The Use of Destructive and Non-Destructive Testing in Concrete Strength Assessment for a School Building

Minutolo, Vincenzo; Ronza, Stefania Di; Eramo, C.; Ferla, Paolo; Palladino, S.; Zona, Renato

doi:10.34218/ijaret.10.6.2019.028

Cited by 11 publications

(7 citation statements)

References 15 publications

(39 reference statements)

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“…For the study of the in-situ concrete compressive strength at the age 1926th day, 18 cores with a diameter (D) Ø100 mm and depth ranging of 151 mm to 156 mm were drilled from the reinforced concrete beams (Figure 2 -a, b) from places without visible on the surfaces cracks, pores, cavities, defects and reinforcement [28][29][30]. The measurements were with accuracy up to 1 mm.…”

Section: Test Specimens (Cores)mentioning

confidence: 99%

Research on concrete compressive strength in existing reinforced concrete elements with Schmidt hammer, ultrasonic pulse velocity method and destructive testing of cores

Ivanchev

2022

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

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Concrete is a widely used material in construction. Quality control, maintenance and extending its service life are major issues after the construction stage and during the service of reinforced concrete buildings and facilities. This article presents the author’s experimental results for determining the compressive strength of concrete for tests on 12 reinforced concrete beams at the age of concrete 1926th day. In previous studies, some of the beams were loaded to a stage corresponding to the yield strength of the longitudinal tensile reinforcement, and others to a loading stage before yield, reaching a maximum crack width of 0.3 mm. The reinforced concrete elements were kept indoors for two years, and for the next more than three years they were left outdoors, exposed to external atmospheric influences. In the research was used combination of non-destructive and partially destructive techniques. The compressive strength of the concrete was determined using the method of elastic rebound (Schmidt hammer), ultrasonic pulse velocity method and partially destructive techniques - core sampling. The relative errors in the values of compressive strength obtained by the different methods were calculated. A comparative analysis of the experimentally obtained results by different methods was made. The tests were performed according to European standards for non-destructive and destructive testing of reinforced concrete structures.

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Section: Test Specimens (Cores)mentioning

confidence: 99%

Research on concrete compressive strength in existing reinforced concrete elements with Schmidt hammer, ultrasonic pulse velocity method and destructive testing of cores

Ivanchev

2022

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

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“…The accuracy of these decisions at each stage of product quality enhancement directly impacts the overall quality and customer satisfaction (Alt et al, 2019;Ostasz et al, 2022a;Pacana et al, 2020;Siwiec et al, 2021cSiwiec et al, , 2021d. Initially, decisions are typically made after product quality control, often involving non-destructive testing (NDT) (Katunin et al, 2021;Krajewska-Śpiewak et al, 2021;Minutolo et al, 2019). However, these controls only identify incompatibilities and do not determine their root causes (Jarosińska & Berczyński, 2021;Khedmatgozar et al, 2021;.…”

Section: Introductionmentioning

confidence: 99%

“…However, these tools were employed selectively during certain stages of the product quality management process. Furthermore, some of these tools are subjective in nature, as highlighted by Minutolo et al (2019). Interestingly, no previous attention has been given to the integration of multicriteria decision methods (MCDM) (Parkan & Wu, 2000) throughout the entire quality management process, alongside conventional quality management tools.…”

Section: Introductionmentioning

confidence: 99%

Fuzzy Multi-criteria Decision Model to Support Product Quality Improvement

Siwiec,

Gawlik,

Pacana

2023

Management and Production Engineering Review

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Improving product quality while making decisions remains a challenge. The objective of this research was to develop a model that supports the precise enhancement of product quality through comprehensive analysis of possibilities, product incompatibilities, root causes, and recommended improvement actions. The model incorporated various tools and methods such as the SMARTER method, expert team selection, brainstorming, Ishikawa diagram, 5M+E rule, FAHP, and FTOPSIS methods. The study demonstrated that integrating quality management tools and decision-making methods into a unified model enables the accurate prioritization of activities for product quality management. This integrated approach represents the novelty of this research. The model was evaluated using a mechanical seal made of 410 alloy. The research findings can be valuable to enterprises seeking to enhance product quality at any stage of production, particularly for modified or new products.

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“…An extensive chapter in the limit analysis is devoted to the mechanics of masonry structures following the work of Heyman [6], who extends the primary approach of limit analysis to the not tensile resistant materials (NTRM) modeling masonry. The limit analysis, and in a more general sense the plasticity modeling, is highly required when one must interpret the results of monitoring campaign since the structures during their life generally undergo permanent strain and cracks [7,8]. In the field of the biomechanics, the limit equilibrium is used as a primary tool to assess the fracture risk of prosthesis implants and relative optimization strategies as reported in [9,10,11].…”

Section: Introductionmentioning

confidence: 99%

Lower bound limit analysis through discontinuous finite elements and semi-analytical procedures

Zona

2023

Theoretical and Applied Mechanics - AIMETA 2022

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Abstract. This work deals with the limit analysis of structures through the lower-bound theorem, using dislocations based finite elements and eigenstress modelling. The lower bound approach is based on the knowledge of the self-equilibrated stresses that constitutes the basis of the domain where the optimal solution should be searched. A twofold strategy can be used to get self-equilibrated stresses, i.e., eigenstresses. The first one pursues the calculation of the self-equilibrated stress through the numerical approximation of the differential equilibrium equation in homogeneous form through an a posteriori discretization that used polynomial representation of finite degree. The second one consists of Finite Element implementation of the self-equilibrated stress calculation by discontinuous finite elements based on Volterra's dislocations theory. Both the formulations are written in terms of the strain and precisely in terms of the strain nodal displacement parameters. Consequently, it is possible to formulate an iterative procedure starting from the knowledge of the dislocation at the incoming collapse, in Melan’s residual sense, and calculate the structural ductility requirement. Several numerical examples are presented to confirm the method's feasibility.

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The Use of Destructive and Non-Destructive Testing in Concrete Strength Assessment for a School Building

Cited by 11 publications

References 15 publications

Research on concrete compressive strength in existing reinforced concrete elements with Schmidt hammer, ultrasonic pulse velocity method and destructive testing of cores

Research on concrete compressive strength in existing reinforced concrete elements with Schmidt hammer, ultrasonic pulse velocity method and destructive testing of cores

Fuzzy Multi-criteria Decision Model to Support Product Quality Improvement

Lower bound limit analysis through discontinuous finite elements and semi-analytical procedures

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