최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기콘크리트학회논문집 = Journal of the Korea Concrete Institute, v.21 no.3, 2009년, pp.245 - 253
송하원 (연세대학교 사회환경시스템공학부) , 이창홍 (연세대학교 사회환경시스템공학부) , 이근주 (연세대학교 사회환경시스템공학부) , 안기용 (연세대학교 사회환경시스템공학부)
The importance of chloride ions in the corrosion of steel in concrete has led to the concept for chloride threshold level (CTL). The CTL can be defined as the content of chlorides at the steel depth that is necessary to sustain local passive film breakdown and hence initiate the corrosion process. D...
* AI 자동 식별 결과로 적합하지 않은 문장이 있을 수 있으니, 이용에 유의하시기 바랍니다.
핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
염화물에 의한 철근의 부식은 무엇으로서 작용하게 되나? | 염화물에 의한 철근의 부식은 콘크리트구조물내의 철근과 콘크리트 계면에서의 주된 열화인자로서 작용하게된다. 1) 일단 염화물농도가 특정 임계염화물농도를 초과하게 되면 철근의 부식이 개시되게 되며, 이러한 임계염화물농도 (이하 CTL)와 관련하여 보통포틀랜드시멘트 (이하 OPC)의 경우 실험실 혹은 현장조건에서의 값은 많은 연구자들에 의해 조사 및 축적되어온 것이 사실이다. | |
CTL은 무엇인가? | 콘크리트 내 철근부식상에 있어 염화물이온의 중요성은 임계염화물농도 (CTL)로서 나타내어진다. CTL은 철근을 둘러싼 부동태피막의 파괴를 유지하게끔 하는데 필요한 염화물량으로 정의되며 염화물량이 CTL에 도달할 경우 철근의 부식은 시작된다. CTL의 중요성에도 불구하고 기존의 콘크리트 구조물의 내구수명 예측을 위한 염화물량은 1 $m^3$의 단위체적당 1. | |
철근부식이 일어나게 되는 특정 염화물농도를 뭐라고 부르는가? | 한편, 철근부식은 특정 염화물농도가 철근계면에 도달하였을 때 발생하게 된다. 이 농도를 임계염화물농도 혹은 염화물농도를 위한 허용한계라 부른다. 10-12) 일반적으로 이 CTL은 실내실험에서의 경우, 원형 공시체시편의 분석을 통해 시멘트 중량당 백분율로 표시되게 되는데 이는 산화칼슘 혹은 산화알루미늄 등의 시멘트구성성분과 염소이온이 반응하는 복합반응으로 작용되기 때문이다. |
Song, H. W., Lee C. H., and Ann, K. Y., “Factors Influencing Chloride Transport in Concrete Structures Exposed to Marine Environment,” Cem Concr Comp, Vol. 30, I. 2, 2008, pp. 113-121
Song, H. W. and Ann, K. Y., “Chloride Threshold Level for Corrosion of Steel in Concrete,” Corros Sci., Vol. 49, 2007, pp. 4113-4133
Glass, G. K. and Buenfeld, N. R., “The Presentation of the Chloride Threshold Level for Corrosion of Steel in Concrete,” Corros Sci., Vol. 39 1997, pp. 1001-1013
Saraswathy. V. and Song, H. W, “Performance of Galvanized and Stainless Steel Rebars in Concrete under Macrocell Corrosion Conditions,” Mat Corros, Vol. 56, No. 10, 2005, pp. 685-691
Collepardi, M., Marcialis, A., and Turriziani, R., “The Kinetics of Penetration of Chloride Ions into the Concrete,” II Cement, 2nd Edition, Clarendon Press, Oxford, 1975, 21 pp.
