A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Acoustic Nondestructive Testing of Steel Reinforcing Members in Concrete
Many concrete structures contain internal pre- and post-tensioned steel structural members that are subject to fracturing and corrosion. Corrosion of steel components can lead to loss of tension and consequent severe problems, such as cracking of the concrete or fracturing of the steel. This work addresses the problem of determining tension in embedded pre- and post- tensioned rods. The major problem with existing test techniques is that they use indirect and non-quantitative methods to determine whether there has been a loss of tension. We have developed an acoustic technique and sensor to make quantitative tension measurements in an embedded tensioned steel member. Although initially developed for civil works applications, this new acoustic technique is directly applicable to any concrete structure with steel members in tension, including bridges and heavily reinforced bunkers. Acoustic technology provides a method to measure the tension quickly, accurately, and quantitatively. Researchers at ERDC-CERL developed a theory and measurement technique for determining tensile stress in steel directly from ultrasonic measurements, and a procedure to simulate the ultrasonic environment inside a steel rod. An invention disclosure has been submitted on this acoustic technology.
Acoustic Nondestructive Testing of Steel Reinforcing Members in Concrete
Many concrete structures contain internal pre- and post-tensioned steel structural members that are subject to fracturing and corrosion. Corrosion of steel components can lead to loss of tension and consequent severe problems, such as cracking of the concrete or fracturing of the steel. This work addresses the problem of determining tension in embedded pre- and post- tensioned rods. The major problem with existing test techniques is that they use indirect and non-quantitative methods to determine whether there has been a loss of tension. We have developed an acoustic technique and sensor to make quantitative tension measurements in an embedded tensioned steel member. Although initially developed for civil works applications, this new acoustic technique is directly applicable to any concrete structure with steel members in tension, including bridges and heavily reinforced bunkers. Acoustic technology provides a method to measure the tension quickly, accurately, and quantitatively. Researchers at ERDC-CERL developed a theory and measurement technique for determining tensile stress in steel directly from ultrasonic measurements, and a procedure to simulate the ultrasonic environment inside a steel rod. An invention disclosure has been submitted on this acoustic technology.
Acoustic Nondestructive Testing of Steel Reinforcing Members in Concrete
M. K. McInerney (author) / S. W. Morefield (author) / V. F. Hock (author) / J. M. Carlyle (author)
2008
9 pages
Report
No indication
English
Construction Materials, Components, & Equipment , Construction Equipment, Materials, & Supplies , Nondestructive Testing , Iron & Iron Alloys , Steel , Reinforcing materials , Nondestructive testing , Acoustics , Reinforced concrete , Ultrasonics , Tension , Rods , Fortifications , Test methods , Structures , Cracks , Tensile stress , Corrosion , Reprints , Symposia , Embedded tensioned steel , Erdc-cerl(Engineer research and development center contruction engineering research laboratory) , Reinforcing rods
Nondestructive Measurement of Corrosion State of Reinforcing Steel in Concrete
| Online Contents | 1998
Nondestructive Measurement of Corrosion State of Reinforcing Steel in Concrete
| British Library Online Contents | 1998