Internal Damping Ratio of Normal- and High-Strength Concrete Considering Mechanical Damage Evolution

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dc.contributor.authorGidrao G.D.M.S.
dc.contributor.authorKrahl P.A.
dc.contributor.authorBosse R.M.
dc.contributor.authorSilvestro L.
dc.contributor.authorRibeiro R.S.
dc.contributor.authorLima G.T.D.S.
dc.contributor.authorCarrazedo R.
dc.date.accessioned2024-10-01T06:10:29Z
dc.date.available2024-10-01T06:10:29Z
dc.date.issued2024
dc.description.abstract© 2024 by the authors.This paper significantly extends investigations into internal damping ratios in both undamaged and damaged conditions for normal-strength concretes (NSCs) and high-strength concretes (HSCs). This study examines concretes with compressive strengths ranging from 42 to 83 MPa. Cyclic loads were applied using a servo-controlled hydraulic testing machine, and for each cyclic step, the dynamic elastic modulus ((Formula presented.)) and internal damping ratio ((Formula presented.)) were determined through acoustic tests. The results show that the normal-strength concretes ((Formula presented.) MPa) exhibited an undamaged internal damping ratio of (Formula presented.), reaching a maximum of (Formula presented.) at a damage index of 0.8. Conversely, the high-strength concrete mixtures ((Formula presented.) MPa) showed an undamaged internal damping ratio of (Formula presented.), with a peak value of (Formula presented.) at a damage index of 0.32. The initial internal damping values are influenced by porosity and transition zones, which affect the material behavior under cyclic loads. Progressive damage leads to increased Coulomb damping due the cracking process. Few studies have quantified and comprehended the internal damping ratio under cyclic loading-induced damage, and this research advances our understanding of NSC and HSC behavior under dynamic excitation and damage evolution, especially in impact scenarios.
dc.description.issuenumber8
dc.description.volume14
dc.identifier.doi10.3390/buildings14082446
dc.identifier.issnNone
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/39468
dc.relation.ispartofBuildings
dc.rightsAcesso Aberto
dc.subject.otherlanguageacoustic tests
dc.subject.otherlanguagedamage evolution
dc.subject.otherlanguagehigh-strength concretes
dc.subject.otherlanguageinternal damping ratio
dc.subject.otherlanguageusual concretes
dc.titleInternal Damping Ratio of Normal- and High-Strength Concrete Considering Mechanical Damage Evolution
dc.typeArtigo
local.scopus.citations1
local.scopus.eid2-s2.0-85202439432
local.scopus.subjectAcoustic tests
local.scopus.subjectDamage evolution
local.scopus.subjectDamage index
local.scopus.subjectDamping ratio
local.scopus.subjectHigh strength concretes
local.scopus.subjectInternal damping
local.scopus.subjectInternal damping ratio
local.scopus.subjectNormal strength concrete and high strength concretes
local.scopus.subjectNormal- and high-strength concretes
local.scopus.subjectUsual concrete
local.scopus.updated2025-06-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85202439432&origin=inward
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