| abstract |
METHOD FOR DELAYING THE HARDENING OF CEMENT AND CONCRETE MORTAR SURFACES. A representative method for delaying the surface hardening of a cement or concrete mortar, comprising applying a coating composition to the surface of a cement or concrete mortar, or to the inner surface of a mold for molding the cement or concrete mortar. which melts on heating which is heated to assume a fluid or sprayable form, and allows the heating melt coating to cool to room temperature whereby the composition forms a solidified membrane, and then removes the membrane . Preferably, the heating melt coating composition contains at least one operative agent to delay the hardening of the cement or concrete mortar, and optionally finely divided particulate materials, light reflective pigments, or mixtures thereof. |