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    • 13. 发明专利
    • Cement composition for high strength concrete and high strength concrete composition
    • 高强度混凝土和高强度混凝土组合物的水泥组合物
    • JP2008174414A
    • 2008-07-31
    • JP2007008962
    • 2007-01-18
    • Ube Ind Ltd宇部興産株式会社
    • ITO TAKAYASUYUGE SACHIODOI TAKAYASUYAMAMOTO YASUHIDE
    • C04B7/02C04B14/28C04B28/02
    • C04B28/025Y02P40/148C04B14/02C04B2103/32
    • PROBLEM TO BE SOLVED: To provide a cement composition for high strength concrete which has high flowability and improves the compressive strength after 28 day material age without damaging the compressive strength in 7 day material age and a high strength concrete composition. SOLUTION: The cement composition for high strength concrete is a high belite type cement composition containing C 2 S of 30-60 mass% by the Bogue's equation, of which the total amount of free lime is 0.70 mass% or less, the amount of chloride ion is 0.013 mass% or less, the amount of belite α' phase is 3.0 mass% or more, and the amount of water-soluble alkalis is 0.30 mass% or less. The high strength concrete composition contains the cement composition, coarse and fine aggregate containing limestone, a high-range AE water reducing agent, and water. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了提供具有高流动性的高强度混凝土的水泥组合物,并且在28天材料年龄后提高抗压强度,而不损害7天材料年龄和高强度混凝土组合物的抗压强度。 解决方案:用于高强度混凝土的水泥组合物是通过Bogue方程式含有30-60质量%的C 2 S的高贝利特型水泥组合物,其中游离石灰的总量为 0.70质量%以下,氯离子的量为0.013质量%以下,贝氏体α'相的量为3.0质量%以上,水溶性碱的含量为0.30质量%以下。 高强度混凝土组合物含有水泥组合物,含有石灰石的粗骨料和细骨料,高效AE减水剂和水。 版权所有(C)2008,JPO&INPIT