▎ 摘　　要

NOVELTY - Manufacturing additives comprises: (a) a producing formulation composed of Portland cement, hydrophobic compound and graphite separately, heating the mixture at 70-150° C, homogenized suitably in a crusher; (b) after the previously produced formulation, a second mixture is made while heating, at a temperature of 70-170° , where the formulation comprises Portland cement, AC mortar, calcium carbonate, pore blocker, hydrophobic compound and the previously produced formulation; and generating the final product. USE - The method is useful for manufacturing additives for concrete, which is used in several lines of civil construction e.g. construction of bridges, viaducts, tunnels, cisterns, floors, building foundations. ADVANTAGE - The method provides concrete with hydrophobic and waterproofing properties and improves mechanical properties and is exposed to an environment with high humidity and protection against it is required. DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of the equipment used in the final mixture for the production of the concrete additive. 1Feed screw 2Endless screw 3Heating mixer 5Silo 6Bagger