Impact of Microstructural Changes in Concrete on Coda Waves

Name: Impact of Microstructural Changes in Concrete on Coda Waves
Brand: DIN Media Verlag
SKU: 9783410659525
Price: 32991 HUF
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Szerző: DAfStb

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Kötés: Puha kötésű

Kiadó: DIN Media Verlag

Elérhetőség: Beszállítói készleten alacsony példányszámban

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Monitoring the condition of concrete structures is a macrosocial task for safety and economic reason...

Információk a könyvről

Szerző

DAfStb

Nyelv

Angol

Kötés

Könyv - Puha kötésű

Kiadva

2025

oldal

120

EAN

9783410659525

ISBN

3410659528

Enbook ID

48082369

Kiadó

DIN Media Verlag

Súly

374

Méretek

210 x 297

Teljes leírás

Monitoring the condition of concrete structures is a macrosocial task for safety and economic reasons that increasingly uses techniques from the field of non-destructive testing. A promising technique for structural health monitoring of heterogeneous materials such as concrete or reinforced concrete is coda wave interferometry, as it is sensitive to even weak changes in the material and can therefore be used as an early warning system for damage. The technique is based on comparing two ultrasonic wave forms to derive a change in velocity. The change is particularly well measurable and resolvable in heterogeneous media due to strong scattering in late arriving wave packages, the coda. The objective of the study was to investigate the relationships between transient impacts, such as temperature, relative humidity, and external stress changes, on the velocity change of coda waves propagating in concrete. Furthermore, long-term phenomena such as shrinkage, creep, and hydration were characterized using the relative velocity change. The investigations published in three articles showed that temperature and stress changes in the elastic range are linearly related to the velocity change of the coda. The interaction of temperature and humidity, on the other hand, led to a non-linear change. Furthermore, the results demonstrated that shrinkage, creep, and hydration can be described not only by conventional measurement techniques but also by means of coda wave interferometry.

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Impact of Microstructural Changes in Concrete on Coda Waves

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