Identification of active destructive processes in unloaded early-age concrete with the use of the acoustic emission method

Bacharz, Magdalena; Trąmpczyński, Wiesław

doi:10.1109/phm.2016.7819899

Cited by 2 publications

(10 citation statements)

References 5 publications

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“…Then the modified version of this method was applied to detect damage in young concrete [ 23 , 42 ].…”

Section: Methodsmentioning

confidence: 99%

“…There are four destructive processes, described in [ 2 , 3 , 4 , 7 ], which may be a source of AE in freshly made concrete before loading. In [ 42 , 43 , 45 ] damage processes were ascribed to four signal classes recorded in non-loaded concrete ( Table 4 ).…”

Section: Methodsmentioning

confidence: 99%

“… 1 The tests and analysis of W5 and W8 samples results were described in [ 45 ], 2 the test results of the B2 and B3 samples were described in [ 44 ]. …”

Section: Figurementioning

confidence: 99%

“…This indicates a significant impact of the heating and cooling cycles on damage processes development in the early-age concrete, which may influence the strength of hardened concrete. 1 The tests and analysis of W5 and W8 samples results were described in [45], 2 the test results of the B2 and B3 samples were described in [44].…”

Section: Destructive Processes Analysismentioning

confidence: 99%

“…The non-invasive acoustic emission method (modified IADP method—Identification of Active Destructive Processes method) presented in [ 42 , 43 , 44 ] has been shown to be suitable for investigating defect formation process at the early stage of hardening of young concrete.…”

Section: Introductionmentioning

confidence: 99%

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Acoustic Emission for Determining Early Age Concrete Damage as an Important Indicator of Concrete Quality/Condition before Loading

2020

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Phenomena occurring during the curing of concrete can decrease its mechanical properties, specifically strength, and serviceability, even before it is placed. This is due to excessive stresses caused by temperature gradients, moisture changes, and chemical processes arising during the concreting and in hardened concrete. At stress concentration sites, microcracks form in the interfacial transition zones (ITZ) in the early phase and propagate deeper into the cement paste or to the surface of the element. Microcracks can contribute to the development of larger cracks, reduce the durability of structures, limit their serviceability, and, in rare cases, lead to their failure. It is thus important to search for a tool that allows objective assessment of damage initiation and development in concrete. Objectivity of the assessment lies in it being independent of the constituents and additives used in the concrete or of external influences. The acoustic emission-based method presented in this paper allows damage detection and identification in the early age concrete (before loading) for different concrete compositions, curing conditions, temperature variations, and in reinforced concrete. As such, this method is an objective and effective tool for damage processes detection.

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“…Then the modified version of this method was applied to detect damage in young concrete [ 23 , 42 ].…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“… 1 The tests and analysis of W5 and W8 samples results were described in [ 45 ], 2 the test results of the B2 and B3 samples were described in [ 44 ]. …”

Section: Figurementioning

confidence: 99%

Section: Destructive Processes Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Acoustic Emission for Determining Early Age Concrete Damage as an Important Indicator of Concrete Quality/Condition before Loading

2020

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The Correlation between Shrinkage and Acoustic Emission Signals in Early Age Concrete

Bacharz

Trąmpczyński

2022

Materials

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This study analysed the processes of damage formation and development in early age unloaded concrete using the acoustic emission method (IADP). These are of great importance in the context of the durability and reliability of a structure, as they contribute to reducing its failure-free operation time. Concrete made with basalt aggregate and Portland or metallurgical cement cured under different conditions after demoulding was the test material. The obtained damage values were compared with the measured concrete shrinkage, and a shrinkage strain–acoustic emission signal (resulting from damage) correlation was found. The correlation allows easy measurement of damage level in the early period of concrete hardening, and consequently can be the basis of a non-destructive method.

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Identification of active destructive processes in unloaded early-age concrete with the use of the acoustic emission method

Cited by 2 publications

References 5 publications

Acoustic Emission for Determining Early Age Concrete Damage as an Important Indicator of Concrete Quality/Condition before Loading

Acoustic Emission for Determining Early Age Concrete Damage as an Important Indicator of Concrete Quality/Condition before Loading

The Correlation between Shrinkage and Acoustic Emission Signals in Early Age Concrete

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