Influence of zeolite on compressive strength, permeability and resistance to chlorine ion attack in concrete

Corrosion is one of the destructive factors that causes a lot of damage to the reinforcement inside the concrete and causes irreparable damage to the economy. Chlorine ion penetration in concrete is one of the most important factors affecting concrete corrosion. Therefore, it is necessary to refine corrosion by identifying the concrete properties using proper methods. In this study, the effect of adding zeolite (0, 10 and 15%) to concrete on the uniaxial compressive strength and penetration rate of chlorine ion in concrete was investigated. According to the tests result performed by adding zeolite at the beginning concrete compressive strength decreases but after 90 days the compressive strength increases and is approximately equal to the strength of control samples. Zeolite also reduces the penetration rate of chlorine ions into concrete by 30% on average (compared to the control sample). Finally, it can be concluded that using 10% zeolite improves the concrete properties.