Defining River Sand
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.
More about the River Sand
There has been a report comparing the materialistic differences between sea and river sand. According to the report, uploaded by Atul Verma from the National Dong Hwa University in Taiwan, it has been known that sea sand is avoided in construction industry due to many reasons.
“When sea sand is mixed with cement in place of normal river sand to make concrete for buildings, the high content of chloride in sea sand leads to structural integrity problems. This composition absorbs humidity with causes erosion and rusting in the steel rods used in reinforced concrete. The building structural integrity is therefore damaged.”
In addition, the average grain size of sea sand is larger compared to river sand making river sand better in term of smoothness and ability for a much tighter build.