Abstract
This paper shows that condensation of the water-soluble Cl- in concrete is surprisingly significant in concrete structures submerged in sea water. That is, the Cl- concentration of the pore solution in the concrete structures can be very much higher than that of the surrounding sea water. In addition, the formation of Friedel's salt is confirmed to be closely related to the binding of intruded Cl- in materials with cement matrix. The maximum amount of intruded Cl- bound in the cement matrix materials is also examined. This research therefore provides better understanding of the intrusion mechanism of intruded Cl- and the induced corrosion of steel in concrete.
