Structural Materials. Impact-Echo Technique for Grouting Performance in Post-Tensioning Duct.
نویسندگان
چکیده
منابع مشابه
Monitoring of Grouting Compactness in a Post-Tensioning Tendon Duct Using Piezoceramic Transducers
A post-tensioning tendon duct filled with grout can effectively prevent corrosion of the reinforcement, maintain bonding behavior between the reinforcement and concrete, and enhance the load bearing capacity of concrete structures. In practice, grouting of the post-tensioning tendon ducts always causes quality problems, which may reduce structural integrity and service life, and even cause acci...
متن کاملFinite Element Analysis of Grouting Compactness Monitoring in a Post-Tensioning Tendon Duct Using Piezoceramic Transducers
With the development of the post-tensioning technique, prestressed concrete structures have been widely used in civil engineering. To ensure the long-term effectiveness of the prestressed tendon, the grouting quality of the tendon duct is one of the important factors. However, it is still a challenge to monitor the grouting quality of post-tensioning tendon ducts, due to the invisibility of the...
متن کاملEvaluation of the Performance of Grouting Materials for Saturated Riprap
In this study, four types of grout were developed to evaluate the effect of grouting of saturated riprap layers on ground water flow. The developed types of grout are divided into a quick-setting type and a general-type, and also into high and low viscosities. A number of grout tests were performed in a model acrylic chamber, 0.4 m in diameter and 2.0 m in length, for visual observation of inje...
متن کاملWhat Is Post-tensioning?
December 2000 OVERVIEW Post-tensioning is a method of reinforcing (strengthening) concrete or other materials with high-strength steel strands or bars, typically referred to as tendons. Post-tensioning applications include office and apartment buildings, parking structures, slabs-on-ground, bridges, sports stadiums, rock and soil anchors, and water-tanks. In many cases, posttensioning allows co...
متن کاملSemi-Supervised Bayesian Classification of Materials with Impact-Echo Signals
The detection and identification of internal defects in a material require the use of some technology that translates the hidden interior damages into observable signals with different signature-defect correspondences. We apply impact-echo techniques for this purpose. The materials are classified according to their defective status (homogeneous, one defect or multiple defects) and kind of defec...
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ژورنال
عنوان ژورنال: Journal of the Society of Materials Science, Japan
سال: 1999
ISSN: 1880-7488,0514-5163
DOI: 10.2472/jsms.48.870