Injection Technologies for the Repair of Damaged Concrete Structures

Panasyuk, V. V.; Marukha, V. I.; Sylovanyuk, V. P.

doi:10.1007/978-94-007-7908-2

Cited by 33 publications

(14 citation statements)

References 5 publications

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“…For engineering purpose, it is necessary to consider in further works some analytical SIFs solutions for typical engineering problems of crack with reinforcement. As an example, the successful method of analytical SIF determination for filled cracks developed by Panasyuk et al (2014) can be presented.…”

Section: Methodsmentioning

confidence: 99%

“…Other interesting group seems to be concrete structures with wide application in the construction of industrial structures such as bridges, tunnels, large reservoirs, collectors and docks, as well as residential buildings. For such structures, a relatively novel approach of strengthening due to injection methods is developed by Panasyuk et al (2014) as an alternative for traditional strengthening methods. However, a number of existing steel structures erected at the turn of the nineteenth century and twentieth century, with the co-existence of a lack of material data in the literature, confirmed the need of investigation of the fatigue fracture behaviour of such old materials.…”

Section: Introductionmentioning

confidence: 99%

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Fatigue crack growth rate in CFRP reinforced constructional old steel

Lesiuk

Katkowski

Correia

et al. 2018

IJSI

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Purpose The purpose of this paper is twofold: first, to observe an influence of different Composite Fibre-Reinforced Polymer (CFRP) patches, whose application to metals is very easy, in suppling and significantly elongating the service time; and second, the numerical calculation of the reduced stress intensity factor (SIF) range for strengthened cracked steel specimens. Design/methodology/approach One of the successful strengthening methods is the CFRP patching along the fatigue crack paths. The presented approach has been studied and discussed in this paper on the background of the numerical and experimental data. As it was expected, the proposed strengthening method is efficient and promising in case of the “immediate” repairs of critical members with cracks. The manufacturing process of specimens and test methodology as well as numerical approach to calculate SIFs for various reinforcements of steel specimens are presented. For this purpose, the Extended Finite Element Method was involved and described. Findings The main mechanism of fatigue crack growth retardation is associated with local ΔK reduction due to CFRP patches; any type of reinforcement results in an increase in af and a significant decrease in SIF values. The beach-marking method is described as a good, reliable and comprehensive method to capture the crack propagation in structures consisting of various materials and could be applied successfully for mixed mode testing. Originality/value A detailed experimental-numerical approach for fatigue crack growth in long-term operated structures made of steel is presented. The strengthening methodology is presented with consideration of the various CFRP patches configurations.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fatigue crack growth rate in CFRP reinforced constructional old steel

Lesiuk

Katkowski

Correia

et al. 2018

IJSI

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“…The behavior of the concrete`s deformation depends on its compaction, swelling, and creep [15]. Poor concreting workmanship reduced concrete serviceability reliability by reducing the permeability of the concrete.…”

Section: Concreting Workmanship 1) Concrete Compaction Practicementioning

confidence: 99%

Concreting Workmanship in Indonesia Study Case: Padang City, West Sumatra, Indonesia

Juliafad

Rani

Rifwan

et al. 2019

Int. J. Adv. Sci. Eng. Inf. Technol.

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This research gives information about the practice of concreting work in Reinforced Concrete (RC) building project in Indonesia. The study area is Padang City, which has suffered severe damages due to September 2009 Earthquake. The target interviewee is 100 builders who are constructing RC buildings. This interview together with observation was conducted by directly visiting the construction sites. While collecting information about the main factors which contribute to RC building quality, e.g., concrete mixing, compaction, concrete placing and curing, the information about the profile of the builders have been collected. The results show that the workers dominate the profile of builders in productive age with 30 years experiences on average. However, 90% of the builders yet experience any construction workshop. The concreting work, which is conducted by the builders, yet reaches the required standard. More than 50% of the builders produced concrete with the higher water-cement ratio, and almost 65% admitted that they add more water after concrete`s setting time is finished. There are 3common methods of concrete compaction which is used. 6% of the builders use a vibrator, 43% use the rodding method, 28% use hummer, and 8% choose to add more water to placed concrete to increase concrete workability. Meanwhile, more than 60% of the builders do not cure the placed concrete. The results show that construction practice that is conducted by the local builders is needed to be improved. The mistakes seem to be repeated over a generation since the source of learning of the builders is mainly from their senior builder (77.25%) and self-learning (2.5%). Only 7.5% that admitted they had experienced on construction workshop.

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“…Publications [34,35] presented some approaches for numerical analysis of repaired surface cracks with a composite patch. Estimation models for the treatment of defects such as cracks by injecting a compliant material have also been proposed [36][37][38]. Simulation of the solidity restoration of a cracked body using a contrastless filler was described by [39].…”

Section: Introductionmentioning

confidence: 99%

Stress Analysis in Damaged Pipeline with Composite Coating

Dutkiewicz

Dalyak²,

Shatskyi³

et al. 2021

Applied Sciences

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This paper studied the distribution of stresses near damage in the form of axial surface cracks in a pipeline reinforced with a spiral-wound composite coating. The authors applied the homogenization method to determine the effective elastic characteristics of a structurally anisotropic layered package. By means of the classical momentless theory of shells, it was established that the stress state of the coated intact pipe under the pressure of the pumped product depends on the parameters of the geometry of the capacity strip, as well as on the component composition of the heterogeneous coating. The finite element method was applied to solve the problem of plane deformation of a piecewise homogeneous ring with an internal crack perpendicular to the interface. This problem assumes the linearity of the materials and the ideal mechanical contact with the layers. The effect of the composite coating and the size of the damage on the magnitudes of the energy flow into the crack tip, and on the stress intensity factor, was studied in detail. Various variants of the coating were considered, namely, winding of the coating on an unloaded pipe and reinforcement of the pipe under repair pressure.

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Injection Technologies for the Repair of Damaged Concrete Structures

Cited by 33 publications

References 5 publications

Fatigue crack growth rate in CFRP reinforced constructional old steel

Fatigue crack growth rate in CFRP reinforced constructional old steel

Concreting Workmanship in Indonesia Study Case: Padang City, West Sumatra, Indonesia

Stress Analysis in Damaged Pipeline with Composite Coating

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