Evaluation of Repair Effect for Deteriorated Concrete Piers of Intake Dam Using AE Activity

Abstract:

Article Preview

Deteriorated concrete structures are repaired by means of grouting. In order to evaluate the repair effectiveness two NDT techniques namely seismic tomography and acoustic emission are applied. Using traveling time of elastic waves, structural velocity is estimated. AE activity is monitored along with water pressurization of the permeability test. As a result, contrary to the common expectation that the velocity increase after filling with grouting agent, enormous amount of velocity drop was obtained after repair due to the incomplete developing process of grout material, whereas AE activity showed dramatic decrease after repair. Furthermore after comparison of those results to the quantity of grouting material, it became clear that damage indices based on AE activity exhibited well the actual damage of concrete structures.

Info:

Periodical:

Advanced Materials Research (Volumes 13-14)

Edited by:

R. Pullin, K.M. Holford, S.L. Evans and J.M. Dulieu-Barton

Pages:

175-180

DOI:

10.4028/www.scientific.net/AMR.13-14.175

Citation:

T. Shiotani "Evaluation of Repair Effect for Deteriorated Concrete Piers of Intake Dam Using AE Activity", Advanced Materials Research, Vols. 13-14, pp. 175-180, 2006

Online since:

February 2006

Authors:

Export:

Price:

$35.00

In order to see related information, you need to Login.