-sand provide comprehensive insights into the advancements in concrete technology that contribute to more sustainable construction practices (15,16).…”

Section: Introductionmentioning

confidence: 99%

Harnessing microbes for self-healing concrete – A review

Asgharpour,

Çakiral,

Marar

2024

Res. Eng. Struct. Mat.

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This review explores the burgeoning field of microbially enhanced construction materials, with a special focus on self-healing concrete, through the lens of microbial biotechnology. Central to this discourse is the innovative use of bacteria, particularly Bacillus species, to address the pervasive issue of microcracks in concrete, a fundamental material in the construction industry. Traditional remedies, such as chemical admixtures and fiber reinforcements, offer partial solutions; however, self-healing concrete represents a paradigm shift, harnessing the natural calcite-precipitating ability of bacteria to autonomously repair cracks, thereby augmenting structural durability and longevity. Delving into the mechanics, the bacteria, embedded within the concrete matrix, remain dormant until crack formation triggers their metabolic pathways, leading to calcite production that effectively seals the fissures. This bio-mediated repair mechanism not only enhances the structural integrity of concrete but also aligns with sustainable construction practices by minimizing maintenance requirements and material wastage. The review extends beyond self-healing phenomena, encompassing broader applications of microbial technology in construction, including bio-concrete, bio-cement, and soil stabilization methods. These applications underscore the versatility of microbes in enhancing material properties such as compressive strength, tensile resilience, and water impermeability. Empirical evidence underscores the necessity of optimizing bacterial dosages and curing conditions to maximize the self-healing efficiency. Future research trajectories should aim to elucidate the complex interactions between microbial agents and concrete matrices, assess long-term performance, and evaluate the environmental and economic sustainability of microbial interventions in construction. The integration of microbial technology in construction materials heralds a new epoch of innovation, offering robust, sustainable, and resilient solutions to enduring challenges in the industry.

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Section: Introductionmentioning

confidence: 99%

Harnessing microbes for self-healing concrete – A review

Asgharpour,

Çakiral,

Marar

2024

Res. Eng. Struct. Mat.

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“…Structures made of materials of this type are characterized primarily by such properties as: light weight, high strength, excellent mechanical/fatigue properties, corrosion resistance, etc. The above-mentioned issues, among others, were presented in the papers [38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Experimental Research in the Aspect of Determining the Mechanical and Strength Properties of the Composite Material Made of Carbon-Epoxy Composite

Różyło¹,

Smagowski²,

Paśnik³

2023

Adv. Sci. Technol. Res. J.

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The present paper, provides a study of conducting experimental investigations (based on the ISO standards), in the context of determining material properties (mechanical and strength parameters) in the case of thin-walled composite structures -made of carbon-epoxy composite. Tests were carried out on 5 different types of test specimens (in accordance with the standards), with a minimum of 9 specimens per each type of test. The tests provided high repeatability of results, and the large number of test specimens per each test made it possible to precisely average the test results in terms of determining the necessary material properties. The tests were carried out using a Zwick Z100 universal testing machine (UTM), under room temperature conditions, using two types of test heads that allow static experimental tests. The results presented in this paper constitute a prelude to research within the framework of the project from the National Science Centre (Poland) with the number 2021/41/B/ST8/00148. The paper presents the initial stage of the implementation of the aforementioned project -which was the determination of material parameters of the composite material from which the target thin-walled composite structures with closed sections were made. The purpose of this paper was mainly to present a methodology for the determination of material parameters describing a composite material (laminate), in order to allow subsequent implementation of the determined properties into numerical models.

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“…Hadi et al 2022 experimentally investigated the axial load-bending behaviours of BFRP reinforced geopolymer concrete filled BFRP tube columns by applying various load eccentricities and found that GPC-BFRP based specimens were more ductile than normal concretebased specimens. Subramanian et al (2022) experimentally examined the flexural behaviour of geopolymer concrete beam reinforced with BFRP rebars, in terms of failure mode, curvature moment capacity, and crack width, etc. The results showed that BFRP reinforced geopolymer concrete beams demonstrated premature failure and sudden shear failure, compared to conventional steel-reinforced concrete beams.…”

Section: Introductionmentioning

confidence: 99%

Comparative Studies on the Seismic Performances of Precast Segmental Columns with Different Concrete, Reinforcement and Tendon Materials

Li,

Bi,

Hao

et al. 2023

Preprint

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In recent years, precast segmental columns cast with Portland cement concrete (OPC) and reinforced with steel rebars have gained popularity in engineering practices owing to its obvious advantages. However, the use of OPC in the construction associates to significant emission of carbon dioxide. Moreover, the corrosion of steel reinforcements and tendon are unavoidable during the lifetime of the structure, which will significantly lower the structural strength and durability. To overcome these issues, very recently, we have proposed using green and sustainable construction materials, i.e., the geopolymer concrete (GPC), together with basalt fibre reinforced polymer (BFRP) reinforcements and tendons, which possess the characteristics of less CO2 emission and excellent corrosion resistant capability, to construct precast segmental columns (i.e., to construct GPC-BFRP segmental columns) for seismic resistant applications. Experimental studies on the proposed GPC-BFRP and the conventional OPC-steel segmental columns were then performed to examine the performances of the proposed design. However, the comparisons of the experimental results were not strictly fair since the key parameters of the two types of columns, e.g., concrete strength and posttension force, in the experiments could not exactly be the same even though they were designed to be the same. This paper therefore extends the recent experimental study and performs numerical simulations. In particular, the experimentally tested columns were used to validate the three-dimensional (3D) finite element models (FEMs) of the two segmental columns with different materials (i.e., OPC-steel and GPC-BFRP). The validated numerical models are then used to examine the seismic performances of these two types of columns under the same design parameters. Numerical results show that under small earthquakes, the two types of columns present almost identical structural responses. Under moderate to severe earthquakes, the two columns also have comparable performances, but GPC-BFRP segmental column presents slightly larger displacement responses and failed slightly earlier because of the smaller BFRP elastic modulus. The results in this study demonstrate the potentials of constructing sustainable and durable GPC-BFRP segmental columns in seismic regions.

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Flexural behaviour of geopolymer concrete beams reinforced with BFRP and GFRP polymer composites

Cited by 22 publications

References 33 publications

Harnessing microbes for self-healing concrete – A review

Harnessing microbes for self-healing concrete – A review

Experimental Research in the Aspect of Determining the Mechanical and Strength Properties of the Composite Material Made of Carbon-Epoxy Composite

Comparative Studies on the Seismic Performances of Precast Segmental Columns with Different Concrete, Reinforcement and Tendon Materials

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