Laboratory Corrosion Test of Steel in Concrete

摘要

A method for laboratory corrosion testing of steel in concrete was correlated to previous laboratory and field investigations. Included in the report are derived mathematical relationships of the influence of moist or steam curing, admixtures, mixing water, entrained air, and cement content of concrete to the time of an active half-cell potential of the embedded steel. Some statistical data are presented which indicate the numerical value which demarks the upper limit of a passive half-cell potential of the steel. Other data show the measured corrosion loss of the steel and the quantity of chloride found in concrete fragments. Also presented is what is believed a new method for applying a regression analysis to the distribution of test values. (BPR Abstract)