Based on analytical tests using sand test sieves, sand is typically classified into different categories according to particle size. These classifications, defined by the sieve sizes used for separation, can be considered as different types of sand based on their size characteristics determined by sieving.
Understanding Sand Classification by Sieving
Sand test sieves are fundamental tools in determining the particle size distribution of sand samples. By passing a sand sample through a stack of sieves with progressively smaller mesh openings, the particles are separated into different size fractions. The "types" of sand sieve, in this context, refer to the specific sieve sizes used to define boundaries between different sand classifications.
Key Sand Classifications and Sieve Data
The reference provides the following classifications, particle size ranges, and corresponding standard sieve numbers used in analytical testing:
| Sand Separate | Diameter Range (mm) | Standard Sieve No. |
|---|---|---|
| Gravel | 2.0 and larger | 10 |
| Very Coarse Sand | 2.0 - 1.0 | 18 |
| Coarse Sand | 1.0 - 0.5 | 35 |
| Medium Sand | 0.5 - 0.25 | 60 |
Note: The reference only provides data up to Medium Sand. Finer sand classifications (Fine, Very Fine) would require smaller sieve sizes.
In essence, the different types of sand sieve mentioned in the context of classification refer to the specific sieves (identified by standard sieve number and corresponding mesh size) used to separate samples into categories like Gravel, Very Coarse Sand, Coarse Sand, and Medium Sand based on their particle diameters. Each classification represents sand particles that pass through one sieve size but are retained on a smaller sieve size.
