Blaine Air Permeability Apparatus for Cement Fineness Testing

Blaine Air Permeability Apparatus — Cement Fineness Testing

The Blaine Air Permeability Apparatus is used to determine the specific surface area (fineness) of cement, fly ash, GGBS, and other fine powders by measuring the rate of air flow through a compacted bed of the material as per IS 4031 Part 2, IS 1489, and ASTM C204. Cement fineness directly influences hydration rate, early strength gain, setting time, and workability — making it a critical QC parameter at cement plants and concrete labs.

JS Civil Lab Solutions supplies manual and semi-automatic Blaine apparatus for cement plant QC labs, ready-mix laboratories, and NABL-accredited testing facilities.

Specifications

• Method: Air permeability (Blaine method)
• Cell: Standard 1 cm³ permeability cell, stainless steel
• Manometer: U-tube oil manometer with etched timing marks
• Piston: Calibrated push-fit piston for bed preparation
• Timer: Manual stopwatch or integrated digital timer
• Calibration: Using standard reference cement (SRC) of known specific surface
• Output: Specific surface in cm²/g or m²/kg
• Compliance: IS 4031 Part 2, IS 1489, ASTM C204, BS EN 196-6

Typical Values

OPC (IS 269): Minimum 225 m²/kg. PPC (IS 1489): Minimum 300 m²/kg. GGBS (IS 12089): Minimum 400 m²/kg. Higher fineness generally means faster strength gain but increased water demand and potential for cracking in mass concrete.

Order

Contact JS Civil Lab Solutions at +91 93596 24761 for pricing. Standard reference cement (SRC) and manometer oil supplied as accessories.