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《Journal of University of Science and Technology Beijing》 2011-12
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Corrosion resistance of fine-grained rebar in simulated concrete pore solutions by means of electrochemical methods

SHI Jin-jie1,2),SUN Wei1,2),GENG Guo-qing1,2),JIANG Jin-yang1,2) 1) School of Materials Science and Engineering,Southeast University,Nanjing 211189,China 2) Jiangsu Key Laboratory of Construction Materials,Southeast University,Nanjing 211189,China  
Uniform and pitting corrosion behaviors of fine-grained rebar and low-carbon rebar in simulated concrete pore(SCP) solutions were investigated by means of corrosion potential,linear polarization resistance(LPR) and cyclic polarization.The influence of two different rebar surface conditions,i.e.,sandblasted and as-received,on the corrosion behavior of the rebar was taken into consideration.The results indicate that fine-grained rebar and low-carbon rebar show almost the same uniform corrosion behavior,and the passivation effects are better for sandblasted rebar than as-received rebar.In the latter period of corrosion,sandblasted rebar shows a higher uniform corrosion resistance than as-received rebar.Cyclic polarization measurements reveal that sandblasted rebar performs better in delaying pitting corrosion due to the relatively homogeneous surface than as-received rebar.Since more impurity-containing grain boundaries in fine-grained rebar facilitate the occurrence of pitting corrosion,the probability of pitting corrosion for as-received fine-grained rebar is slightly higher than that of as-received low-carbon rebar.
【Fund】: 国家重点基础研究发展计划资助项目(2009CB623203);; 国家高技术研究发展计划“高速铁路用钢筋混凝土研究”资助项目(2008AA030704);; 东南大学优秀博士学位论文基金资助项目(YBJJ1017)
【CateGory Index】: TG174.3
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【Citations】
Chinese Journal Full-text Database 1 Hits
1 JIANG Jian-hua,YUAN Ying-shu,LI Fu-min,WANG Bo,JI Yong-sheng(School of Architecture & Civil Engineering,China University of Mining and Technology,Xuzhou 221008,China);Comparative Study on Corrosion Behavior of Steel Bars of Different Grades in Concrete[J];Journal of Building Materials;2009-05
【Co-citations】
Chinese Journal Full-text Database 3 Hits
1 SHI Jinjie,SUN Wei (College of Materials Science and Engineering,Jiangsu Key Laboratory of Construction Materials,Southeast University, Nanjing 211189,China);RECENT RESEARCH ON STEEL CORROSION IN CONCRETE[J];Journal of the Chinese Ceramic Society;2010-09
2 JIANG Jian-hua,YUAN Ying-shu,PENG Tao(School of Mechanics & Civil Engineering,China University of Mining & Technology, Xuzhou 221116,Jiangsu,P.R.China);Time-variation full process mode of steel bar corrosion in concrete[J];Journal of Chongqing University;2011-10
3 SHI Jinjie,SUN Wei,GENG Guoqing College of Materials Science and Engineering,Jiangsu Key Laboratory of Construction Materials,Southeast University, Nanjing 211189;CORROSION RESISTANCES OF PASSIVE FILMS ON LOW-CARBON REBAR AND FINE-GRAINED REBAR IN ALKALINE MEDIA[J];Acta Metallurgica Sinica;2011-04
【Secondary Citations】
Chinese Journal Full-text Database 3 Hits
1 Yuan Yingshu Ji Yongsheng Mu Yanjun(China University of Mining and Technology, Xuzhou221008, China);Propagation and model of distribution for corrosion of steel bars in concrete[J];China Civil Engineering Journal;2007-07
2 GENG Ou,YUAN Ying-shu,LI Fu-min,WU Qing,ZHANG Jing-dong(School of Architecture & Civil Engineering,China University of Mining & Technology,Xuzhou,Jiangsu 221008,China);Experimental Study on Corrosion Rates of Deformed and Plain Bars in Concrete[J];Journal of China University of Mining & Technology;2006-04
3 JI Yong-sheng,YUAN Ying-shu (School of Architecture & Civil Engineering,China University of Mining & Technology,Xuzhou,Jiangsu 221008,China);Change Characteristic and Mechanism of Rebar Corrosion Rate with Time in Concrete Under Constant Climate[J];Journal of China University of Mining & Technology;2007-02
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