Influence of the degree of pore saturation on the resistivity of concrete and the corrosion rate of steel reinforcement

摘要: Abstract Quantitative relations between the corrosion rate of reinforcements (i corr ) and degree pore saturation (PS) resistivity ( ϱ mortars without Cl − with 2% were obtained. The mortar specimens cured in a water fog chamber before final exposure at 50°C 50% relative humidity (RH). electrolyte supply was found to determined which varies over wide range (5 × 10 3 −5 7 ωcm) this turn influences i reinforcements. There is critical practical PS value (PS cp that results 5 ωcm, below values are too small pose any durability problems. Below value, prevents active state as effectively passivating layers steel .