Abstract
AbstractIn this work, the preparation of calcium–silicate‐based composites consisting of natural waste from calcium source as eggshell and silica gel from a desiccator as a silicon source both presenting alternative materials for cheap preparation of eco‐friendly calcium–silicate bioceramics has been investigated. The effect of the CaO/SiO2 ratio on microstructural properties has also been studied. The pseudowollastonite formation has been observed in the case of 40 wt.% CaO and 60 wt.% SiO2 with lowest porosity and highest density 2.6 g/cm3. In the case of 50 wt.% CaO and 50 wt.% SiO2, the phase transformation from pseudowollastonite to wollastonite was observed. Increasing the calcium content caused higher apparent porosity with 19%. It was shown that the development of novel ceramics from reused waste, eggshell, or silica can be an optimal solution for the low‐cost preparation of calcium silicates with potential applications in medicine or cement, food industry.
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