Acknowledgement
This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (No. 2015R1A5A1037548).
The eggshell is a type of bio-waste which is considered hazardous to the environment. In this research, the waste eggshell is utilized as a potential filler in cementitious material. This study has measured by zeta potential to analyze the interaction between the surface of the filler and the calcium ion in the solution. Meanwhile, the effect of eggshell powder on cement hydration process has been determined by isothermal calorimeter. The results show that the surface of eggshell powder have a strong adsorption of Ca2+, and addition of the eggshell powder provides a heterogeneous nucleation site for cement, which promotes the growth of hydration products.
This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (No. 2015R1A5A1037548).