Chloride Diffusivity in Cracked Concrete

被引：1
作者：
Zhang, Shiping [1 ]
Zong, Lan [1 ]
Liu, Jiaping [2 ]
机构：
[1] Nanjing Inst Technol, Dept Architecture Civil Engn, Nanjing 211167, Jiangsu, Peoples R China
[2] Jiangsu Res Inst Bldg Sci Co Ltd, Nanjing 210008, Peoples R China
来源：
ADVANCED BUILDING MATERIALS, PTS 1-4 | 2011年 / 250-253卷 / 1-4期
关键词：
Crack width; Chloride ion concentration; Chloride diffusion; PERMEABILITY;
D O I：
10.4028/www.scientific.net/AMR.250-253.113
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A detailed observation on the penetration profile of chloride ions through a crack in concrete structures was carried out. Cracks were induced using a splitting tensile test, and average crack width was measured using an image analysis technique. Chemical analysis tests were conducted on cracked specimens, which were exposed to NaCl solution at a temperature of 20 degrees C, after being cured for 28d. The results showed that the concrete specimens having cracks showed rapid penetration of chloride ion. The diffusion coefficient calculated according to Fick's law also indicated that the chloride permeability increased with the increasing crack width.
引用
收藏
页码：113 / +
页数：2
相关论文
共 14 条
  • [1] Effect of cracking on water and chloride permeability of concrete
    Aldea, CM
    Shah, SP
    Karr, A
    [J]. JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 1999, 11 (03) : 181 - 187
  • [2] BERMAN HA, 1972, J MATER, V7, P330
  • [3] TRANSIENT MOISTURE TRANSPORT IN A CRACKED POROUS-MEDIUM
    DAIAN, JF
    SALIBA, J
    [J]. TRANSPORT IN POROUS MEDIA, 1993, 13 (03) : 239 - 260
  • [4] Influence of traversing crack on chloride diffusion into concrete
    Djerbi, A.
    Bonnet, S.
    Khelidj, A.
    Baroghel-bouny, V.
    [J]. CEMENT AND CONCRETE RESEARCH, 2008, 38 (06) : 877 - 883
  • [5] Influence of cracking on the diffusion properties of cement-based materials -: Part I:: Influence of continuous cracks on the steady-state regime
    Gérard, B
    Marchand, J
    [J]. CEMENT AND CONCRETE RESEARCH, 2000, 30 (01) : 37 - 43
  • [6] Chloride diffusivity of concrete cracked in flexure
    Gowripalan, N
    Sirivivatnanon, V
    Lim, CC
    [J]. CEMENT AND CONCRETE RESEARCH, 2000, 30 (05) : 725 - 730
  • [7] Peter A.C., 2009, CONSTR BUILD MATER, V23, P1837
  • [8] Qi C. Q., 2003, PURDUE U
  • [9] Rodriguez O. G., 2001, U TORONTO
  • [10] Rodriguez OG, 2003, ACI MATER J, V100, P120
12