A Study on the Corrosion Resistance of Cr-bearing Rebar in Mortar in Corrosive Environments Involving Chloride Attack and Carbonation

Autor:	Sung-Ho Tae, Takumi Ujiro
Rok vydání:	2007
Předmět:	Materials science Mechanical Engineering Carbonation Metallurgy Metals and Alloys Rebar Reinforced concrete Chloride Corrosion law.invention Mechanics of Materials law Materials Chemistry medicine Composite material Mortar Polarization (electrochemistry) Ion content medicine.drug
Zdroj:	ISIJ International. 47:715-722
ISSN:	1347-5460 0915-1559
Popis:	Nine types of reinforcing steels having different Cr contents were placed in mortar simulating environments involving chloride attack, carbonation, and combined deterioration and subjected to corrosion-accelerating test for fundamental research on the corrosion resistance of Cr-bearing rebars in corrosive environments where reinforced concrete structures are to be constructed. The polarization resistance and corrosion potential of Cr-bearing rebars were then measured at temperatures of 60, 40, and 20°C to investigate their electrochemical properties in corrosive environments. Their corrosion area and average corrosion rate at the end of 40 cycles of corrosion-accelerating testing were also calculated to investigate their corrosion resistance. As a result, the corrosion resistance of Cr-bearing rebars was found to increase as their Cr content increases in all corrosive environments, and the excellent corrosion resistance of Cr-bearing rebars with Cr contents of 5% or more and 7% or more was confirmed in uncarbonated and carbonated environments, respectively, with a chloride ion content of 1.2 kg/m 3 .
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b74548393fdfccbb70eca7d84022e7e7 https://doi.org/10.2355/isijinternational.47.715 Zobrazit plný text záznamu