Study on Non-destructive Evaluation Methods for Quality of Vertical Joints Influencing Rebar Corrosion in Patch Repaired RC Members

MINAMIURA Nami, KAMADA Toshiro, HATTORI Shinichi, TERASAWA Koki, TANAKA Yuki

doi:10.11396/jjsndi.72.457

Bibliographic Information

Other Title

断面修復を施したRC 部材における鉄筋腐食に影響を及ぼす鉛直打継部の品質の非破壊評価方法

Abstract

<p>In this paper, non-destructive evaluation methods for the quality of vertical joints influencing rebar corrosion in patch repaired RC members were investigated. The relation between the quality of vertical joints and the generation of rebar corrosion due to salt attack was also confirmed. As a result, the bonding status at vertical joint was evaluated effectively using the difference of impedance before and after watering the joint by applying the two-electrode method. The quality of existing concrete was reflected in spectrum intensity by applying the impact elastic wave method. Furthermore, it was found that the difference of electric resistivity between the patch repaired part and the existing concrete was effective for evaluating rebar corrosion. These methods detected the difference of qualities of vertical joints in relation to the generation of corrosion. Finally, a concept flowchart for evaluating quality of vertical joints influencing rebar corrosion in patch repaired RC members was presented.</p>

Journal

Journal of The Japanese Society for Non-Destructive Inspection

Journal of The Japanese Society for Non-Destructive Inspection 72 (10), 457-482, 2023-10-01

The Japanese Society for Non-Destructive Inspection

Keywords

Details 詳細情報について

CRID: 1390579089766147584

DOI: 10.11396/jjsndi.72.457

ISSN: 03675866

Text Lang: ja

Data Source

JaLC

Abstract License Flag: Disallowed

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