Investigation on capability of using natural zeolite as VMA in SCM

In this study, by the aid of a new method for mix design, the direct effect of zeolite powders with different replacement ratios (including 0%, 5%, 10%, 15%, 20% and 30%) on rheological properties of SCM is investigated, and all other influential parameters on rheology have been controlled or omitted. Accordingly, in order to check the capability of mortars to be used as SCM, mini V-funnel test and mini slump flow test were conducted. Then, for mixtures with acceptable rheological properties, mechanical properties of specimens were studied in terms of standard compressive and flexural strength. The results showed that zeolite powder can act as an appropriate VMA while using ratios below 20% replacement. Also, it has been concluded that 15% replacement ratio not only does possess the optimum compressive strength, but also acts as the best content for adjusting the rheological properties as VMA.

کلیدواژه ها:

Natural zeolite ، SCM ، VMA ، Flowability ، Viscosity