Specifics of physico-mechanical characteristics of thermally-hardened rebar

Kopiika, Nadiia; Selejdak, Jacek; Blikharskyy, Yaroslav

doi:10.30657/pea.2022.28.09

Cited by 13 publications

(5 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Digital Image Correlation (DIC) is a multi-stage technique which enables remote contactless measurement of full-field displacements and strains on the surface of objects. DIC has been widely used in various fields, including materials testing [2,7], structural analysis, biomechanics, and experimental mechanics, providing valuable insights into the mechanical behaviour of materials and structures. Although this method has experienced a long history of development [2] and modifications and could have specific features, which depend on the particular application field, it generally includes several key steps.…”

Section: Dic-the Main Principles Of the Methodsmentioning

confidence: 99%

Digital Image Correlation for Assessment of Bridges’ Technical State and Remaining Resource

Kopiika,

Blikharskyy

2024

Preprint

View full text Add to dashboard Cite

Bridges enable communications and transportation of goods nationally and internationally, underpinning economic and social activities, thus they are pylons of our prosperity and mobility. Bridges worldwide are constantly subjected to physical wear, ageing, deterioration, hazards, environmental influences, and increased loading. Loss of performance and functionality of bridge structures would have a crucial impact on overall infrastructural resilience and would cause significant negative economic and social consequences. Monitoring their behaviour for different loading conditions relies on accurate estimations of the stress-strain state of various critical components and remaining capacities. These activities are of high importance for better planning lifespan prolongation, that is the extension of their service life and prevention of unforeseen collapses, in line with sustainability principles of well-informed maintenance. In many cases, access to the structure is limited or even impossible, which causes the need for the deployment of remote and contactless methods. One such innovative technique, which has recently attracted attention in scientific and practical applications is the digital image correlation (DIC). DIC is a contactless approach applicable for long-term measurements, which enables obtaining the full field of strains and deformations. Although the DIC approach has been widely used in world engineering practice for monitoring bridges and has proved to be a reliable and accurate method, there is a lack of systematic integral review on previous practical applications, revealing limitations and perspectives. This is the main motivation and novelty of this study, which will describe selected case studies, in which DIC was used on real full-scale bridge structures and propose improvements for the method.

show abstract

Section: Dic-the Main Principles Of the Methodsmentioning

confidence: 99%

Digital Image Correlation for Assessment of Bridges’ Technical State and Remaining Resource

Kopiika,

Blikharskyy

2024

Preprint

View full text Add to dashboard Cite

show abstract

“…That provides an overview of the influence of different types of damages in the compressed zone on the bearing capacity of reinforced concrete beams. The paper develops a nonlinear strength-deformation model of a rebar structure (Karpyuk et al, 2018;Kopiika et al, 2022, Radek et al, 2020). An investigated assessment algorithm was applied for crosssections of reinforced concrete elements under difficult stress conditions.…”

Section: Literature Reviewmentioning

confidence: 99%

Investigation of defective reinforced concrete beams with obtained damage of compressed area of concrete

Blikharskyy

Lobodanov

Vegera

2022

Production Engineering Archives

View full text Add to dashboard Cite

In the building industry, it is a frequent cause of damage to elements at different stages: during transportation, operation, installation, etc. Since replacing an element is not always possible due to various circumstances, it entails significant financial losses, logistics, and others. For this reason, the expediency of studying the effect of damage on the bearing capacity of reinforced concrete elements is growing. This effect is dependent on its type and has significant variability. In the case of the combination of the defect and damage in reinforced concrete elements, the complexity of the research of this element increases significantly. In this article is discussed: a review of damaged reinforced concrete elements; researching the influence of the damage and additional factors on the element; developed testing methodology for bending reinforced concrete elements with damage to concrete in a compressed zone with insufficient reinforcement, when performing damage to the action of the load and during the action of the load, is presented; the influence on the deformability and bearing capacity of the variability of damage on the sample with insufficient reinforcement is reflected, taking into account the factor of change in the load at which the damage is performed; a comparison is made of the dependence of the change in the actual height of the compressed zone on the change in the load on the elements; implementation of conclusions on the result of the study.

show abstract

“…Technological influences are associated with a low level of performance of reinforced concrete works, poor-quality concreting, violation of regulatory requirements during installation and transportation operations. Among them, the most common are violations in geometric dimensions, thickness of the protective layer, deviations of physical and mechanical parameters of materials, mechanical damage [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

RC beams with an early phase of reinforcement damage

Blikharskyy,

Khmil,

Katunský

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

Self Cite

View full text Add to dashboard Cite

This article presents the experimental results of reinforced concrete beams with thermally strengthened reinforcement. According to engineering experience, rein-forced concrete is the most commonly used construction material today. Rein-forced concrete structures are widely used in buildings and roof structures for both industrial and civil purposes. Reinforced concrete is optimally used as part of building structures and effectively performs its functions, perceiving various types of force and non-force influences, the nature of which depends on the conditions of operation in different environments. At the same time, for reinforced concrete structures, the durability and residual bearing capacity sometimes de-pends not only on force loads, but also on the effects of the surrounding environment. One of the most dangerous effects are corrosion processes, which cause the appearance of defects of various degrees and, accordingly, a decrease in the load-bearing capacity of structural elements. At the same time, the intensity of degradation of structures under the influence of an aggressive environment de-pends on the operating conditions, chemical composition and concentration of the aggressive environment. That is why, two beams with a diameter of 20 mm of reinforcement of class A500C were designed and experimentally tested, and the other two beams were tested with damage from 20 mm to 18 mm of the outer thermally strengthened layer. Damage from 20 mm to 18 mm corresponds to 19% of undamaged samples.

show abstract

Specifics of physico-mechanical characteristics of thermally-hardened rebar

Cited by 13 publications

References 39 publications

Digital Image Correlation for Assessment of Bridges’ Technical State and Remaining Resource

Digital Image Correlation for Assessment of Bridges’ Technical State and Remaining Resource

Investigation of defective reinforced concrete beams with obtained damage of compressed area of concrete

RC beams with an early phase of reinforcement damage

Contact Info

Product

Resources

About