Flexural response of geopolymer and fiber reinforced geopolymer concrete beams reinforced with GFRP bars and strengthened using CFRP sheets

Junaid, M. Talha; Elbana, Abdalla; Altoubat, Salah

doi:10.1016/j.istruc.2020.02.003

Cited by 31 publications

(11 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…High-tensile-strength FRP composite materials are used in the reinforcement of these load-bearing elements and provide structural integrity by facilitating energy distribution and making large displacements [13]. High-performance FRP composite materials are applied externally to strengthen or repair structural members to improve load resistance and service life, as well as to recover existing structural elements [14]. Many researchers have noted that strengthening RC elements using FRP increases the load capacity [15], ductility [16], and energy dissipation capacity [17].…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of confined damaged concrete strengthened with fiber reinforced polymer wraps

Maraş¹

2021

El-Cezeri Fen Ve Mühendislik Dergisi

View full text Add to dashboard Cite

This study aims to investigate behaviour and failure modes of damaged concrete strengthened using fibre reinforced polymer (FRP) with three different thickness (50 mm, two-50 mm, and 150 mm strips) and different configurations of CFRP wraps. The mechanical performance of damaged concretes was evaluated utilizing carbon fibre reinforced polymer (CFRP) composites under compression tests. The strengthened confined damaged concrete specimen was compared with unconfined damaged concrete in terms of compressive strength, failure modes, and cracks patterns. A total of 8 different damaged and undamaged specimens were tested, with one of these specimens acting as a control damage specimens and the remaining specimens wrapped with different cross-section configurations of CFRP by different wrapping schemes. The results revealed that the partially-wrapped damaged specimens exhibited a higher compressive strength as compared to the corresponding control damaged specimens. The strengthened confined concrete specimen displayed more ductile behaviour, which depends on the failure mode. As a result of using the two-50 mm thickness of CFRP strips, a significant increase in the ultimate load was observed due to the high strength of the composites.

show abstract

Section: Introductionmentioning

confidence: 99%

Mechanical properties of confined damaged concrete strengthened with fiber reinforced polymer wraps

Maraş¹

2021

El-Cezeri Fen Ve Mühendislik Dergisi

View full text Add to dashboard Cite

show abstract

“…The incorporation of 0.5% Vol. of PVA fibers to the plain matrix resulted in a 65% increase of cohesion (1.32 MPa) in heat-cured specimens and a 204% increase (1.00 MPa) in ambient-cured specimens [41]. The polyoxometalate (POM) fibers provide significant mechanical reinforcement with a flexural strength of 11 MPa and compressive strength up to 62 MPa [42].…”

Section: Organic Synthetic Fibers Reinforcements In the Geopolymer Matrix Compositesmentioning

confidence: 99%

“…Cotton fibers enhance the compressive and impact strength of the geopolymers to 46 MPa and 4.5 kJ/m 2 with the addition of 0.5 wt.%. However, adding more cotton fibers until 1 wt.% reduces the compressive strength of the composite [41][42][43]. Natural fiber reinforced geopolymer matrices such as wool and bio-fibers produce environmentally friendly, low-cost, and light composites with improved flexural strength.…”

Section: Bio-fibers Reinforced Geopolymer Compositementioning

confidence: 99%

An Application Review of Fiber-Reinforced Geopolymer Composite

Samal

Blanco

2021

Fibers

View full text Add to dashboard Cite

Fiber-reinforced geopolymer composites (FRGCs) were considered in terms of application in various areas, and a review is presented in this article. FRGCs are emerging as environmentally friendly materials, replacing cement in the construction industry. An alternative inorganic binder such as a geopolymer matrix promotes environmental awareness on releasing less CO2. The inorganic matrix geopolymer is considered a greener cement for FRGCs. Various types of fiber reinforcements and their role toward the improvement of tensile, flexural, impact strength, fracture toughness, and energy absorption in overall mechanical performance in FRGCs were discussed. FRGCs and their properties in mechanical response, with correlation toward microstructure evolution at room and elevated temperatures, were also discussed. Simultaneously, the durability and impact strength of FRGCs and damage area as a function of the energy absorption were presented with 3D reconstruction images. Moreover, 3D images will cover the internal volume of the FRGCs with internal porosity and fiber orientation. Hybrid fiber reinforcement adds an extra step for the application of geopolymer composites for structural applications.

show abstract

“…In addition, strengthening with FRP bars or using FRP sheets can increase the flexural performance of reinforced concrete members [36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Review of Experimental Studies on Application of FRP for Strengthening of Bridge Structures

Yuan

2020

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

In recent years, fiber-reinforced polymer (FRP) composites have been widely used as a new type of high-performance material in concrete structures. FRP composites have the advantages of high strength, light weight, and corrosion resistance. Based on existing studies in the literature, this paper reviews the development and applications of FRP materials for the strengthening and rehabilitation of bridge structures. The types and properties of FRP composites are summarized, and the applications and development of FRP sheets, FRP bars, FRP grids, and prestressed FRP tendons for bridge structures are discussed. Different types of FRP composites result in different failure characteristics and bearing capacities. Moreover, this paper covers the FRP strengthening methods and the response properties of the flexural performance, bonding performance, and ductility. Significant conclusions regarding the strengthening/repair of bridge structures with FRP composites are presented. The review details the current state of knowledge and research on strengthening bridge structures with FRP composites and is helpful for better understanding and establishing design criteria.

show abstract

Flexural response of geopolymer and fiber reinforced geopolymer concrete beams reinforced with GFRP bars and strengthened using CFRP sheets

Cited by 31 publications

References 20 publications

Mechanical properties of confined damaged concrete strengthened with fiber reinforced polymer wraps

Mechanical properties of confined damaged concrete strengthened with fiber reinforced polymer wraps

An Application Review of Fiber-Reinforced Geopolymer Composite

Review of Experimental Studies on Application of FRP for Strengthening of Bridge Structures

Contact Info

Product

Resources

About