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Advances in Materials Science and Engineering
Volume 2016 (2016), Article ID 8230398, 7 pages
http://dx.doi.org/10.1155/2016/8230398
Research Article

Evaluation of Subsurface Damage in Concrete Deck Joints Using Impact Echo Method

1Sandia National Laboratories, Kansas City, MO 64147, USA
2Department of Architectural Engineering, Gachon University, Seongnam, Gyeonggi-do 461-701, Republic of Korea

Received 14 January 2016; Accepted 5 May 2016

Academic Editor: Kaveh Edalati

Copyright © 2016 Larry Rickard and Wonchang Choi. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Many factors can affect the overall performance and longevity of highway bridges, including the integrity of their deck joints. This study focuses on the evaluation of subsurface damage in deteriorated concrete deck joints, which includes the delamination and corrosion of the reinforcement. Impact echo and surface wave technology, mainly a portable seismic property analyzer (PSPA), were employed to evaluate the structural deficiency of concrete joints. Laboratory tests of core samples were conducted to verify the nondestructive test results. The primary advantage of the PSPA as a bridge assessment tool lies in its ability to assess the concrete’s modulus and to detect subsurface defects at a particular point simultaneously.