Pulverulent anti-corrosion agent, preferably for reinforcement steel in concrete

摘要

The invention relates to a pulverulent anti-corrosion agent for the protection of reinforcement steel in construction materials and construction elements comprising silicate concrete which do not ensure long-term passivation of the reinforcement steel. An anti-corrosion agent is to be developed whose utility is not reduced during processing and the hydrothermal hardening of the concrete. People involved in the process of production and processing should not be exposed to any health risk. On the basis of a mixture of bitumen having a softening point of 70 DEG C, of high polymers and of a steel passivating agent, the mixture according to the invention comprises 42-62% by mass of bitumen 36-55% by mass of calcium hydroxide 2-7% by mass of ethylene-vinyl acetate copolymer or 4-10% by mass of ethylene-vinyl acetate-vinyl chloride graft copolymer 0-6% by mass of polyvinyl chloride. b