Research on performance of concrete anti-corrosion agent based on coated barium salt
Three kinds of barium salts(barium hydroxide,barium carbonate,barium nitrate)are coated with alkaline nano-silica dispersion to prepare brine corrosion inhibitors.The corrosion resistance coefficient,28-day compressive strength ratio and chloride ion diffusion coefficient of concrete samples mixed with coated barium salt brine corrosion inhibitor are studied,comparing with those mixed with uncoated barium salt brine corrosion inhibitor.The results show that the coated barium salt brine corrosion inhibitor can significantly improve the corrosion resistance of concrete,and the 90-day corrosion resistance coefficient is 1.189,28-day compressive strength ratio is 111.11%,and 28-day chloride ion diffusion coefficient is only 2.50×10-12m2/s.
brine corrosion inhibitorbarium saltcorrosion resistance coefficientchloride ion diffusion coefficient