EFFECT OF GREEN INHIBITOR ON THE CORROSION BEHAVIOUR OF REINFORCED CARBON STEEL IN CONCRETE
The effect of inhibitors on the corrosion behaviour of carbon steel reinforced in concrete exposed to 3.5% NaCl solution has been studied by electrochemical and weight loss tests. The corrosion potential and concrete resistivity were determined during the immersion time of the concrete specimens. Th...
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| Veröffentlicht in: | ARPN journal of engineering and applied sciences 2013-05, Vol.8 (5), p.326-332 |
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| creator | Eyu, D G Esah, H Chukwuekezie, C Idris, J Mohammad, I |
| description | The effect of inhibitors on the corrosion behaviour of carbon steel reinforced in concrete exposed to 3.5% NaCl solution has been studied by electrochemical and weight loss tests. The corrosion potential and concrete resistivity were determined during the immersion time of the concrete specimens. The results show that calcium nitrite and vemonia amygdalina extract reduced corrosion rate compared to sodium nitrite. However, vemonia amygdalina inhibition was more effective in the immersed concrete in simulated seawater. The weight loss results demonstrated that 2% sodium nitrite was more effective with efficiency of 96% in comparison with 2% calcium nitrite and 6% vemonia amygdalina with efficiency of 92% and 75%, respectively. From the results, it is evident that the extract from vemonia amygdalina (bitter leaf) acts as an excellent corrosion inhibitor for rebar steel, efficiency increases with increase in dosage, and the inhibition mechanism was by physical adsorption which is responsible for shielding the specimen from corrosive environment. |
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The corrosion potential and concrete resistivity were determined during the immersion time of the concrete specimens. The results show that calcium nitrite and vemonia amygdalina extract reduced corrosion rate compared to sodium nitrite. However, vemonia amygdalina inhibition was more effective in the immersed concrete in simulated seawater. The weight loss results demonstrated that 2% sodium nitrite was more effective with efficiency of 96% in comparison with 2% calcium nitrite and 6% vemonia amygdalina with efficiency of 92% and 75%, respectively. 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The corrosion potential and concrete resistivity were determined during the immersion time of the concrete specimens. The results show that calcium nitrite and vemonia amygdalina extract reduced corrosion rate compared to sodium nitrite. However, vemonia amygdalina inhibition was more effective in the immersed concrete in simulated seawater. The weight loss results demonstrated that 2% sodium nitrite was more effective with efficiency of 96% in comparison with 2% calcium nitrite and 6% vemonia amygdalina with efficiency of 92% and 75%, respectively. From the results, it is evident that the extract from vemonia amygdalina (bitter leaf) acts as an excellent corrosion inhibitor for rebar steel, efficiency increases with increase in dosage, and the inhibition mechanism was by physical adsorption which is responsible for shielding the specimen from corrosive environment.</description><subject>Calcium</subject><subject>Carbon steels</subject><subject>Concretes</subject><subject>Corrosion inhibitors</subject><subject>Inhibition</subject><subject>Reinforcing steels</subject><subject>Sodium nitrite</subject><subject>Weight loss</subject><issn>1819-6608</issn><issn>1819-6608</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNpNTM1LwzAcDaLgmPsfcvRSSJp-JMc2_roGSgNZ5sXDSNMMlOqm2f5_I3rwXd57vI8btKKciqyqCL_9p-_RJsY3klCIouZshV6g60BarDu8NQAjVmOvWmW1wXrEtgcstTF6p5JroW-eld6bn7YBNXbaSHjCsjFtincWYEj7tBilAQsP6O7olhg2f7xG-w6s7LNBb5VshuxMCbtkwXk_BRF4PQdXzIF6QqaJeu9KWpOK5Ufu8tKXJfecFgUpOQtUEBcEm6vAcrZGj7-_56_T5zXEy-H9NfqwLO4jnK7xQGuRWoTkhH0DvlhJ2w</recordid><startdate>20130501</startdate><enddate>20130501</enddate><creator>Eyu, D G</creator><creator>Esah, H</creator><creator>Chukwuekezie, C</creator><creator>Idris, J</creator><creator>Mohammad, I</creator><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7TB</scope><scope>7U5</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope></search><sort><creationdate>20130501</creationdate><title>EFFECT OF GREEN INHIBITOR ON THE CORROSION BEHAVIOUR OF REINFORCED CARBON STEEL IN CONCRETE</title><author>Eyu, D G ; Esah, H ; Chukwuekezie, C ; Idris, J ; Mohammad, I</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p103t-eaccbe9e87dea4de1c00bb1cca5170632f8a25c558c81440583e190ae93d6e323</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Calcium</topic><topic>Carbon steels</topic><topic>Concretes</topic><topic>Corrosion inhibitors</topic><topic>Inhibition</topic><topic>Reinforcing steels</topic><topic>Sodium nitrite</topic><topic>Weight loss</topic><toplevel>online_resources</toplevel><creatorcontrib>Eyu, D G</creatorcontrib><creatorcontrib>Esah, H</creatorcontrib><creatorcontrib>Chukwuekezie, C</creatorcontrib><creatorcontrib>Idris, J</creatorcontrib><creatorcontrib>Mohammad, I</creatorcontrib><collection>Computer and Information Systems Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><jtitle>ARPN journal of engineering and applied sciences</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Eyu, D G</au><au>Esah, H</au><au>Chukwuekezie, C</au><au>Idris, J</au><au>Mohammad, I</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>EFFECT OF GREEN INHIBITOR ON THE CORROSION BEHAVIOUR OF REINFORCED CARBON STEEL IN CONCRETE</atitle><jtitle>ARPN journal of engineering and applied sciences</jtitle><date>2013-05-01</date><risdate>2013</risdate><volume>8</volume><issue>5</issue><spage>326</spage><epage>332</epage><pages>326-332</pages><issn>1819-6608</issn><eissn>1819-6608</eissn><abstract>The effect of inhibitors on the corrosion behaviour of carbon steel reinforced in concrete exposed to 3.5% NaCl solution has been studied by electrochemical and weight loss tests. The corrosion potential and concrete resistivity were determined during the immersion time of the concrete specimens. The results show that calcium nitrite and vemonia amygdalina extract reduced corrosion rate compared to sodium nitrite. However, vemonia amygdalina inhibition was more effective in the immersed concrete in simulated seawater. The weight loss results demonstrated that 2% sodium nitrite was more effective with efficiency of 96% in comparison with 2% calcium nitrite and 6% vemonia amygdalina with efficiency of 92% and 75%, respectively. From the results, it is evident that the extract from vemonia amygdalina (bitter leaf) acts as an excellent corrosion inhibitor for rebar steel, efficiency increases with increase in dosage, and the inhibition mechanism was by physical adsorption which is responsible for shielding the specimen from corrosive environment.</abstract><tpages>7</tpages></addata></record> |
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| ispartof | ARPN journal of engineering and applied sciences, 2013-05, Vol.8 (5), p.326-332 |
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| language | eng |
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| source | EZB-FREE-00999 freely available EZB journals |
| subjects | Calcium Carbon steels Concretes Corrosion inhibitors Inhibition Reinforcing steels Sodium nitrite Weight loss |
| title | EFFECT OF GREEN INHIBITOR ON THE CORROSION BEHAVIOUR OF REINFORCED CARBON STEEL IN CONCRETE |
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