85% Undensified Microsilica (Silica Fume) 85U
85% Undensified Silica Fume is a high-quality, unprocessed microsilica containing more than 85.0% silica content. With a bulk density ranging from 250-350 kg/m3 and a specific surface area of 15-30 m2/g, it is an exceptional supplementary cementitious material with numerous advantages.
HSA Microsilica 85U offers several advantages in construction applications, including enhanced strength, improved durability, better workability, reduced thermal conductivity, environmentally friendly characteristics, and cost-effectiveness. It is widely utilized in insulation materials, large-scale concrete projects, mortar, pipe piles, and various other applications across the construction industry.
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Parameters
Property | Value |
---|---|
SiO2 (Silicon Dioxide, Amorphous) | 85% min |
SO3 | 1.0% max |
Cl | 0.3% max, typical 0.033% |
Free CaO | 1.0% max, typical 0.92% |
pH | > 6 |
Moisture | 3% max |
LOI (Loss on Ignition) | 6% max, typical 3.23% |
Specific surface (BET) | 18 m2/gram min |
Bulk Density | 250-350 kg/m3 |
PAI (Pozzolanic Activity Index) – 7 days accelerated curing | 105% min |
Retained on 45 micron sieve | 10% max, typical 1.08% |
Fluidity | > 18 cm |
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Founded in 2001, HSA is a leading provider of Silica Fume and Abrasives in China, and also the premium source of high-performance Products for concrete and abrasives industries.