Crushed sand, also known as crushed rock sand, is a manufactured material that serves as a substitute for natural river sand. It is widely used, particularly in the construction industry.
Based on the provided information, crushed sand is:
- Manufactured: It is produced by crushing quarried stone.
- Sized: The crushing process reduces the stone to a size that will completely pass through a 4.75 mm sieve.
- Alternative: It has emerged as a viable alternative to Natural River sand.
- Usage: It is now being used commonly throughout the world as fine aggregate in concrete.
Origin and Production
Unlike natural sand, which is eroded and deposited by rivers over time, crushed sand is created through a controlled industrial process. Quarried stone, such as granite or basalt, is mechanically crushed in specialized plants. The material is then screened to ensure the particles meet the required size specifications, primarily passing through the 4.75 mm sieve. This process allows for consistent grading and quality control.
Applications
The primary application highlighted is its use as fine aggregate in concrete. Fine aggregate is an essential component of concrete mixes, providing bulk and stability. As supplies of natural river sand become depleted or extraction becomes environmentally sensitive, crushed sand offers a sustainable and readily available alternative.
It is important to note that while the term "crushed sand" is often used broadly, its specific properties can vary depending on the type of rock used and the crushing process. However, its fundamental characteristic remains its origin from crushed rock and its fine particulate size suitable for construction applications like concrete.
