Effect of blended cements with natural zeolite and industrial by-products on rebar corrosion and high temperature resistance of concrete

In this study, influence of blended cements produced with different types of pozzolans on rebar corrosion and high temperature resistance of concrete was investigated. For this reason, natural zeolite (Z), fly ash (FA), and ground granulated blast furnace slag (GBFS) were used in different types of blended cement production. Accelerated rebar corrosion tests and high temperature experiments were carried out to obtain the durability performance of these cements. According to the variation of corrosion current, FA and GBFS was observed to inhibit positively. However, the results of microstructure analysis on concrete specimens showed that the performance of FA is better than other additives used in the study under the effect of high temperature.