The difference between coarse sand, medium coarse sand and fine sand

Where are fine sand, medium sand, and coarse sand used, such as what sand is used for mortar for building walls? What sand is used for interior wall painting?
Fine sand is mainly used for masonry mortar and plastering mortar; medium sand is mainly used for concrete; coarse sand is used for filling; wall mortar and fine sand for interior wall painting. The ground is mainly used in combination with medium sand and coarse sand Among them, the difference between medium sand and fine sand is not very big. It can be used in many places, and in many cases coarse sand is used instead of other sand.

What is the difference between coarse sand, medium coarse sand and fine sand
Literally, the main reason is that their particle sizes are different; from the perspective of building materials theory, they have different fineness modulus and different gradations. This gradation refers to the mixing ratio of sands of different particle sizes. From a perspective, coarse sand has the highest strength, followed by medium coarse sand, and fine sand has the lowest strength. Coarse sand is mostly used for reinforced concrete structures, medium coarse sand is used for wall masonry projects, and fine sand is used for temporary projects.

What is the purpose of indoor decoration sand: coarse sand, medium sand and fine sand?
Coarse sand is suitable for large-volume concrete, medium sand is used for touching ash or paving bricks, and fine sand is used for slip joints. As long as there is no mud, it is good sand. In fact, the difference between medium sand and fine sand is not very large and can be used in many places Comparing wall and plastering mortar can be used, but coarse sand is generally relatively cheaper. Many times some people use coarse sand instead of other sand to save costs. However, coarse sand means that the mud content is heavier. In the case of mortar floors, fine sand is rarely used alone in buildings, but it is used in mortar.Other times, there are more medium and coarse sands, mainly because of crack resistance.

In construction sand, what construction technology and process are coarse sand, medium sand, fine sand, and ultra-fine sand used for?
Coarse sand and medium and fine sand can be used for mixing concrete, and ultra-fine sand can be used for plastering mortar

How to distinguish coarse sand, medium sand, and fine sand?
It is distinguished by the fineness modulus, and the difference between ultra-fine sand and medium sand can be distinguished by the naked eye. Natural sand is divided into river sand, sea sand and mountain sand. The thickness of sand is divided into 4 levels according to the fineness modulus.
1.Coarse sand: the fineness modulus is 3.7-3.1, and the average particle size is 0.5mm or more.
2. Medium sand: the fineness modulus is 3.0-2.3, and the average particle size is 0.5-0.35mm.
3.Fine sand: the fineness modulus is 2.2-1.6, and the average particle size is 0.35-0.25mm.
4. Extra-fine sand: The fineness modulus is 1.5 to 0.7, and the average particle size is below 0.25mm. The larger the fineness modulus, the coarser the sand.

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