Most of the coarse aggregates have fine materials, such as Clay or dust from the Stone crushing process, with a rough texture. The presence of fine materials on the Sand reduces its efficiency. In order to produce quality and clean sand, it is washed through a careful process to remove the fine materials on the sand. The sand resulting from this process is called washed sand. Due to the smoother and cleaner surface, washed sands increase the adhesion in the Cement mixture, hence they improve the quality and are highly popular.

Sand has many uses in construction projects, including the following:

• Use in laying pipes
• In making concrete
• Use in the field of pavement surface coating
• Glass production
• Using them as Metal casting mold material
• Use as an abrasive material in sandblasting

The whole construction industry has no meaning without sand. You consider any kind of construction, these two materials are involved in it. Buying sand, in its various forms, has hundreds of purposes and applications in construction. Among these goals, we can mention the construction of roads, concrete and block construction, houses, etc.

Other widespread cases of using sand in civil engineering and construction are as follows;

• The first and most important is the production of concrete and concrete derivatives.
• A unique type of sand is used in making glass.
• Sand is used as a mold for metal casting.
• Granulation of sand on the floor of the building is used to prevent moisture.
• Another application of sand is in porcelain bricks, walls, etc.
• Other uses can be called mosaic and tile installation.
• Sand is used for the foundation of buildings that are more than two stories high.