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Chloride penetration and the ratio of Cℓ−/OH− in the pores of cement paste

✍ Scribed by O.A. Kayyali; M.N. Haque

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
326 KB
Volume
18
Category
Article
ISSN
0008-8846

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✦ Synopsis

Communicated by F.H. Wittmann) (Received March I, 1988) Hardened Portland cement paste samples were immersed in sodium chloride solution.

Their pore solution was expressed and analysed for C£-and OH-ions concentrations. The development of free C~-and of C£-/OH-ratio is discussed in relation to the limits previously established for the onset of depassivation of steel reinforcement. It was found that within a relatively short period penetration of the chloride ions could cause the C~-/OHratio in the pores to exceed the depassivation limits.

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