This standard specifies a method for determining the specific surface area of cement and Miscellaneous powdery materials using a Burch breathalyzer. It is suitable for powdery materials with a specific surface area in the range of 2000 cm ²/g to 6000 cm ²/g, but not for porous materials and ultra-fine powders. The specific surface area is determined by measuring the change in resistance of air as it passes through the cement layer. This method ensures accurate measurement of cement fineness based on the effect of particle size on airflow velocity. This method is important for controlling the performance and mass of cement.
| Status | Active |
|---|---|
| CCS | Q11 | ICS | 91.100.10 |
| Release Date | 2008-01-09 00:00:00 | Implementation Date | 2008-08-01 00:00:00 |