By J. Mietz, R. Polder, B. Elsener
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Additional resources for B0746 Corrosion of reinforcement in concrete (EFC 31) (matsci)
In contrast P to the Ecorr time dependence, a significant effect of the initial superficial state of steel was evident in this case. 4%/cement) was high for all humidities during the whole period of exposure. Polarisation resistance values of scaled specimens were a little lower under the same conditions. For pre-rusted specimens, R, values were always low, regardless of the chloride content (Table 1). Values of E , were related to vcorrvalues in a similar way as were free corrosion potentials.
M. Magne and M. Sandvik, Concrete blocks for long time exposure. SINTEF Report STF65 A84030, ISBN 82-595-3605-6, Trondheim, 1984 (in Norwegian). 2. T. A. Hammer and J. 5years exposure time. SINTEF report STF65 A86003 1986-07-10), ISBN 82-5954073-8, Trondheim, 1986 (in Norwegian). 3. T. A. Hammer, J. Havdahl and I. Meland, Concrete blocks for long time exposure -5 years exposure time. SINTEF report STF65 A90010, ISBN 82-595-58084, Trondheim, 1991(in Norwegian). 4 . 0 . Gautefall, Experiences from 9 years exposure of concrete in the tidal zone.
All blocks had reinforcing nets with 30 mm and 50 mm cover. In addition to visual inspection the following measurements were made: surface potentials, concrete resistivity, chloride profiles and accelerated chloride penetration test. From one of the blocks of each concrete quality the chloride profiles were determined both from the side facing land (south) and from the side facing the sea (north). The amount of penetrated chlorides is relatively identical for all types of concrete. 8 gm-2 surface.