A new approach toward investigating the mechanical properties of zeolite blended cement pastes

Despite of positive pozzolanic effects and economical aspects of zeolite powders, these particles mostly possess porous surface with high specific area and cause some deficiency in rheological properties. In this study, by the aid of solid concentration test and consistency test, the rheological properties of pastes containing different amount of zeolite as cement replacement (including 0%, 5%, 10%, 15%, 20% and 30%) were investigated. After achieving similar workability and omitting the negative rheological effects of zeolite powder, different mixtures were fabricated. Then, mechanical properties of specimens were studied in terms of standard compressive and flexural strength. The results showed that increase in zeolite content gradually decreases the mechanical properties of specimens, and by approaching to the optimum replacement ratio the mechanical properties suddenly increase. Afterward, the mechanical properties face a steep descending trend with ascending contents of zeolite powders.

کلیدواژه ها:

Zeolite powder ، Solid Concentration ، Consistency ، Optimum strength