干湿循环条件下葡萄糖对混凝土中钢筋的缓蚀作用
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摘要
利用干湿循环方法模拟浪溅区环境,通过半电池电位(E_(corr))和宏观电池电流密度(J_(corr))、电化学阻抗(EIS)以及表面观察技术研究了葡萄糖对混凝土试块中钢筋的缓蚀性能。结果表明:混凝土中添加葡萄糖可有效延迟钢筋开始腐蚀的时间。空白试块中,钢筋腐蚀产物是以氢氧化铁、羟基氧化铁为主的红锈,而添加阻锈剂后,钢筋腐蚀产物是以四氧化三铁为主的黑锈。
Wet-dry cycles method was used to simulate the service environment of steel rebar in marine region.The inhibition behavior of glucose on steel rebar was studied by half cell potential(E_(corr)),macro current density(J_(corr)) and electrochemical impedance spectrum(EIS) measurements as well as electron mirror microscope techniques.The results indicate that the glucose can delay the time when the steel rebar corrosion initiates.The corrosion product inside control mortar specimens is mainly composed of red rust with the composition of ferric hydroxides and oxyhydroxides while that in the presence of organic inhibitors is black rust which is mainly composed with magnetite.
引文
[1]Elsener B,Zurich E,in:Raupach M,et al.Corrosion of reinforcement in concrete:mechanisms,monitoring,inhibitors and rehabilitation techniques[M].1st ed.Cambridge England,Woodhead Publishing Limited,2007:170.
    [2]Soylev T A,Richardson M G.Corrosion inhibitors for steel in concrete;State-of-the-art report[J].Construction and Building Materials,2008,22(4):609-622.
    [3]Batis G,Pantazopoulou P,Routoulas A.Corrosion protection investigation of reinforcement by inorganic coating in the presence of alkanolamine-based inhibitor[J].Cement and Concrete Composites,2003,25(3):371-377.
    [4]Jamil H E,Shriri A,Boulif R,et al.Electrochemical behaviour of amino alcohol-based inhibitors used to control corrosion of reinforcing steel[J].Electrochimica Acta,2004,49(17-18):2753-2760.
    [5]Martinez S,Valek L,Oslakovic I S.Adsorption of organic anions on low-steel rebar in saturated Ca(OH)_2and the HSAB principle[J].Journal of the Electrochemical Society,2007,154(11):C671-C677.
    [6]Ormellese M,Lazzari L,Goidanich S,et al.A study of organic substances as inhibitors for chloride-induced corrosion in concrete[J].Corrosion Science,2009,51(12):2959-2968.
    [7]周欣,杨怀玉,王福会.3.5%NaCl饱和Ca(OH)_2溶液中醇胺缩聚物对碳钢腐蚀的抑制[J].物理化学学报,2011,27(3):647-654.
    [8]Zhou X,Yang H Y,Wang F H.Investigation on the inhibition behavior of a pentaerythritol glycoside for carbon steel in 3.5%NaCl saturated Ca(OH)_2 solution[J].Corrosion Science,2012,54(1):193-200.
    [9]冯丽娟,杨怀玉,王福会.碱性溶液中苯甲酸抗坏血酸酯对钢筋的缓蚀行为[J].化学学报,2011,69(20):2359-2367.
    [10]Feng L J,Yang H Y,Wang F H.Experimental and theoretical studies for corrosion inhibition of carbon steel by imidazoline derivative in 5%NaCl saturated Ca(OH)_2 solution[J].Electrochimica Acta,2011,58:427-436.
    [11]Mechmeche L B,Dhouibi L,Ben Ouezdou M,et al.Investigation of the early effectiveness of an amino-alcohol based corrosion inhibitor using simulated pore solutions and mortar specimens[J].Cement and Concrete Composites,2008,30(3):167-173.
    [12]Valcarce M B,Vazquez M Steel rebar passivity examined in alkaline solutions:the effect of chloride and nitrite ions[J].Electrochimica Acta,2008,53(15):5007-5015.
    [13]Kondratova I L,Montes P,Bremner T W.Natural marine exposure results for reinforced concrete slabs with corrosion inhibitors[J].Cement and Concrete Composites,2003,25(4-5):483-490.
    [14]董俊华,柯伟.Mn-Cu钢大气腐蚀锈层演化规律及其耐候性的研究[J].金属学报,2010,46(11):1365-1378.
    [15]Almusallani A A Effect of degree of corrosion on the properties of reinforcing steel bars[J].Construction and Building Materials,2001,15(8):361-368.
    [16]Jaffer S J,Hansson C M.Chloride-induced corrosion products of steel in cracked-concrete subjected to different loading conditions[J].Cement and Concrete Research,2009,39(2):116-125.

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