Service Life Prediction Model of Concrete Square Piles in Marine Environment
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    Abstract:

    A diffusion equation of chloride ion in concrete was put forward based on Fick's second law. In the equation, the influences of timedependence of chloride diffusivity, the effect of load on diffusion coefficient and chloride ion binding capacity of concrete were taken into consideration. A prediction model of service life of reinforced concrete (RC) square piles was established. The effects of cover thickness, cracking width, surface chloride ion concentration and the chloride threshold level on service life of RC square piles were analyzed. The analysis results indicate that the diffusion equation of chloride ion of this paper agrees well with the experimental data. It suggests that the cover thickness should be greater than 45 mm and the cracking width should not be greater than 0.1 mm if the design service life of RC square piles is 50 years.

    Reference
    [1]Mangat P S,Limbachiya M C. Effect of initial curing on chloride diffusion in concrete repair materials[J]. Cement and Concrete Research,1999,29(9): 1475―1485.
    [2]Khatri R P, Sirivivatnanon V. Characteristic service life for concrete exposed to marine environments [J]. Cement and Concrete Research , 2004, 34: 745―752.
    [3]余红发, 孙伟, 麻海燕, 等. 混凝土在多重因素作用下的氯离子扩散方程[J]. 建筑材料学报, 2002, 5(3): 240―247.YU Hongfa, SUN Wei, MA Haiyan, et al. Diffusion equations of chloride ion in concrete under the combined action of durability factors[J]. Journal of Building Materials, 2002, 5(3): 240―247.(in Chinese)
    [4]Thomas M D A, Bamforth P B. Modelling chloride diffusion in concrete-effect of fly ash and slag [J]. Cement and Concrete Research, 1999, 29(4): 487―495.
    [5]金伟良, 延永东, 王海龙. 氯离子在受荷混凝土内的传输研究进展[J]. 硅酸盐学报. 2010, 38(11): 2217―2224.JIN Weiliang, YAN Yongdong, WANG Hailong. Research progress On the chloride transportation in stressed concrete[J]. Journal of the Chinese Ceramic Society. 2010, 38(11): 2217―2224.(in Chinese)
    [6]LU C H, WANG H L, JIN W L. Modeling the influence of stress level on chloride transport in pre-stressed concrete [C]// Proceedings of the international conference on durability of concrete structures, Hangzhou, 2008: 239―245.
    [7]袁承斌, 张德峰, 刘荣桂, 等. 不同应力状态下混凝土抗氯离子侵蚀的研究[J]. 河海大学学报, 2003, 31(1): 50―54.YUAN Chengbin, ZHANG Defeng, LIU Ronggui, et al. Diffusion of chloride in concrete in different stress states[J]. Journal of Hohai University, 2003, 31(1): 50―54.(in Chinese)
    [8]Konin A, Francois R, ARLIGUIE G. Penetration of chlorides in relation to the micro cracking state into reinforced ordinary and high strength concrete [J]. Material Structure, 1998, 31: 310―316.
    [9]Dhir R K, Jones M R, Ahmed H. Concrete durability: estimation of concentration during design life[J]. Magazine Concrete Research, 1991, 43(154):37―44.
    [10]李镜培, 岳著文, 邵伟, 等. 海工环境 PHC 管桩设计寿命计算[J]. 硅酸盐学报, 2014, 42(4): 476―485.LI Jingpei, YUE Zhuwen, SHAO Wei, et al. Calculation of design lifetime of PHC pipe pile in marine environment[J]. Journal of the Chinese Ceramic Society.(in Chinese)
    [11]邵伟, 李镜培. 氯离子侵蚀钢筋混凝土管桩的使用寿命预测[J]. 同济大学学报, 2014, 42(12): 1820―1825.SHAO Wei, LI Jingpei. Service life prediction of reinforced concrete pipe pile due to chloride ion corrosion[J]. Journal of Tongji University, 2014, 42(12): 1820―1825.(in Chinese)
    [12]Collepardi M,Marcialis A, Turrizzani R. The kinetics of penetration of chloride ions into the concrete[J], Cement , 1970(4):157―164.
    [13]Midgley H G, Illston J M. The penetration of chlorides into hardened cement pastes[J], cement and concrete research, 1984, 14(4):546―558.
    [14]CHEN D, Mahadevan S, Chloride-included reinforcement corrosion and concrete cracking simulation[J]. Cement and Concrete Composite, 2008, 30(3): 227―238.
    [15]Violetta B. Life-365 service life prediction model[J]. Concrete International, 2002, 24(12): 53―57.
    [16]CECS 220-2007. 混凝土结构耐久性评定标准[S]. 北京: 中国建筑工业出版社, 2007.CECS 220-2007. Standard for durability assessment of concrete structures[S]. Beijing: China Architecture Building Press, 2007.(in Chinese)
    [17]GB 5001-2010. 混凝土结构设计规范[S]. 北京: 中国建筑工业出版社, 2010.GB 5001-2010. Code for design of concrete structures[S]. Beijing: China Architecture Building Press, 2010.(in Chinese)
    [18]Francois R, Arligure G, Castel A. Influence of service cracking on service life of reinforced concrete [C]//Concrete under severe conditions 2: environment and loading, 1998, 143―152.
    [19]Mohammed T U, Hamada H. Relationship between free chloride and total chloride contents in concrete[J]. Cement and Concrete Research, 2003, 33(9):1487―1490.
    [20]汪冬冬, 王成启, 石蓓玲, 等. 大管桩现场取样与耐久性研究[J]. 中国港湾建设, 2008(1): 39―43.WANG Dongdong, WANG Chengqi, SHI Beiling, et al. Field sampling, analysis and search on durability of large diameter cylindrical pile[J]. China Harbour Engineering, 2008(1): 39―43.(in Chinese)
    [21]Enuelund S, Edvardsen C, Mohr L. General guidelines for durability design and redesign [J]. Report R15 of EU-Brite EuRam III project BE95-1347 DuraCreate. Probabilistic performance based durability design of concrete structures, 2000.
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LI Jingpei, LI He. Service Life Prediction Model of Concrete Square Piles in Marine Environment[J].同济大学学报(自然科学版),2016,44(9):1371~1376

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History
  • Received:May 18,2015
  • Revised:June 27,2016
  • Adopted:June 23,2016
  • Online: October 10,2016
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