Song, H. W., Jung, M. S., and Ann, K. Y., “Resistance of Cementitous Binders against a Fall in the pH at Corrosion Initiation,” International Corrosion Engineering Conference, May 20-24, 2007, pp. 91-97 (In CD)
Song, H. W., Lee, C. H., Jung, M. S., and Ann, K. Y., “Development of Chloride Binding Capacity in Cement Pastes and the Influence of the pH of Hydration Products,” Can Civ. Engr. J, Vol. 35, No. 12, pp. 1427-1434
Song, H. W., V. Saraswathy., S. Muralidharan., and K.Thangavel., “Tolerance Limit of Chloride for Steel in Blended Cement Mortar Using the Cyclic Polarisation Technique,” J. Appl Electrochem, Vol. 38, 2008, pp. 445~450
Song, H. W., Lee, C. H., and Ann, K. Y., “Prediction of Chloride Profile Considering Binding of Chlorides in Cement Matrix,” International Corrosion Engineering Conference, May 20-24. 2007, pp. 84-90 (In CD)
Suryavanshi, A. K., Scantlebury, J. D., and lyon, S. B., “Corrosion of Reinforcement Steel Embedded in High Water-Cement Ratio Concrete Contaminated with Chloride,” Cem. Concr. Comp., Vol. 20, 1998, pp. 263-281
Swamy, R. N., “Resistance to Chlorides of Galvanized Rebars,” In: Corrosion of Reinforcement in Concrete, C. L. Page, K. W. J. Treadaway and P. B. Bamforth, eds., Elsevier Applied Science, London UK, 1990, pp. 586-600
Sykes, J. M. and Balkwill, P. H. “Simulating the Pitting Corrosion of Steel Reinforcement in Concrete,” In: The Use of Synthetic Environments for Corrosion Testing, ASTM STP 970, P. E. Francis and T. S. Lee, eds., 1988, pp. 255-263
Ann, K. Y., Enhancing the Chloride Threshold Level for Steel Corrosion in Concrete, Imperial College, UK, Doctoral Thesis, 2005, pp. 1-254
Buenfeld, N. R. and Broomfield, J. P., “Influence of Electrochemical Chloride Extraction on the Bond between Steel and Concrete,” Mag. of Conc. Res., Vol. 52, 2000, pp. 79~91
Brown, P., “Method of Resisting Corrosion in Metal Reinforcing Elements Contained in Concrete and Related Compounds and Structures,” Unites States Patent No. 6755925, 2004, pp. 1-8
Hausmann, D. A., “Steel Corrosion in Concrete; How Does It Occur?,” Materials and Protection, Vol. 6, 1967, pp. 19-23
Gouda, V. K., “Corrosion and Corrosion Inhibition of Reinforcing Steel; 1-Immersion in Alkaline Solution,” British Corros J, Vol. 5, 1970, pp. 198-203
Goni, S. and Andrade, C., “Synthetic Concrete Pore Solution Chemistry and Rebar Corrosion in the Presence of Chloride,” Cem. Conc. Res., Vol. 20, 1990, pp. 525-539
Yonesawa, T., Ashworth, V., and Procter, R. P. M., “Pore Solution Composition and Chloride Effects on the Corrosin of Steel in Concrete,” Corros, Vol. 44, 1988, pp. 489-499
Izquierdo, d., Alonso, C., Andrade, C. and Castellote, M, “Potentiostatic Determination of Chloride Threshold Values for Rebar Depassivation: Experimental and Statistical Study,” Electrochemica Acta, Vol. 49, 2004, pp. 2731-2739
Morris, W., Vico, A., and Vazquez, M., “Chloride Induced Corrosion of Reinforcing Steel Evaluated by Concrete Resistivity Measurements,” Electrochemica Acta, Vol. 49, 2004, pp. 4447-4453
Oh, B. H., Jang, S. Y., and Shin, Y. S., “Experimental Investigation of the Threshold Chloride Concentratin for Corrosin Initiation in Reinforced Concrete Structures,” Mag. Concr. Res., Vol. 55, 2003, pp. 117-124
Alonso, C., Castellote, M., and Andrade, C., “Chloride Threshold Dependence of Pitting Potential of Reinforcements,” Electrochemica Acta, Vol. 47, 2002, pp. 3469-3481
Alonso, C., Andrade, C., Catellote, M., and Castro, P., “Chloride Threshold Values to Depassivate Reinforcing Bars in a Standardized OPC Mortar,” Cem. Concr. Res., Vol. 30, 2000, pp. 1047-1055
Schiessel, P. and Breit, W., “Local Repair Measures at Concrete Structures Damaged by Reinforcement Corrosion,” In: Corrosion of Reinforcement in Concrete Construction, C. L. Page, P. B. Bamforth and J. W. Figg, eds., Cambridge UK, 1996, pp. 525-534
Kayyali, O. A. and Haque, M. N., “The Cl-/OH- Ratio in Chloride-Contaminated Concrete - a Most Important Criterion,” Mag. of Concr. Res., Vol. 47, 1995, pp. 235-242
Hussain, S. E., Rasheeduzafar, S., Al-Musallam, A., and Al-Gahtani, A. S., “Factors Affecting Threshold Chloride for Reinforcement Corrosion in Concrete,” Cem. Concr. Res., Vol. 25, 1995, pp. 1543-1555
Rasheeduzafar, S., Hussain, S. E., and Al-Saadoum, S. S., “Effect of Cement Composition on Chloride Binding and Corrosion of Reinforcing Steel in Concrete,” Cem. Concr. Res., Vol. 21, 1991, pp. 777-794
