Acoustic Emission Monitoring of High-Strength Concrete Columns Subjected to Compressive Axial Loading

Eid, Rami; Muravin, Boris; Kovler, Konstantin

doi:10.3390/ma13143114

Cited by 6 publications

(2 citation statements)

References 23 publications

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“…Hence, it is difficult to distinguish AE events (due to microcracks) from background noises during the initial stage of loading. This is because most AE events occur just before the propagation of microcracks [6]. On the other hand, the active techniques based on using ultrasonic sensors are more reliable to detect cracks due to the relationship between ultrasonic wave propagation and initiation of cracks [7].…”

Section: Introductionmentioning

confidence: 99%

Damage Detection in Multiple RC Structures Based on Embedded Ultrasonic Sensors and Wavelet Transform

Chakraborty¹,

Wang

Stolinski³

2021

Buildings

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This paper summarizes the results of research aimed at assessing cracks in reinforced concrete structures using embedded ultrasonic sensors. The diffuse ultrasonic waves were considered to evaluate the health status of the tested structures. There are different algorithms used to detect cracks in the structure, but most studies have been performed on benchmark reinforced concrete (RC) structures and in laboratory conditions. Since there were difficulties with the validity of damage detection in real structures in the presence of environmental changes and noises, the application of advanced signal processing methods was necessary. Therefore, the wavelet transform was applied to process ultrasonic signals acquired from multiple civil structures. It is shown that the ultrasonic sensors with an applied wavelet transform algorithm on collected signals can successfully detect cracks in the laboratory as well as in a real environment. Experimental results showed a perfect match for detecting damage and quasi-static load in the presence of environmental changes. The results were confirmed with other techniques. In addition, designing an extra filter for removing noises can be avoided by using the applied algorithms. The obtained results confirmed that diffuse ultrasonic sensor methodology with the proposed algorithm is useful and effective in monitoring real RC structures, and it is better than traditional techniques.

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Section: Introductionmentioning

confidence: 99%

Damage Detection in Multiple RC Structures Based on Embedded Ultrasonic Sensors and Wavelet Transform

Chakraborty¹,

Wang

Stolinski³

2021

Buildings

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“…Concrete is a quasi-brittle material, and its failure mode is not only affected by the strength level of concrete, but is also closely related to its stress state [1][2][3][4][5]. Studies have shown that, compared with ordinary concrete, high-strength concrete presents obvious brittle characteristics [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Energy Evolution Analysis and Brittleness Evaluation of High-Strength Concrete Considering the Whole Failure Process

Zhou

Cheng

et al. 2020

Crystals

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In this work, we aimed to solve the problems that exist in the brittleness evaluation method of high-strength concrete through a triaxial compression test of C60 and C70 high-strength concrete. Then, the relationship between the energy evolution of its elastic energy, dissipative energy, pre-peak total energy and additional energy and its axial strain, confining pressure, and concrete strength grade was analyzed. Taking the accumulation rate of pre-peak elastic strain energy and the dissipation rate of dissipative energy, and the release rate of post-peak elastic energy, as the evaluation indicators to characterize the brittleness of high-strength concrete. A brittleness evaluation method that reflects the whole failure process of high-strength concrete is proposed and verified by experiments. The results show that with the increase of the confining pressure, the proportion of elastic energy in the whole process of high-strength concrete failure gradually decreases. The storage rate of pre-peak elastic energy and the release rate of post-peak elastic energy are gradually reducing, the brittleness index gradually decreases, and the confining pressure inhibits the brittleness of high-strength concrete. Under the same confining pressure, the brittleness index of C70 concrete is greater than that of C60 concrete, which indicates that, with the increase of the strength grade, the brittleness level of concrete gradually increases and the ductility decreases. These findings have a certain theoretical significance for the scientific design of high-strength concrete structures and the improvement of their safety in the future.

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Green utilization of biomass by-product poplar leaf ash: A novel eco-friendly cementitious material for cement mortar replacement

Wang

Feng

et al. 2023

Construction and Building Materials

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Acoustic Emission Monitoring of High-Strength Concrete Columns Subjected to Compressive Axial Loading

Cited by 6 publications

References 23 publications

Damage Detection in Multiple RC Structures Based on Embedded Ultrasonic Sensors and Wavelet Transform

Damage Detection in Multiple RC Structures Based on Embedded Ultrasonic Sensors and Wavelet Transform

Energy Evolution Analysis and Brittleness Evaluation of High-Strength Concrete Considering the Whole Failure Process

Green utilization of biomass by-product poplar leaf ash: A novel eco-friendly cementitious material for cement mortar replacement

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