COMPOSITION OF COMPOUND AND CEMENT FOR MARINE CONCRETE

摘要

PURPOSE: An admixture for a maritime concrete and a cement composite including thereof are provided to improve reinforcing rod corrosion resistance by preventing an activation of infiltrated chloride ion in the concrete. CONSTITUTION: An admixture for a maritime concrete contains 55~90 parts by weight of blast furnace slag fine powder with a first grading, 8~35 parts by weight of blast furnace slag fine powder with a second grading, and 2~10 parts by weight of salt damage preventing agent. The fineness of the first grading is 6,000~8,000 square centimeters per gram. The fineness of the second grading is 3,000~4,000 square centimeters per gram. The salt damage preventing agent is a nitroxy radical crystalline compound. A maritime cement composite contains 30~80 parts by weight of cement, 10~40 parts by weight of admixture from above, and 10~30 parts by weight of fly ash.