Xypex Admix, both the standard version and the NF versions do nothing to the plastic properties of concrete other than the delay set that they are designed to give, for those formulations designed to do so. Xypex Admixture improves most of the engineering properties of concrete although the primary reason for the use of Xypex in concrete is to:
1) eliminate any weeping or dampness in concrete that is holding back water
2) heal any cracks up to about 1/64" against water flow and
3) improve the chemical and corrosion resistance of concrete.
Posted on 26 Nov 2012