ABSTRACT

Unfortunately, not just for the concrete technology, but for economics of world countries, the situation with corrosion and deterioration of concrete structures, and premature failure of expensive remedial actions has not led to accepted theories, questions answering and reliable practical actions. Following are just a few of such questions:

− How chlorides depassivate the reinforcing steel? − What does “chloride threshold?” mean, if anything? − When corrosion occurs, what amount of “corrosion

products” are necessary to crack the concrete? − Assuming continuous “good” bond between rein-

forcement and concrete, where the “critical amount” of corrosion products accumulates?