Applications of Polyaniline–Alkaline Copper Carbonate Composites for Anti-Bio-Attachment of Concrete in Marine Environments

This study proposed the use of polyaniline–alkaline copper carbonate composites as anti-corrosion and anti-biofouling concrete additives established a set high-dispersion preparation methods for this composite additive. The effects in were investigated marine environments via specimens, actual sea suspension experiments, mechanical property tests, biological attachment avoidance tests. experimental results showed that (1) yield chemical reactions leading to was above 96.46% with good output. hydrophilic. addition ethylene surfactant mixing into form enabled uniform dispersion composite. (2) In waters Zhoushan, China, bio-attachment mainly dominated by barnacles anemones. Polyaniline–alkaline had anti-bio-attachment properties could significantly reduce amount concrete. (3) When additive content less than 0.20% mass, it did not negatively affect specimens exerted effects. reduced strength loss increased service life ocean. To ensure best application effect compound concrete, recommended is 0.05–0.15% mass.