Analysis of the characteristics of the development of concrete special coatings

    In recent years, under the correct guidance of the national policy, China's heavy-duty coatings annual growth rate of more than 8% of the forward, with other heavy-duty coatings, concrete coatings production was also greater than 8% growth development. According to incomplete statistics, the 2011 National Concrete coating of 260,000 tons, accounting for 17% of the heavy-duty coatings, in which the bridge concrete coatings increase in the number of fastest, the highest share, accounting for about 28% of the total amount of concrete.

    In recent years, domestic Institute of colleges and universities to strengthen basic research of concrete anti-corrosion technology, research and development of high-performance anti-corrosion coating of paint plant, the durability of concrete structures designed to form a series of technical route.

    According to the characteristics of concrete structures, concrete coatings must have the technical characteristics: strong alkali, the pH range between 8 to 13, having a certain permeability: Coating Flexibility to adapt to the characteristics of thermal expansion and contraction of the concrete, and good ductility: the adhesion of the coating and the concrete meet the specified requirements; construction performance coatings, airless spray once a higher film thickness can be obtained; decorative coating performance. Concrete anti-corrosion coatings in China is broadly divided into three types of silane impregnating agents, reinforced concrete supporting anti-corrosion coatings and polyurea.

    In the next two to three years the rate of development of the concrete coating will exceed the rate of development of the heavy-duty coatings, can reach 10% or more.

                                                                                By Sabrina