Ground Granulated Blast Furnace Slag Powder (GGBFS)
Standards Referenced: GB/T 18046-2017, ASTM C989, EN 15167
1. Physical & Chemical Properties
Item | Technical Requirement (GB/T 18046-2017) | Test Result | Unit |
Specific Surface Area | 400 – 500 | 415 | m²/kg |
Flowability | > 95 | 101 | % |
Loss on Ignition (LOI) | ≤ 1.0 | 0.37 | % |
Density | ≥ 2.8 | 2.9 | g/cm³ |
Total Alkali Content (as Na₂O eq.) | / | 0.6 | % |
Moisture Content | ≤ 1.0 | 0.43 | % |
Sulfur Trioxide (SO₃) Content | ≤ 4.0 | 0.78 | % |
Initial Setting Time Ratio | ≤ 200 | 175 | % |
Chloride Ion Content | ≤ 0.06 | 0.01 | % |
Activity Index (7 days) | ≥ 70 | 87 | % |
Activity Index (28 days) | ≥ 95 | 111 | % |
2. Compliance with International Standards
2.1 European Standard (EN 15167)
All test results meet the requirements of EN 15167, including specific surface area, LOI, SO₃, moisture content, and 28-day activity index.
2.2 American Standard (ASTM C989)
All test results meet the requirements of ASTM C989 Grade 100, including specific surface area, LOI, SO₃, moisture content, and 28-day activity index.
3. Product Performance & Application
• Strength Contribution: 7-day activity index 87% and 28-day activity index 111% indicate excellent cementitious reactivity, effectively improving concrete strength and durability.
• Workability: Flowability of 101% ensures good workability in concrete mixes, suitable for high-performance and ready-mix concrete applications.
• Durability Enhancement: Low chloride ion (0.01%) and SO₃ (0.78%) content reduce risk of alkali-aggregate reaction and sulfate attack, extending service life of concrete structures.
4. Storage & Handling
• Storage: Store in dry, sealed silos or bags to prevent moisture absorption; avoid exposure to rain or direct sunlight.
• Handling: Use dust extraction systems and personal protective equipment (respirators, gloves) to minimize dust inhalation and skin contact.
• Transport: Comply with bulk or bagged transport regulations for cementitious materials; prevent breakage and moisture ingress during transit.
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