Effect of Silica Fume, Metakaolin, Zeolite and Polypropylene Fiber on Chloride Diffusion in Concrete

Rapid concrete deterioration in Persian Gulf region has become one of the major concerns since it shortens the structure life span and increases the maintenance costs. The main cause of such concrete failure is claimed to be chloride permeation and subsequent corrosion. Pozzalns are widely being used in order to construct more durable concrete as a functional solution to this problem. The paper reports the performance of concrete incorporating silica fume (replacement level of 5%, 7.5% and 10%), metakaolin (replacement level of 5%, 10% and 15%), zeolite (replacement level of 10%, 20% and 30%) and Polypropylene Fiber in the binder to resist the chloride penetration in aggressive environments. The results showed that specimens containing pozzolans function better than control concretes.