Results 261 to 270 of about 15,172 (317)
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Construction and Building Materials, 2021
Replacement of natural coarse aggregate with lightweight aggregate (LWA) offers not only the specific properties of concrete such as thermal, acoustic properties, or lighter weight concrete but is also dealing with wasted materials recycling and natural ...
Yifan Zhang, F. Aslani
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Replacement of natural coarse aggregate with lightweight aggregate (LWA) offers not only the specific properties of concrete such as thermal, acoustic properties, or lighter weight concrete but is also dealing with wasted materials recycling and natural ...
Yifan Zhang, F. Aslani
semanticscholar +1 more source
Ultrasonics, 2016 The aim of this study is to establish a correlation between physical properties and ultrasonic pulse velocity of clay samples fired at elevated temperatures. Brick-making clay and pottery clay were studied for this purpose.
Ilker Özkan
exaly +2 more sources
Prediction of concrete strength using ultrasonic pulse velocity and artificial neural networks [PDF]
Ultrasonics, 2009 Ultrasonic pulse velocity technique is one of the most popular non-destructive techniques used in the assessment of concrete properties. However, it is very difficult to accurately evaluate the concrete compressive strength with this method since the ...
Göran Türk
exaly +2 more sources
Metrological Perspective of Ultrasonic Pulse Velocity Measurement Technique
MAPANnull Piyush, Sanjay Yadav, P. K. Dubey
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Image matching for pulse echo measurement of ultrasonic velocity
Image and Vision Computing, 1983Abstract Diagnostic ultrasound is a pulse echo imaging system similar to radar, sonar or exploration seismology. It has its most widespread use in the examination of pregnancy, but also finds routine use in the examination of the organs of the upper abdomen and its use is increasing in other areas. Using current techniques the information obtained is
D. E. Robinson +2 more
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Effect of stresses on the ultrasonic pulse velocity in concrete
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1991Since the stress-strain curve of a concrete is not linear, at least under the first loading, one would expect that the presence of stresses would reduce the velocity of ultrasonic pulses in the concrete. The experimental investigation of this expectation is the topic of this paper.
Sandor Popovics, John S. Popovics
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Predicting Ultrasonic Pulse Velocity for Concrete Health Monitoring
ACI Materials JournalMohammad Rahmati, Vahab Toufigh
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Ultrasonic pulse velocity as a rock stress sensor
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1974A method of measuring with nanosecond precision the times of flight of ultrasonic pulses over distances of a few metres in rock in situ has been developed by using a multiple sampling technique, with pulses repeated at intervals of 20 msec and on-line averaging of many individual readings. In an ideal situation the measurements are sensitive to changes
Gladwin M.T., Stagey F.D.
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Dispersion of Ultrasonic Pulse Velocity in Cylindrical Rods
The Journal of the Acoustical Society of America, 1955The velocities of pulsed longitudinal and shear waves in cylindrical rods of aluminum alloy, brass, copper, and steel were measured by using both the pulse echo and pulse transmission methods. It is found that for pulsed longitudinal waves the measured velocity not only depends upon the elastic constants of the medium but also on the ratio between the ...
L. Y. Tu, J. N. Brennan, J. A. Sauer
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Materials Today: Proceedings, 2020
The healing proportion of strengthening cracks in buildings such as Reinforced cement concrete (RCC) Houses, RCC Pipes, Canal Lining, Pavement etc. has been increased in the ongoing bacterial concrete. In order to fix the cracks in the concrete, it needs
C. V. Prasad, T. S. Lakshmi
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The healing proportion of strengthening cracks in buildings such as Reinforced cement concrete (RCC) Houses, RCC Pipes, Canal Lining, Pavement etc. has been increased in the ongoing bacterial concrete. In order to fix the cracks in the concrete, it needs
C. V. Prasad, T. S. Lakshmi
semanticscholar +1 more source