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A platform for research: civil engineering, architecture and urbanism
Ultrasonic attenuation changes with damage level in concrete
Ultrasonic attenuation has been shown to increase significantly as distributed damage in concrete increases. In this study, concrete prisms were compressed at several different load levels to induce distributed damage. Attenuation was found to increase significantly as distributed damage progresses. The changes in attenuation are greater for low water cement ratio concrete than for high water cement ratio concrete. Some variation in attenuation was observed as power level was changed. A small amount of variation was observed with power level changes over all damage levels. Additionally, three of the four specimens tested demonstrated a power sensitive attenuation mechanism which occurred at a specific power level and damage level. The variation in attenuation was greater for high water cement ratio concrete than the changes for low water cement ratio concrete. Additionally, the variation in attenuation was greater for low damage levels than for higher levels of damage. Averaging the results obtained from using several power levels was useful to reduce the effects of power specific attenuation mechanisms.
Ultrasonic attenuation changes with damage level in concrete
Ultrasonic attenuation has been shown to increase significantly as distributed damage in concrete increases. In this study, concrete prisms were compressed at several different load levels to induce distributed damage. Attenuation was found to increase significantly as distributed damage progresses. The changes in attenuation are greater for low water cement ratio concrete than for high water cement ratio concrete. Some variation in attenuation was observed as power level was changed. A small amount of variation was observed with power level changes over all damage levels. Additionally, three of the four specimens tested demonstrated a power sensitive attenuation mechanism which occurred at a specific power level and damage level. The variation in attenuation was greater for high water cement ratio concrete than the changes for low water cement ratio concrete. Additionally, the variation in attenuation was greater for low damage levels than for higher levels of damage. Averaging the results obtained from using several power levels was useful to reduce the effects of power specific attenuation mechanisms.
Ultrasonic attenuation changes with damage level in concrete
Änderung der Ultraschallschwächung mit der Schadenshöhe in Beton
Woodward, C. (author) / Roe, S.E. (author) / Cramer, M. (author)
2007
5 Seiten, 4 Bilder, 7 Quellen
Conference paper
Storage medium
English
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