Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/55256
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dc.contributor.authorSagar, Remalli Vidya-
dc.date.accessioned2020-09-23T09:48:50Z-
dc.date.available2020-09-23T09:48:50Z-
dc.date.issued2020-06-
dc.identifier.issn0975-1017 (Online); 0971-4588 (Print)-
dc.identifier.urihttp://nopr.niscair.res.in/handle/123456789/55256-
dc.description538-553en_US
dc.description.abstractThis article presents a study on crack mode classification in cementitious materials under uniaxial compression using gaussian mixture modeling (GMM) of acoustic emissions approach. To implement a retrofitting method to an in-service concrete structure, a prior knowledge about the type of crack developed in the concrete structure is useful. Because, occurrence of AE events during fracture process in solids is random, a probabilsitc method has been required to classify the AE sources related to different types of cracks. In this study, a monotonically increasing unconfined uniaxial compressive load has been applied on different cylindrical specimens of plain cement concrete cast with maximum coarse aggregate size of 20 mm, 12.5 mm and cement mortar to study crack classification. It has been observed that the slope of the line separating the AE data clusters belonging to tensile and shear cracks is more steep for the concrete specimen containing 20 mm maximum coarse aggregate when compared to the concrete specimen containing 12.5 mm maximum coarse aggregate and cement mortar. This indicated that as the coarse aggregate size in concrete increased, the generated AE events related to shear cracking decreased. Also, the AE based b-value has reached minimum at the peak load. At the time of failure, AE related to shear cracking has increased sharply.en_US
dc.language.isoen_USen_US
dc.publisherNISCAIR-CSIR, Indiaen_US
dc.rights CC Attribution-Noncommercial-No Derivative Works 2.5 Indiaen_US
dc.sourceIJEMS Vol.27(3) [June 2020]en_US
dc.subjectCementitious materialsen_US
dc.subjectAggregatesen_US
dc.subjectCompressive strengthen_US
dc.subjectCracks and crackingen_US
dc.subjectFailureen_US
dc.subjectMortaren_US
dc.subjectNon-destructive testingen_US
dc.subjectStressen_US
dc.titleA probabilistic model of acoustic emissions generated during compression test of cementitious materials for crack mode classificationen_US
dc.typeArticleen_US
Appears in Collections:IJEMS Vol.27(3) [June 2020]

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