Compressive performance of square and low-strength concrete columns retrofitted with externally-bonded CFRP

Carrillo, Julián; Valencia-Mina, William; Bojórquez, Edén

doi:10.1016/j.mtcomm.2019.100874

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…The majority of publications about study, development, and application of compositebased reinforcement systems are associated with testing of reinforced products and structure elements, refinement of calculation methods and practical experience of their implementation [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Meanwhile, the Russian market is dominated by imported epoxy compounds, and there are hardly any publications about development and study of epoxy adhesives for SRS.…”

Section: Introductionmentioning

confidence: 99%

Epoxy and epoxy novolac adhesive binders for structural reinforcement systems of building structures

Старовойтова¹,

Nizamiev

2021

E3S Web Conf.

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Today, along with the conventional materials and technologies for reinforcement of building structures, structural reinforcement systems based on polymer composites are on the rise. A structural reinforcement system consists of reinforcing filler (normally, carbon fiber fabric or cloth) and adhesive binder. This paper investigated the modification of epoxy nobake adhesive binders to provide a higher thermal resistance and mechanical strength. The influence of epoxy novolac resins on the processing and physical mechanical properties of adhesives, thermal resistance is studied. It is found that the substitution of 20-40 % of epoxy resin for epoxy novolac resin in the binder increases tensile strength by 40-50 %, flexural modulus by 20 %, reduces tensile strain, and increases glass transition temperature. From the processing point of view, it is more reasonable to use liquid epoxy novolac resins with a functionality of f=2.5 than semisolid resins with a functionality of f=3.6.

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Section: Introductionmentioning

confidence: 99%

Epoxy and epoxy novolac adhesive binders for structural reinforcement systems of building structures

Старовойтова¹,

Nizamiev

2021

E3S Web Conf.

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“…As a reinforcing material used in concrete structures, FRPs exhibit remarkably high mechanical properties and are also characterized by outstanding plasticity. However, their compression strength appears to be approximately 20% to 50% lower in comparison to their shear strength [14][15][16][17], which constitutes the main load that these structures are being subjected to. Materials of this category provide high levels of resistance when used in corrosive environments and high stress applications, contributing to the minimization of long-term repair costs while at the same time maintaining structural integrity (in terms of statics) [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Reinforced Concrete Structures Containing Chopped Carbon Fibers with Polymer Composite Materials

Soupionis

Zoumpoulakis

2021

Polymers

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In this paper, the reinforcement of concrete combining composite materials with carbon, glass and aramid fibers is discussed. Accordingly, cement specimens reinforced with chopped carbon fibers were manufactured via the retrofitting method and coated using various different types of fabrics (carbon, glass and aramid), and epoxy resin systems were developed and studied using compressive strength tests. In addition, polymeric matrix (epoxy resin) composite materials reinforced with different types of fabric (carbon, glass and aramid (Kevlar® 49)) were manufactured and their shear and bending strengths were measured. Before reinforcing cement specimens, all fabrics (carbon, glass and aramid (Kevlar® 49)) were placed in a vacuum chamber and were processed via pre-impregnation. This specific reinforcing method significantly improved the mechanical properties of cementitious structures with compressive strength values that reached 81 MPa. In a similar way, the bending and shear strengths of the materials under study were measured at 405 MPa and 33 MPa, respectively.

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Axial behavior of concrete confined with flax fiber-reinforced polymers

Akın

Rashidi

2021

Materials Today Communications

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Compressive performance of square and low-strength concrete columns retrofitted with externally-bonded CFRP

Cited by 4 publications

References 24 publications

Epoxy and epoxy novolac adhesive binders for structural reinforcement systems of building structures

Epoxy and epoxy novolac adhesive binders for structural reinforcement systems of building structures

Reinforced Concrete Structures Containing Chopped Carbon Fibers with Polymer Composite Materials

Axial behavior of concrete confined with flax fiber-reinforced polymers

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