Study on mechanical properties of mortar blocks using marble dust waste as cement or fine aggregate replacement materials
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2017-11Autor
Hojda, Gabriel Georgian
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[EN[In the recent years, the use of the binding materials and the substitute
materials of different types in addition to cement or to fine aggregate has become
very wide in the production of mortars, such as blending of portland cement with
marble dust, so it is necessary to investigate the influence of the binder and the
substitution material on the mortar properties. In order to assess the performance
of this type of mortar, it is important to understand the changes in the mortar
properties. The main objective of the research work is to investigate the possibility
of utilizing marble dust as a partial replacement of cement or fine aggregate.
Several mortar pastes were prepared using marble dust. In order to evaluate the
effects of the marble dust on the mechanical behavior, many different mortar
mixtures were tested. Mixtures were evaluated based upon cement or sand
substitution by the marble powder. The percentage of marble dust that replace the
cement or the fine aggregates in this research was 10%, 20% and 30% by volume.
Compressive and bending test were performed in order to find the perfect
combination of marble dust waste as a replacement material. The main conclusion
of the project is that in terms of compressive and tensile strength it can be said
with certainty that the optimum proportion when using dry marble dust is S30-D
and when using pre-wet marble dust is S10-D.