{"title":"Considerations to avoid corrosion rate estimate error of the reinforcing steel if it is based only on concrete’s electrical resistivity.","authors":"A. Torres‐Acosta","doi":"10.5006/4482","DOIUrl":null,"url":null,"abstract":"\n In recent years, the use of electrical resistivity (ρ) of concrete as a design parameter has intensified, ranging from its use as a durability index in laboratories for the characterization of cement-based materials, as well as in inspection of existing structures, in order to diagnose the pathological problems they present. It has also being used as a durability index to accept or reject a concrete mixture during the construction of concrete infrastructure that it should comply as a durable concrete mixture. ρ of concrete has also been used as an indirect measure of the corrosion rate (icorr) of the embedded steel in concrete to determine not only the time of corrosion initiation, but also the propagation time of corrosion of reinforcing or prestressing steel. This allows indirect measurements of icorr from ρ measurements on the concrete surface without the need to connect the reinforcing or prestressing steel to the measuring equipment. The present investigation presents some results from the literature that corroborate this direct correlation between ρ of concrete and icorr of the embedded steel for some exposure conditions, and some considerations are discussed to avoid possible measurement interpretation errors if this correlation is used in real structures.","PeriodicalId":10717,"journal":{"name":"Corrosion","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Corrosion","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.5006/4482","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
In recent years, the use of electrical resistivity (ρ) of concrete as a design parameter has intensified, ranging from its use as a durability index in laboratories for the characterization of cement-based materials, as well as in inspection of existing structures, in order to diagnose the pathological problems they present. It has also being used as a durability index to accept or reject a concrete mixture during the construction of concrete infrastructure that it should comply as a durable concrete mixture. ρ of concrete has also been used as an indirect measure of the corrosion rate (icorr) of the embedded steel in concrete to determine not only the time of corrosion initiation, but also the propagation time of corrosion of reinforcing or prestressing steel. This allows indirect measurements of icorr from ρ measurements on the concrete surface without the need to connect the reinforcing or prestressing steel to the measuring equipment. The present investigation presents some results from the literature that corroborate this direct correlation between ρ of concrete and icorr of the embedded steel for some exposure conditions, and some considerations are discussed to avoid possible measurement interpretation errors if this correlation is used in real structures.
期刊介绍:
CORROSION is the premier research journal featuring peer-reviewed technical articles from the world’s top researchers and provides a permanent record of progress in the science and technology of corrosion prevention and control. The scope of the journal includes the latest developments in areas of corrosion metallurgy, mechanisms, predictors, cracking (sulfide stress, stress corrosion, hydrogen-induced), passivation, and CO2 corrosion.
70+ years and over 7,100 peer-reviewed articles with advances in corrosion science and engineering have been published in CORROSION. The journal publishes seven article types – original articles, invited critical reviews, technical notes, corrosion communications fast-tracked for rapid publication, special research topic issues, research letters of yearly annual conference student poster sessions, and scientific investigations of field corrosion processes. CORROSION, the Journal of Science and Engineering, serves as an important communication platform for academics, researchers, technical libraries, and universities.
Articles considered for CORROSION should have significant permanent value and should accomplish at least one of the following objectives:
• Contribute awareness of corrosion phenomena,
• Advance understanding of fundamental process, and/or
• Further the knowledge of techniques and practices used to reduce corrosion.