River sand is an ideal material used by the construction industry for concrete production. Its qualities and characteristics is said to be better compared to its alternatives such as crushed stones when working with concrete and mortar.
There are basically five sand and gravel options for construction and river sand is said to be the better choice, generally speaking that is. These are:
1. Coarse Crushed Limestone Gravel – These are the largest type of construction gravel and they have the ability to support heavy loads and promote necessary drainage.
2. Pit or Coarse Sand – They are thick, hard, and often have sharp particles. Extracted from the earth’s natural deposits, they make a strong and almost smooth material for mortar.
3. Crushed Clean Stone – This type of aggregate is washed to prevent excessive dust problems and comes in a number of sizes. They are often used as a drainage option in septic drain fields, retaining wall drains, and drains located on the edges of roads.
4. Fine Limestone Gravel – They are coarser than sand, yet are small enough to create solid, compacted surfaces. They provide fantastic support for patios, indoor flooring featuring pavers, and covered enclosures, such as sunrooms.
5. River Sand – They come from river banks and beds. This construction sand comes in both coarse and fine options. The former is preferred for construction use because finer sand contains too much dust. River sand offers a number of applications, including the mixing of plaster because particles are rounder than artificial sand and create a much smoother finish.
Specifications of River Sand:
- Concrete Strength: Lesser concrete than any other sand
- Marine Products: 1 – 2%
- Moisture Content: It traps moisture between the particles to provide excellent texture for concrete purposes.
- Over Sized Materials: 1 – 6%
- Particle size: 75 micron up to 3%
- Shape: Smooth texture with better shape
- Silt Content: Minimum silt content is 3%
Uses of River Sand:
1) It is used in the development of RCC, cement-sand mortar and concrete in construction industry
2) It is used in brick/ block and plastering work