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Date of download: 3/3/2018 Copyright © ASME. All rights reserved.

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1 Date of download: 3/3/2018 Copyright © ASME. All rights reserved. From: Estimation of Corrosion Damage in Steel Reinforced Mortar Using Guided Waves J. Pressure Vessel Technol. 2005;127(3): doi: / Figure Legend: Schematic diagram of ultrasonic through transmission experimental set up for indirect and direct transmission

2 Date of download: 3/3/2018 Copyright © ASME. All rights reserved. From: Estimation of Corrosion Damage in Steel Reinforced Mortar Using Guided Waves J. Pressure Vessel Technol. 2005;127(3): doi: / Figure Legend: Progressive degradation of concrete reinforcement due to corrosion

3 Date of download: 3/3/2018 Copyright © ASME. All rights reserved. From: Estimation of Corrosion Damage in Steel Reinforced Mortar Using Guided Waves J. Pressure Vessel Technol. 2005;127(3): doi: / Figure Legend: Reduction of cross-sectional area caused by pitting corrosion of the reinforcing steel bar

4 Date of download: 3/3/2018 Copyright © ASME. All rights reserved. From: Estimation of Corrosion Damage in Steel Reinforced Mortar Using Guided Waves J. Pressure Vessel Technol. 2005;127(3): doi: / Figure Legend: Qualitative variation of bond strength as a function of percentage of corrosion

5 Date of download: 3/3/2018 Copyright © ASME. All rights reserved. From: Estimation of Corrosion Damage in Steel Reinforced Mortar Using Guided Waves J. Pressure Vessel Technol. 2005;127(3): doi: / Figure Legend: Theoretical attenuation curves for the F(1,1) mode for a 1∕2inch (13 mm) diameter steel cylindrical bar in vacuum and the same bar immersed in water. The curves were calculated using DISPERSE. An experimentally obtained value of the attenuation of the F(1,1) mode at 80 kHz for the same bar immersed in water is also shown.

6 Date of download: 3/3/2018 Copyright © ASME. All rights reserved. From: Estimation of Corrosion Damage in Steel Reinforced Mortar Using Guided Waves J. Pressure Vessel Technol. 2005;127(3): doi: / Figure Legend: Group velocity vs frequency for 1∕2inch (13 mm) diameter cylindrical steel bar in vacuum with experimentally measured values at 40, 80, and 140 kHz using both direct and indirect transducer configurations

7 Date of download: 3/3/2018 Copyright © ASME. All rights reserved. From: Estimation of Corrosion Damage in Steel Reinforced Mortar Using Guided Waves J. Pressure Vessel Technol. 2005;127(3): doi: / Figure Legend: Accelerated corrosion testing setup showing the specimen partially submerged in water, the copper mesh, and the transducer locations in indirect configuration

8 Date of download: 3/3/2018 Copyright © ASME. All rights reserved. From: Estimation of Corrosion Damage in Steel Reinforced Mortar Using Guided Waves J. Pressure Vessel Technol. 2005;127(3): doi: / Figure Legend: Measured corrosion vs predicted corrosion using Faraday’s law for accelerated corrosion testing of reinforced mortar specimens

9 Date of download: 3/3/2018 Copyright © ASME. All rights reserved. From: Estimation of Corrosion Damage in Steel Reinforced Mortar Using Guided Waves J. Pressure Vessel Technol. 2005;127(3): doi: / Figure Legend: Signal energy vs time using 80 kHz input signal during wetting of mortar. The variation of signal energy illustrates the changes in material properties in mortar as water permeates the pores. The energy drop at point C reflects the presence of water in the pores adjacent to the steel bar.

10 Date of download: 3/3/2018 Copyright © ASME. All rights reserved. From: Estimation of Corrosion Damage in Steel Reinforced Mortar Using Guided Waves J. Pressure Vessel Technol. 2005;127(3): doi: / Figure Legend: Signal energy and current vs percentage of corrosion for accelerated corrosion specimen using 80 kHz input signal. The changes in energy and in current reflect different stages of corrosion, including accumulation of corrosion product between the reinforcing steel bar and the mortar, cracking of the surrounding mortar, and ingress of water.


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