... (no crack, peeling and spalling)-2030,50Alkali resistance (no crack, peeling and spalling)Soaked in ... sodium hydroxide 500High temperature resistance (no crack, peeling and spalling)Boiled in ... than 20 minutes.3. Strong performance in sulfate resistance and seawater corrosion prevention, good durability, anti- ... after unpacking... High-efficiency Permeability-reducing Agent