Water-borne polyurethane-modified cement composition

摘要

A water-borne polyurethane modified cement composition is prepared from a dispersion of a water-dispersible polyurethane, a cross-linking agent, which is a polycarbodimide having N=C=N functional groups, and cement. Optionally, a water-reducing agent, and a surfactant can be added. The modified cement composition has higher tensile strength, elongation, and water resistance.