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Dvořák, Richard
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Publications (6/6 displayed)
- 2023Classification of Thermally Degraded Concrete by Acoustic Resonance Method and Image Analysis via Machine Learningcitations
- 2021Effect of Hammer Type on Generated Mechanical Signals in Impact-Echo Testingcitations
- 2019Properties of concrete intended for further testing measured by the Impact-Echo and the ultrasonic pulse methodcitations
- 2018Acoustic non-destructive testing of high temperature degraded concrete with comparison of acoustic impedancecitations
- 2017Impact-Echo Method Used to Testing of High Temperature Degraded Concrete Composite of Portland Cement CEM I 42.5 R and Gravel Aggregate 8/16
- 2017Non-Destructive Testing of High Temperature Degraded Concrete Composite of Portland Cement CEM I 42.5 R and Gravel Aggregate 11/22 by Transverse Wavescitations
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document
Non-Destructive Testing of High Temperature Degraded Concrete Composite of Portland Cement CEM I 42.5 R and Gravel Aggregate 11/22 by Transverse Waves
Abstract
Paper focus on aplicability of non-destructive acustic method Impact-echo as diagnostic tool for assesment of high temperature degraded concrete. Presented results are based on testing the concrete beams of diametr 0.1 x 0.1 x 0.4 and degraded from 200 °C to 1200 °C by 200 °C steps. Measurement is based on testing transverse waves and two dominant frequencecies are observed in each measurement and compared with values of destructive tests as compressive strength and flexural strength. Corelation between both trends is observed and assest.