Research of Physical and Mechanical Characteristics of Modified Adhesive Bindersfor Structural Reinforcement Systems of Building Structures

Старовойтова, И А; Shakirov, Almaz; Зыкова, Е С; Semenov, A. N.; Сулейманов, А М

doi:10.31659/0585-430x-2021-788-1-2-98-104

Cited by 2 publications

(1 citation statement)

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“…Scientific and Production Company «Recon» along with Kazan State University of Architecture and Engineering developed epoxy no-bake binders RecARM [18][19][20] to be used together with carbon fiber fabrics for SRS. The addition of dispersion of multi-walled carbon nanotubes to the binder (0.0025-0.01 weight fractions per 100 weight fractions of epoxy resin) improved adhesion properties, tensile and flexural strength [19].…”

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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Preliminary Description of the Work of Reinforced Concrete Elements With External Reinforcement With Composite Materials During Bending With Torsion

Merkulov

Esipov

Kashuba

2022

Bulletin of Belgorod State Technological University Named After. V. G. Shukhov

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The calculation methods of reinforced external reinforcement elements when working on torsion are considered succinctly in available sources and current regulatory documents. This article discusses a number of existing proven methods for calculating reinforced concrete bendable elements with external composite reinforcement, including when working with torsion. The necessity of introducing into the existing calculation dependences of the prerequisites for substantiating the behavior of reinforced concrete bendable elements, including those with external composite reinforcement, when working in a complex stress-strain state is described. The cases of occurrence of additional torsional forces in the conditions of classical variants of loads and impacts on the element are considered. A description of the work of reinforced concrete elements with external reinforcement with composite materials during bending with torsion is proposed. The main provisions of the work of reinforced concrete structures in bending with torsion are given. The main limiting states are presented. An assumptions are made about the possible presence of additional limiting states of reinforced concrete elements with external reinforcement with composite materials. A variant of the condition of proportionality of longitudinal relative deformations for reinforced concrete elements with external reinforcement with composite materials during bending with torsion is proposed.

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Research of Physical and Mechanical Characteristics of Modified Adhesive Bindersfor Structural Reinforcement Systems of Building Structures

Cited by 2 publications

References 0 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

Preliminary Description of the Work of Reinforced Concrete Elements With External Reinforcement With Composite Materials During Bending With Torsion

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