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项目
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标准技术指标
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普通型
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高强型
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早强型
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粒径
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4.75mm方孔筛筛余／%
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≦2.0
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≦2.0
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≦2.0
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≦2.0
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凝结时间
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初凝／min
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≧120
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≧120
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≧120
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≧60
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泌水率/ %
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≦1.0
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≦1.0
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≦1.0
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≦1.0
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流动度/mm
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初始流动度
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≧264
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≧280
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≧280
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≧280
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30min保留值
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≧240
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≧260
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≧260
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≧260
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抗压强度/MPa
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6h
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—
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—
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—
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≧25.0
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1d
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≧22.0
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≧25.0
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≧40.0
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≧45.0
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3d
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≧40.0
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≧45.0
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≧60.0
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≧650
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28d
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≧70.0
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≧75.0
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≧80.0
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≧80.0
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竖向膨胀率/ %
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1d
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≧0.020
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≧0.020
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≧0.020
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≧0.020
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钢筋握裹强度(圆钢)／MPa
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28d
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≧4.0
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≧6.0
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≧6.0
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≧6.0
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对钢筋锈蚀作用
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应说明对钢筋有无锈蚀作用
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