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

Minutolo, Vincenzo; Ronza, Stefania Di; Eramo, C.; Zona, Renato

doi:10.20944/preprints201906.0121.v1

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…Damaged buildings, monuments, cavities, and infrastructures are significantly increasing due to the broader exposed areas to natural hazards and due to the old age of the civil constructions and require a strong effort for their surveillance and maintenance. In this context, it becomes essential to develop innovative Early-Warning Systems (EWS), as well as Structural Health Monitoring and Reinforcement (SHMR), able to detect any anomalous behavior [6][7][8][9][10][11]. These systems contain conventional and unconventional, distributed, and local sensors.…”

Section: Introductionmentioning

confidence: 99%

NSHT: New Smart Hybrid Transducer for Structural and Geotechnical Applications

et al. 2020

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This work describes the application of a new transducer prototype for continuous monitoring in both the structural and geotechnical fields. The transducer is synthetically constituted by a wire of optical fiber embedded between two fiber tapes (fiberglass or carbon fiber) and glued by a matrix of polyester resin. The fiber optical wire ends have been connected to a control unit whose detection system is based on Brillouin optical time-domain frequency analysis. Three laboratory tests were carried out to evaluate the sensor’s reliability and accuracy. In each experiment, the transducer was applied to a sample of inclinometer casing sets in different configurations and with different constraint conditions. The experimental collected data were compared with theoretical models and with data obtained from the use of different measuring instruments to perform validation and calibration of the transducer at the same time. Several diagrams can compare the transducer and highlight its suitability for the monitoring and maintenance of structures. The characteristic of the transducer suggests its use as a mixed system for reinforcing and monitoring, especially in the lifetime maintenance of critical infrastructures such as transportation and service networks, and historical heritage.

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Section: Introductionmentioning

confidence: 99%

NSHT: New Smart Hybrid Transducer for Structural and Geotechnical Applications

et al. 2020

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Comparative Study of Destructive Method and Non-destructive with Ultra-Sonic Pulse Velocity Method

Katare,

Kundil Abhilash,

Helena Raj

et al. 2024

E3S Web Conf.

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The appropriate percentages of cement, fine aggregates, coarse aggregates, and water are utilized to make concrete. Due to its relatively low price and widespread availability, it is a ubiquitous building material. Concrete in its fresh state can also be molded into any desired shape and size. Strength and durability are two of concrete’s most important characteristics (particularly when used for structural purposes). Verify the concrete’s compressive strength before placing it under the expected loads. NDT methods, both destructive and non-destructive, can be used to assess the compressive strength of hardened concrete. A non- destructive test does not harm the concrete specimen, whereas a destructive test (DT) crushes the cast specimen until it breaks. In non-destructive testing, materials, components or assemblies are inspected, tested or evaluated without destroying their serviceability. This study compares the compressive strength of concrete utilising an ultrasonic pulse velocity approach, which is both destructive and non-destructive. Concrete cubes measuring 150 mm by 150 mm by 150 mm were created using the concrete mix grades 25N/mm2 and 30N/mm2, and they were allowed to cure for 28 days. There were 12 cubes produced and used for the study. The determine compressive strength between destructive and non -destructive (ultra-sonic pulse velocity) test method.

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Empirical models for non-destructive evaluation of in-situ compressive strength of structural concrete with the objective of encompassing global uncertainty factors

Debroy,

Sil

2024

Preprint

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The compressive strength of concrete, although, conventionally, used to be determined either by destructive tests of cubes cast in-situ, or from concrete cores extracted from an existing structure, can be easily estimated at present with the help of empirical correlations with inputs from non-destructive test results of Rebound Hammer and Ultrasonic Pulse Velocity. The main contribution of this paper lies in the proposition of empirical correlations for compressive strength determination from a global uncertainty perspective, not considered previously to the best of the authors’ knowledge. To fulfil this objective, correlation equations published worldwide for both univariate and bivariate relationships have been collected and the most suitable ones selected based on their statistical reliability. Further, linear and non-linear regression analysis have been performed on justifiably chosen datasets for the predictor variables. Finally, Linear, Polynomial, Power and Exponential models are developed with appreciable metrics outcomes for all three types of correlations and the best three models proposed after successful validation on country-wise in-situ data accumulated from various literatures.

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

Cited by 3 publications

References 5 publications

NSHT: New Smart Hybrid Transducer for Structural and Geotechnical Applications

NSHT: New Smart Hybrid Transducer for Structural and Geotechnical Applications

Comparative Study of Destructive Method and Non-destructive with Ultra-Sonic Pulse Velocity Method

Empirical models for non-destructive evaluation of in-situ compressive strength of structural concrete with the objective of encompassing global uncertainty factors

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