Super-plasticizer
El-Kady, H., M. I. Serag, and M. S. El-Feky,
"Effect of Nano Silica De-agglomeration, and Methods of Adding Super-plasticizer on the Compressive Strength, and Workability of Nano Silica Concrete",
Civil and Environmental Research, vol. 3, issue 2, pp. 21-34, 2013.