Structural Strengthening/Repair of Reinforced Concrete (RC) Beams by Different Fiber-Reinforced Cementitious Materials - A State-of-the-Art Review

Bahij, Sifatullah; Omary, Safiullah; Feugeas, F.; Faqiri, Amanullah

doi:10.37421/jcde.2020.10.354

Cited by 6 publications

(5 citation statements)

References 41 publications

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“…Column structures that are less strong in the building structure, the dimensions of the columns can be increased using the column jacketing technique [31]. For cracks that occur in the beam and stem walls, the beam jacketing technique can also be used [32]. After the crack has been repaired, the final stage is to fix the damaged parts such as walls, floors, and ceilings.…”

Section: Crack Repairingmentioning

confidence: 99%

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Diagnosis and Repair of the Cracking House Next to the River

Pramono

Mahendra

Wijaya

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Natural disasters and human error factors can cause damage to buildings. Human error causes various issues, including inadequate craftsmanship in the mixing of building materials and preliminary structural design and specification. Inadequate knowledge of the building’s structure and the type of soil on which it stands is also one of the fault designs in construction. This study utilises a case study methodology divided into three sections: soil analysis, building analysis, and techniques for avoiding and repairing the research object. A literature review is essential to ascertain the type of soil and the proper footing to utilise when examining the soil. In the building analysis, it is necessary to determine the damage of the building and its repair. These steps demanded were to prevent further damage by adding structures to reinforce existing structures in load distribution. After determining that the structure is safe from further damage, the final step is to repair the walls, floor, and ceiling. These improvements are part of an effort to ensure the building’s long term sustainability. The final phase in home restoration is to decorate the interior to make the residents feel comfortable.

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Section: Crack Repairingmentioning

confidence: 99%

“…Another research, [31] provided repair and rehabilitation solutions to the building in Ahmedabad Asset of ONGC. The research on how to strengthen the structure of reinforced concrete was conducted by [32]. While [33] explain the grouting method for the rehabilitation and reinforcement of masonry structures.…”

Section: Related Workmentioning

confidence: 99%

Diagnosis and Repair of the Cracking House Next to the River

Pramono

Mahendra

Wijaya

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…The strengthening or repair of concrete structures is not a new topic, but plenty of research has been performed to study the efficiency of strengthened or repaired concrete elements [4][5][6][7]. For this purpose, different types of cementitious materials, such as ultra-high performance concrete (UHPC) [8,9], reinforced mortar layer [10], cementitious grout [11], high-performance fiber reinforced concrete (HPFRC) [12], engineered cementitious composites (ECCs), and ultra-high performance fiber-reinforced cementitious composites (UHPFRCCs) [13] were used. In addition, various fiber-reinforced polymer (FRP) composites, such as carbon fiber-reinforced polymer (CFRP) [14], glass fiber-reinforced polymer (GFRP) [15], basalt fiber-reinforced polymer (BFRP) [16], and aramid fiber reinforced polymer (AFRP) [17], were applied to strengthen concrete elements.…”

Section: Introductionmentioning

confidence: 99%

Peeling Force Required for the Detachment of Non-Woven Plastic Tissue from the Surface of Mortar Prisms

Bahij,

Omary,

Belhaj

et al. 2023

Polymers

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The purpose of this experimental paper is to examine the adhesion properties between non-woven plastic sheets and cement mortar. Specifically, the effect of w/c ratio and quantity of superplasticizer on the peeling force required for the detachment of tissue from the surface of prisms was studied in detail. Therefore, two types of mortar mixtures were prepared: (1) mixtures without superplasticizer with three different w/c ratios of 0.45, 0.50, and 0.55, and (2) mixtures with reduced amounts of water and three various percentages of superplasticizer of 0.0%, 1.11%, and 2.17% (by weight of cement). For this purpose, bond tests with a special setup, interferometry and microscopic analyses, and mechanical tests were performed. The results highlight that non-woven sheets had strong adhesion to cement mortar without using any adhesive materials. However, the peeling force improved by 15.78% as the w/c ratio increased from 0.50 to 0.55. Conversely, this force declined by 24.50% as the w/c ratio decreased from 0.50 to 0.45. In addition, the peeling force decreased by 20.62% as the w/c ratio decreased from 0.50 to 0.45 and 1.11% superplasticizer was added to the mixtures. This property decreased further by 38.29% as the w/c ratio lowered to 0.40, and the amount of superplasticizer increased to 2.17%. The interferometry and microscopic analyses clearly demonstrate that the adhesion between tissue and mortar is largely related to the surface texture, amount of cement paste, and quantity of residual fibers on the surfaces of samples. It indicates that mortar samples with higher w/c ratios had a smoother surface, and providing more contact area for microfilaments, which resulted in thicker layers of remaining fibers compared to the specimens with a lower w/c ratio. Even though there was not much difference in the surface texture of specimens with superplasticizer and lower w/c ratios, because of their similar workability. Still, thicker layers of microfilaments remained on the surface of specimens containing a lower amount of superplasticizer, which resulted in strong adhesion between sheet and cement mortar.

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“…Concrete could deteriorate throughout the service life because of errors in design, change in usage, inadequate maintenance, material deficiencies, overloading, fire, earthquake, or other environmental aspects. Thus, researchers have considered different materials and methods for strengthening and retrofitting of structural elements [31][32][33]. In this regard, research was conducted to study the flexural behaviors of reinforced concrete (RC) beams strengthened by fiber reinforced polymer (FRP) with various configurations.…”

Section: Introductionmentioning

confidence: 99%

Effect of Non-Woven Polyethylene Terephthalate (PET) Tissue on Fresh and Hardened Properties of Concrete

et al. 2022

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This study will investigate the effect of non-woven PET plastic tissue on the fresh, physical, mechanical, acoustic, thermal, and microstructural behaviors of concrete. Including reference specimens, non-woven fabrics were considered in two ways: (a) as a layer with four various configurations of 1-layer, 2-sides, 3-sides, and full wrapping (4-sides) to strengthen specimens, and (b) as (10 × 10) mm cut pieces with three different incorporated percentages of 0.25%, 0.50%, and 0.75%. Based on the experimental results, mechanical properties (compressive, split tensile, and flexural strengths) were remarkably improved by applying non-woven sheets as a layer. For instance, the cylindrical compressive and split tensile strengths were improved by 13.40% and 15.12% for the strengthened specimens compared to the reference specimens, respectively. Moreover, control specimens were damaged to many fragments after mechanical testing, but the samples strengthened by such fabrics or containing cut pieces were maintained and not separated into many small parts. The acoustic behavior and thermal conductivity declined by 9.83% and 19.67% with the attachment of tissue on one side and 2-sides, respectively. Acoustic behaviors decreased by 10.0%, 17.60%, and 26.30% and thermal conductivity decreased by 6.60%, 12.10%, and 15.50%, with the incorporation of 0.25%, 0.50%, and 0.75% of cut pieces, respectively. Finally, it was discovered that non-woven tissue is advised to enhance particular properties of concrete.

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Structural Strengthening/Repair of Reinforced Concrete (RC) Beams by Different Fiber-Reinforced Cementitious Materials - A State-of-the-Art Review

Cited by 6 publications

References 41 publications

Diagnosis and Repair of the Cracking House Next to the River

Diagnosis and Repair of the Cracking House Next to the River

Peeling Force Required for the Detachment of Non-Woven Plastic Tissue from the Surface of Mortar Prisms

Effect of Non-Woven Polyethylene Terephthalate (PET) Tissue on Fresh and Hardened Properties of Concrete

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