Sand Size in mm: A Comprehensive Guide
When it comes to sand, its size is a crucial factor that determines its properties and applications. Measured in millimeters, the size of sand can vary significantly, affecting everything from construction to industrial processes. In this article, we will delve into the different sand sizes in mm, their characteristics, and their uses.
Understanding Sand Size in mm
Sand size is typically measured in millimeters, with the most common sizes ranging from 0.0625 mm to 4.75 mm. These sizes are categorized into different grades, each with its unique properties and applications.
| Sand Size (mm) | Grade | Description |
|---|---|---|
| 0.0625 – 0.125 | 100 | Very fine sand, used in foundry and glass industries. |
| 0.125 – 0.25 | 200 | Fine sand, suitable for foundry, glass, and construction industries. |
| 0.25 – 0.5 | 300 | Medium sand, commonly used in construction and foundry. |
| 0.5 – 1 | 400 | Coarse sand, ideal for concrete, asphalt, and road construction. |
| 1 – 2 | 500 | Very coarse sand, used in concrete, asphalt, and road construction. |
| 2 – 4.75 | 600 | Extra coarse sand, suitable for concrete, asphalt, and road construction. |
As you can see from the table, sand sizes are categorized into grades based on their particle size. The smaller the grade number, the finer the sand. This classification helps in determining the appropriate sand size for various applications.
Characteristics of Different Sand Sizes
The characteristics of sand sizes in mm can vary significantly, affecting their performance in different applications. Here are some key characteristics of different sand sizes:
- Very Fine Sand (0.0625 – 0.125 mm): This sand is highly permeable and has a low specific gravity. It is commonly used in foundry and glass industries due to its fine texture and ability to fill small gaps.
- Fine Sand (0.125 – 0.25 mm): Fine sand has good workability and is suitable for foundry, glass, and construction industries. It is also used in the production of mortar and concrete.
- Medium Sand (0.25 – 0.5 mm): Medium sand has good workability and is commonly used in construction and foundry. It is also suitable for asphalt and road construction.
- Coarse Sand (0.5 – 1 mm): Coarse sand has good workability and is ideal for concrete, asphalt, and road construction. It provides better stability and strength to the mixture.
- Very Coarse Sand (1 – 2 mm): Very coarse sand is used in concrete, asphalt, and road construction. It provides excellent stability and strength to the mixture.
- Extra Coarse Sand (2 – 4.75 mm): Extra coarse sand is used in concrete, asphalt, and road construction. It provides excellent stability and strength to the mixture, making it suitable for heavy-duty applications.
Applications of Sand Sizes in mm
Sand sizes in mm have a wide range of applications across various industries. Here are some common applications:
- Construction: Sand sizes are used in concrete, asphalt, and road construction. They provide stability, strength, and workability to the mixture.
- Foundry: Fine and very fine sand sizes are used in the foundry industry to produce molds and cores for metal casting.
