Recent Development of Concrete Engineering and Corrosion Protection Technology for Steel Reinforcements

Abstract

Recent development of high-strength concrete enabled the construction of high-rise buildings by concrete, which was only possible by using steel, A new concrete, that does not need vibration consolidation which was necessary in traditional construction, has also been developed. Contrasting such development of concrete technologies, quality problems of concrete has been pointed out intermittently in these 20 years; cracking of concrete, corrosion of steel reinforcements and alkali-aggregate reaction.
In this paper outline of the above mentioned trends and problems of concrete engineering are presented along with the corrosion protection technology for steel reinforcement to prolong the life time of concrete structures.