**Acknowledgements**

We thank all staff of the research center in physicochemical analysis (CRAPC) of Tipaza, Algeria, for their kind cooperation and characterization (XRF, X-ray, SEM). We wish the best of luck to Prof. Mohammed Belbachir (Oran 1 University) and Prof. Mourad Megachou (University DjillaliLiabes of Sidi Bel Abbes) for their support in making the publication of this research possible.

*Structural and Chemical Analysis of New Cement Based on Eggshells and Sand from Dunes… DOI: http://dx.doi.org/10.5772/intechopen.98346*
