Features of SRP Tapes against CFRP Composites Used for Strengthening of Concrete Structures

Krzywoń, Rafał; Górski, Marcin; Dawczyński, Szymon

doi:10.1016/j.proeng.2017.06.216

Cited by 5 publications

(3 citation statements)

References 5 publications

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“…Ideal application conditions are difficult to maintain, which is why most researchers of impregnated tapes give values reduced to the steel cross section. Ultimate values are measured for the cracked stage, which means that the mechanical properties are mainly governed by the properties of steel and do not differ from those specified for naked wires [5,9,10]. The values of properties based on the final cross section of the laminate are significantly lower.…”

Section: Properties Of Steel Textilesmentioning

confidence: 97%

Steel-Reinforced Polymers and Steel-Reinforced Composite Mortars for Structural Applications—An Overview

Krzywoń

2020

J. Compos. Sci.

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Bonding of external reinforcement is currently the simplest, fastest, and most popular method of strengthening concrete and masonry structures. Glass and carbon organic fibers are the dominant materials used, but alternatives also include high-strength steel wires. The mechanical properties of such steel are comparable to those of carbon fiber. Due to their good compatibility with mortars, steel wires are particularly well suited to the revitalization of historic buildings. The manuscript provides an overview of research and experience in the use of steel-reinforced polymers (SRPs) and steel-reinforced composite mortars (SRCMs, also called steel-reinforced grout (SRG)) for structural strengthening. The examples described are for concrete beams, slabs and columns, walls, and masonry arches. The results of laboratory tests are discussed. The summary presents the advantages and disadvantages of composites based on ultra-high-strength steels compared with more popular carbon fiber composites.

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Section: Properties Of Steel Textilesmentioning

confidence: 97%

Steel-Reinforced Polymers and Steel-Reinforced Composite Mortars for Structural Applications—An Overview

Krzywoń

2020

J. Compos. Sci.

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“…The experimental results proved that the best effects of concrete beams reinforcement can be obtained by sticking CFRP fabric to the front of the beam. Krzywo ń et al [111] presented experimental test results of the beams strengthened with Steel Reinforced Polymer (SRP) and CFRP laminates. Both materials were compared towards reinforcement effectivity, delamination, longitudinal behavior, application process, and ease of shaping.…”

Section: Cfrp + Concretementioning

confidence: 99%

The Use of CFRP for Structural Reinforcement—Literature Review

Pawlak

Górny

Dopierala

et al. 2022

Metals

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Carbon fiber reinforced polymer (CFRP) composites are increasingly being used to strengthen structures and to retrofit existing structures. CFRP composites are used in various industries: construction, automotive, and many others. This literature review has shown that CFRP composites find numerous practical applications. Improving structures by reinforcing them with CFRP composite is an innovative approach in design. This review aims to explore the current state of the art in the types of structures that can be reinforced with CFRP, and modifications to the CFRP composite as an additional aspect to increase the strength of the reinforced structure. It has been shown that regardless of the type of reinforced material, the most critical element in this connection is the bonded joint. Proper surface preparation and the use of an appropriate adhesive are also important.

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“…In addition, the day before the application of external strengthening beams were impregnated with the S & P Resin 55. [10], delamination, long-term behaviour [11], deformability [12] and described in this paper crack behaviour.…”

Section: Longitudinal Cracking Of Frp Ebr Strengthened Beamsmentioning

confidence: 99%

Cracking of Beams Strengthened with Externally Bonded SRP Tapes

Krzywoń

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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View the article online for updates and enhancements. Related contentCombined effect of high curing temperature and crack width on chloride migration in reinforced concrete beams L Elkedrouci, B Diao, S Pang et al. Abstract. Paper discusses strengthening efficiency of relatively new kind of SRP composite based on high strength steel wires. They are made of ultra-high strength steel primarily used in cords of car tires. Through advanced treatment, the mechanical properties of SRP steel are similar to other high carbon cold drawn steels used in construction industry. Strength significantly exceed 2000 MPa, there is no perfect plasticity at yield stress level. Almost linear stress-strain relationship makes SRP steel mechanical properties similar to carbon fibers. Also flexibility and weight ratio of the composite overlay is slightly worse than CFRP strip. Despite these advantages SRP is not as popular as other composites reinforced with fibers of high strength. This is due to the small number of studies of SRP behaviour and applicability. Paper shows selected results of the laboratory test of beams strengthened with use of SRP and CFRP externally bonded overlays. Attention has been focused primarily on the phenomenon of cracking. Comparison include the cracking moment, crack width and spacing, coverage of crack zone. Despite the somewhat lower rigidity of SRP tapes, they have a much better adhesion to concrete, so that the crack width is comparable in almost the whole load range. The paper also includes an assessment of the common methods of checking the condition of cracking in relation to the tested SRP strengthening. The paper presents actual calculation procedures to determine the crack spacing and crack width. The discussed formulas are verified with results of provided laboratory tests.

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Features of SRP Tapes against CFRP Composites Used for Strengthening of Concrete Structures

Cited by 5 publications

References 5 publications

Steel-Reinforced Polymers and Steel-Reinforced Composite Mortars for Structural Applications—An Overview

Steel-Reinforced Polymers and Steel-Reinforced Composite Mortars for Structural Applications—An Overview

The Use of CFRP for Structural Reinforcement—Literature Review

Cracking of Beams Strengthened with Externally Bonded SRP Tapes

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