Schiessel, P. and Raupach, M., “Influence of Concrete Composition and Microclimate on the Critical Chloride Content in Concrete,” In: Corrosion of Reinforcement in Concrete, C.L. Page, K.W.J. Treadaway and P.B. Bamforth, eds., Elsevier Applied Science, London UK, 1990, pp. 49-58
Hope, B. B. and Ip, A. K. C., “Chloride Corrosion Threshold in Concrete,” ACI Material Jouranl, Vol. 86, 1987, pp. 602-608
Andrade, C. and Page, C. L. “Pore Solution Chemistry and Corrosion in Hydrated Cements Systems Containing Chloride Salts: A Study of Cation Specific Effect,” Cem. Concr. Res., Vol. 21, 1986, pp. 49-53
Locke, C. E. and Siman, A., “Electrochemistry of Reinforcing Steel in Salt-Contaminated Concrete,” In: Corrosion of Reinforcing Steel in Concrete, D.E. Tonini and J. M. Gaidis, eds., ASTM STP 713, 1978, pp. 3-16
Gouda, V. K. and Halaka, W. Y., “Corrosion and Corrosion Inhibition of Reinforced Steel,” British Corros J, Vol. 5, 1970, pp. 1119-1131
Trejo, D. and Pillai, R. G., “Accelerated Chloride Threshold Testing: Part I-ASTM A615 and A706 Reinforcement,” ACI Mat. J., Vol. 100, 2003, pp. 519-527
Trejo, D. and Pillai, R. G., “Accelerated Chloride Threshold Testing: Part I-Corrosion-Resistant Reinforcement,” ACI Mat. J., Vol. 101, 2004, pp. 57-64
Alonso, C., Castellote, M., and Andrade, C., “Chloride Threshold Dependence of Pitting Potential of Reinforcements,” Electrochemical Acta, Vol. 47, 2002, pp. 3469-3481
Bamforth, P. B., “The Derivation of Input Data for Modelling Chloride Ingress from Eight-Years UK Coastal Exposure Trials,” Mag. of Conc. Res., Vol. 51, 1999, pp. 87-96
Thomas, M., “Chloride thresholds in marine concrete,” Cem Concr Res, Vol. 26, 1996, pp. 513-519
Pettersson, K., “Chloride Threshold Value and Corrosion Rate in Reinforcement Concrete,” In: Concrete 2000, R.K. Dhir and M.R. Jones, eds., E&FN Spon, London UK, Vol. 1, 1993, pp. 461-471
Tuutti, K., “Effect of Cement Type and Different Additions on Service Life,” In: Concrete 2000, R.K. Dhir and M.R. Jones, eds., E&FN Spon, London UK, Vol. 2, 1993, pp. 1285-1296
Lambert, P., Page, C. L. and Vassie, P. R. W., “Investigations of Reinforcement Corrosion. 2. Electrochemical Monitoring of Steel in Chloride-contminated Concrete,” Mat. Struc., Vol. 24, 1991, pp. 351-358
Thomas, M. D. A., Matthews, J. D., and Haynes, C. A., “Chloride Diffusion and Corrosion in Marine Exposed Concrete Containing Pulverized Fuel Ash,” In: Corrosion of Reinforcement in Concrete, C.L. Page, K.W.J. Treadaway and P.B. Bamforth, eds., Elsevier Applied Science, London UK, 1990, pp. 198-212
Hansson, C. M. and Sorensen, B., “The Threshold Concentration of Chloride in Concrete For Initiation of Reinforcement Corrosion,” In: Corrosion Rates of Steel in Concrete, N.S. Berke, V. Chaker and D. Whiting, eds., ASTM STP 1075, 1988, pp. 3-16
Vassie, P., “Reinforcement Corrosion and the Durability of Conrete Bridges,” Proceeding of Institution of Civil Engineers, Vol, 76, 1984, pp. 713-723
Song, H. W., Ann, K. Y., Lee, C. H., and Lee, K. C., “Corrosion of Steel in Mortars Containing OPC, PFA, GGBS and SF with Chlorides in Cast,” The 4th Civil Engineering Conference in the Asian Region, Taipei, Taiwan, June 25-28. 2007, pp. 46-53 (In CD)
Broomfield, J. P., Langfor, P. E., and Mcanoy, R., “Cathodic Protection For Reinforced Concrete: its Appliction to Buildings And Marine Structures,” Corrosion of Metals in Concrete, P. Virmani, eds., NACE Houston USA, 1987, pp. 222-235
Castel, A., Vidal, T., Francois, R., and Arliguie, G. “Influence of Steel Concrete Interface Quality on Reinforcement Corrosion Induced by Chlorides,” Mag. Concr. Res., Vol. 55, 2003, pp. 151-159
Andrade, C., Castelo, V. Alonso, C., and Gonzalez, J. A., “The Determination of The Corrosion Rate of Steel Embedded In Concrete By Polarization Resistance and AC Impedance Methods,” In: Corrosion Effect of Stray Currents and the Techniques for Evaluating Corrosion of Rebar Concrete, V. Chaker eds., ASTM STP 906, 1986, pp. 46-57
Arya, C. and Newman, J. B., “An Assessment of Four Methods of Determining the Free Chloride Content of Concrete,” Mat. Struc., Vol. 23, 1990, pp. 319-330
*원문 PDF 파일 및 링크정보가 존재하지 않을 경우 KISTI DDS 시스템에서 제공하는 원문복사서비스를 사용할 수 있습니다.
출판사/학술단체 등이 한시적으로 특별한 프로모션 또는 일정기간 경과 후 접근을 허용하여, 출판사/학술단체 등의 사이트에서 이용 가능한 논문
※ AI-Helper는 부적절한 답변을 할 수 있습니다.