Abstract
By mixing several binder materials and additions with different degrees of fineness, the packing density of the final product may be improved. In this work, ultrafine cement and silica fume mixes were studied to optimize the properties of cement-based materials. This research was performed in mortars made of two types of cement (ultrafine Portland cement and common Portland cement) and two types of silica fume with different particle-size distributions. Two Portland cement replacement ratios of 4% and 10% of silica fume were selected and added by means of a mechanical blending method. The results revealed that the effect of the finer silica fume mixed with the coarse cement enhances the mechanical properties and pore structure refinement at a later age. This improvement is somewhat lower in the case of ultrafine cement with silica fume.
Highlights
Portland cement-based materials, which have good mechanical and durable performances, form the basis of many civil structures and buildings located around the world
Due to the results found in binder systems that contain ultrafine cement, new research that replaces normal grain sized Portland cement with ultrafine cement and silica fume is proposed
For silica fume supplied by FerroAtlantica (SFF) a trimodal particle-size distribution was found with three peaks at 60 μm, 10 μm and 0.5 μm
Summary
Portland cement-based materials, which have good mechanical and durable performances, form the basis of many civil structures and buildings located around the world. Given that the production of Portland cement is an energy-intensive process. The carbon dioxide emission footprint produced by the cement industry is significant. For such a reason, it must be minimized. This has led to alternatives being examined that address a problem that persists [1]. Such research involves significant scientific and engineering challenges. This has led to alternatives being examined that address a problem that’ persists
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