J. Ocean Eng. Technol. Search

CLOSE


J. Ocean Eng. Technol. 1999;13(2):108-115.    

The Development of Measuring Method of Coated Steel Corrosion in Mortar by Transient Electro-Magnetic(TEM) Method
Lee, Sang-Ho;Han, Jeong-Sub;
과도전자탐사법에 의한 모르타르 중의 코팅 철근의 부식 측정 방법 개발
이상호;한정섭;
동아대학교 해양공학과;동아대학교 토목${cdot}$해양공학부;
© 1999 The Korean Society of Ocean Engineers     Open access / Under a Creative Commons License
Keywords: Coated Steel Corrosion, Transient Electro-Magnetic Method, Secondary Electro Motive Force
핵심용어: 코팅철근의 부식, 과도전자탐사법, 2차 기전력
Abstract
To study measurement of coated steel corrosion in mortar, a transient electro-magnetic(TEM) method was adapted. The sensors were made of enamelled wire with diameter of 0.25mm(transmitter), 0.1mm(receiver) and the secondary electro motive force(EMF) was measured with SIROTEMIII. The sensors configuration was used as in loop configuration. After coated steels were corroded by the salt spray during 3, 7, 15, 25days, they were embedded in mortar which were made from sand : cement : water ratio of 2 : 1 :0.5. To investigate coated steel corrosion in mortar, the sensors were used. ( sensorl - $T_x$ : $4{Omega}$, $R_x$ : $10{Omega}$, $3{times}3cm$, sensor2 - $T_x$ : $8{Omega}$, $R_x$ : $10{Omega}$, $3{times}3cm$, sensor3 - $T_x$ : $4{Omega}$, $R_x$ : $10{Omega}$, $6{times}6cm$, sensor4 - $T_x$ : $8{Omega}$, $R_x$ : $10{Omega}$, $6{times}6cm$). The obtained results showed that the secondary EMF was decreased with specimens of 3, 7days corroded coationg steel in mortar and then increased with specccimens of 15, 25days corroded one. And it was confirmed that measurement of coated steel corrosion in mortar by a transient electro-magnetic(TEM) method is possible.


ABOUT
BROWSE ARTICLES
ARTICLE CATEGORY

Browse all articles >

PUBLICATION ETHICS
FOR CONTRIBUTORS
Editorial Office
President Office BD Rm. 1302, 13 Jungang-daero 180beon-gil, Dong-gu, Busan 48821, Republic of Korea
Tel: +82-51-759-0656    Fax: +82-51-759-0656    E-mail: ksoehj@ksoe.or.kr                

Copyright © 2024 by The Korean Society of Ocean Engineers.

Developed in M2PI

Close layer
prev next