Natural sand
Natural Sand is one of the coarse types of materials that are obtained from the depths of wells and are usually available in red and orange colors. In general, it can be stated that the appearance of these sands has a sharp and angular fracture and is used in concreting.

River sand
River sands are obtained from rivers and have a much higher quality than sands obtained from pits. Their color is usually white to gray. Their appearance is completely round and without angles; Therefore, according to the mentioned features, this type of sand is used in plastering.

Artificial sand
In general, it can be acknowledged that synthetic sands are usually produced by crushing Granite or basalt Stones during three crushing stages and are a suitable alternative to river sands. These sands are produced in sand factories and by various Stone crushers. Also, from another point of view, artificial sand can be examined in smaller sections, which includes this type of material

• Natural sand: Natural sand is extracted from the river bed, alluviums and cones and after being washed, it is used in a variety of ways. Their shape is round and polished.
• Broken sand: These sands are coarse and usually broken. Available in corner form.
• Washed sand: There are large amounts of soil and organic materials among the sands, which affect the efficiency of the sand, for this reason, it is washed and separates the sand from those materials.
• Light-grained sand: Sands such as pumice, tuff, clay, shale, diatomite and volcanic ash, which have low density, are called light-grained sand.
• Ordinary sand: The sand that exists around us naturally is called ordinary sand. This type of sand can be used to make concrete with normal weight.
• Heavy grain sand: grains such as serpentine, magnetite, ilmenite, geotite, limonite and barite are called heavy grain sands, which can be used to make heavy weight concrete.
• Natural sand: This type is naturally extracted from the sea and river bed.
• Washed sand: This type of sand is also called double salt, which is a mixture of sand and soil.
• Broken sand: this type has a sharp appearance and is obtained from the grinding of mineral stones.
• Round sand: As their name suggests, these sands have a round and spherical appearance. They are also artificial sand.
• Angled sand: This sand has high strength and the porosity between them is less than round sand.
• Semi-round sand: These grains do not have a completely round appearance, and some are round and some are angular.
• Mixed sand: this type of sand does not have a special shape.